Ferrous Sulfate

Known since ancient times as copperas and as green vitriol, the blue-green heptahydrate is the most common form of this material.

Boost your business with
our high quality services

+86-15955527232

feronia@wit-stone.com

www.chinachemcore.com

Iron(II) sulfate

Ferrous sulfate denotes a range of salts with the formula Fe SO4·xH2O. These compounds exist most commonly as the heptahydrate (x = 7) but several values for x are known. The hydrated form is used medically to treat or prevent iron deficiency, and also for industrial applications. All the iron(II) sulfates dissolve in water to give the same aquo complex [Fe(H2O)6]2+, which has octahedral molecular geometry and is paramagnetic. The name copperas dates from times when the copper(II) sulfate was known as blue copperas, and perhaps in analogy, iron(II) and zinc sulfate were known respectively as green and white copperas.

Its crystalline hydrate is heptahydrate at room temperature, commonly known as “green alum”, a light green crystal that weathered in dry air and oxidized to brown basic iron sulfate on the surface in humid air. It becomes a tetrahydrate at 56.6 ℃ and a monohydrate at 65 ℃. Ferrous sulfate is soluble in water and almost insoluble in ethanol. Its aqueous solution oxidizes slowly in air when cold, and oxidizes quickly when hot. Adding alkali or exposure to light can accelerate its oxidation. Relative density (d15) 1.897. It is stimulating. Ferrous sulfate can be used as a chromatographic reagent and for the determination of platinum, selenium, nitrite, and nitrate in drop analysis. Ferrous sulfate can also be used as a reducing agent, manufacturing ferrite, water purification, polymerization catalyst, photographic plate making, etc.

Hydrates

Iron(II) sulfate can be found in various states of hydration, and several of these forms exist in nature or were created synthetically.

FeSO4·H2O (mineral: szomolnokite,relatively rare, monoclinic)
FeSO4·H2O (synthetic compound stable at pressures exceeding 6.2 GPa, triclinic)
FeSO4·4H2O (mineral: rozenite,white, relatively common, may be dehydration product of melanterite, monoclinic)
FeSO4·5H2O (mineral: siderotil,relatively rare, triclinic)
FeSO4·6H2O (mineral: ferrohexahydrite,very rare, monoclinic)
FeSO4·7H2O (mineral: melanterite,blue-green, relatively common, monoclinic)

Anhydrous iron(II) sulfate
The tetrahydrate is stabilized when the temperature of aqueous solutions reaches 56.6 °C (133.9 °F). At 64.8 °C (148.6 °F) these solutions form both the tetrahydrate and monohydrate.

Mineral forms are found in oxidation zones of iron-bearing ore beds, e.g. pyrite, marcasite, chalcopyrite, etc. They are also found in related environments, like coal fire sites. Many rapidly dehydrate and sometimes oxidize. Numerous other, more complex (either basic, hydrated, and/or containing additional cations) Fe(II)-bearing sulfates exist in such environments, with copiapite being a common example.

Ferrous Sulfate Tetrahydrate

  • Industrial wastewater treatment
  • Make iron salts
  • Anti anemia drug
  • Feed additive

Ferrous sulfate tetrahydrate is different from ferrous sulfate monohydrate and ferrous sulfate heptahydrate. It is a by-product produced in the process of producing a rare metal product by sulfuric acid method. The product appearance is light green or yellowish green crystalline solid. Adding the agreed amount can adjust the PH value of alkaline water, organically combine with suspended solids in water, and accelerate sedimentation.

MORE PRODUCTS
Item Content
FeSO4·4H2O/% ≥ 88.0
Fe2+/% ≥ 22.0
As/（mg/kg） ≤ 2
Pb/（mg/kg） ≤ 15
Cd/（mg/kg） ≤ 3
Insoluble matter % ≤ 1.0

application

Industrially, ferrous sulfate is mainly used as a precursor to other iron compounds. It is a reducing agent, and as such is useful for the reduction of chromate in cement to less toxic Cr(III) compounds. Historically ferrous sulfate was used in the textile industry for centuries as a dye fixative. It is used historically to blacken leather and as a constituent of iron gall ink.The preparation of sulfuric acid (‘oil of vitriol’) by the distillation of green vitriol (iron(II) sulfate) has been known for at least 700 years.

Ferrous Sulfate Heptahydrate is an extremely efficient chemical compound and therefore, has many industrial applications. Its main applications and strengths are:

  • Ferrous Sulfate Heptahydrate is most popularly used in mining as a fluid property modulator.
  • It is used for the extraction of oil and gas.
  • It is used in the manufacturing of various medicinal drugs.
  • It is used in general adhesives.
  • In the agricultural industry it is used for lowering the pH of highly alkaline soil.
  • It is used as a soil amendment so that plants have access to the nutrients of the soil.
  • It is used in horticulture for treating the issue of iron chlorosis.
  • It has long lasting effects.
  • It is used in fertilisers, pesticides, and herbicides.
  • If mixed with compost and dung in the soil, it can create a store which can last for a long period of time.
  • It is also used as a lawn conditioner and moss killer.
  • It is used to stain concrete, sandstones, and limestones.
  • It is used as a pigment by woodworkers to colour maple wood.
  • It is used as a colorant for drugs, food, and inks.
  • It is used in the treatment of iron deficiency anaemia as a source of iron. It acts as an anti anaemic reagent.
  • It is used for the surface treatment of metals.
  • It is also used for sewage and water treatment.

Ferrous Sulfate Heptahydrate

  • Sewage treatment
  • Soil amendment
  • Reducing agent
  • Feed grade ferrous

Ferrous sulfate heptahydrate, also known as green vitriol, has a blue-green sandy crystal appearance, it is light green when dissolved in aqueous solution. Ferrous sulfate heptahydrate itself is unstable and easy to be weathered and oxidized. At present, the simple and direct method of utilization is to make it lose 6 crystal water by air drying,acuum dryin.

MORE PRODUCTS
Item Content
FeSO4.7H2O % ≥ 85.0
TiO2 % ≤ 1.0
H2SO4% ≤ 2.0
Pb% ≤ 0.003
As% ≤ 0.001

The difference between ferrous hexahydrate and ferrous monohydrate：

  1. Different physical properties:Ferrous sulfate heptahydrate is a by-product of titanium dioxide plant, which is light green or green granular solid. The crystal particles of ferrous sulfate heptahydrate are larger than that of ferrous sulfate monohydrate. Ferrous sulfate heptahydrate is a blue-green monoclinic crystal which is easy to be weathered. The surface is easy to be oxidized in wet air to form brownish yellow basic ferric sulfate (Fe (OH) SO4), so it is easy to deteriorate during storage and transportation.
  2. Different stability:Ferrous sulfate monohydrate will decompose into ferric oxide and release sulfur dioxide when heated. Its content is generally more than 98%, its molecular weight is 169.9229, and its melting point and boiling point are 64 ℃ and 330 ℃ respectively. Ferrous sulfate heptahydrate only undergoes simple impurity removal in the titanium dioxide plant, which is the reason why it contains seven crystal water. Its content is generally between 80-90%, which is relatively unstable, with water dripping. Its molecular weight is 278.05, melting point is 69 ℃, and ferrous sulfate heptahydrate is relatively easy to undergo oxidation-reduction reaction with air compared with ferrous monohydrate.
  3. Different uses:Because ferrous sulfate monohydrate is feed grade, it is often used as a feed additive, which has a good role in supplying nutritional iron for livestock and preventing the occurrence of anemia disease in animals. Enhance the resistance of livestock to diseases during growth. It can also be used as raw material to prepare iron oxide red and other pigments. And gradually applied to the fertilizer market.As a reducing agent, ferrous sulfate heptahydrate is widely used in wastewater treatment as decolorization and flocculation. It can also be used to remove the toxic chromate in cement, and used as a blood tonic in medicine. Because of its low cost, it is more widely used.

1.Water Treatment

Introduction to water-treated ferrous sulfate:

The common ferrous sulfate used in the water treatment is the ferrous sulfate containing seven crystalline water, also known as the ferrous sulfate heptahydrate.

Ferric sulfate has good flocculation effect, large coagulation particles, fast settlement, good color removal effect, low cost, and can be used in the treatment of a variety of wastewater.

Ferrite sulfate is widely used in water treatment. It can be subdivided as follows:

As a coagulant: Ferrite sulfate coagulant agent is widely used in the treatment of printing and dyeing wastewater, the key to printing and dyeing wastewater treatment is decolorization and COD removal, and coagulation decolorization is an indispensable link, sulfuric acid has a very stable printing and dyeing wastewater decolorization treatment removal effect. Water-treated ferrous sulfate is easily oxidized to a yellow or rust color in wet air. Soluve in water, the general concentration of the prepared solution is about 5% -10%, the product content is 80% -95%. As a coagulant, the coagulation particles are large, good hydrophobic, fast settlement, very good color removal effect, and low cost of treatment agents.

As a reducing agent: Ferric sulfate is a strong reducing agent and has an outstanding effect in treating chromium-containing wastewater. The hexavalent chromium in the chromium-containing wastewater of the electroplating plant can be reduced into trivalent chromium, which has a low price and does not produce toxic and carcinogenic irritant gases.

As flocculant: Ferrous sulfate is used as a flocculant with fast sedimentation rate, small and dense overall sludge volume, and good color removal effect. It is very suitable for subsequent sewage with biochemical treatment system, and is a common flocculant for printing and dyeing wastewater and textile wastewater treatment. It can replace polyaluminum chloride, polyferric sulfate, aluminum sulfate, etc. as more economical and practical flocculants, and can remove a large number of suspended solids in sewage, and remove part of cod and decolorization.

As a precipitant: Ferrous sulfate can form sediment with sulfide and hydrate to remove sulfide and phosphate, which has obvious effect on the treatment of sulfur-containing wastewater in printing and dyeing plants.

As a decolorization agent: Ferrous sulfate not only has the characteristics of flocculation and sedimentation, but also has the effect of decolorization, and can also remove some heavy metal ions. Especially, ferrous sulfate has obvious effects on decolorization and COD removal of printing and dyeing wastewater, and ferrite co-precipitation of electroplating wastewater.

As a bionutrient: Ferric sulfate is mainly used as iron nutrition for microorganisms in the biochemical system to improve the activity of microorganisms in the system, so as to ensure and improve the efficiency and stability of the system.

Be used to treat chromium-containing wastewater: Chromic acid is sometimes used in the process of electroplating and leather production, which results in the residual heavy metal ions in the wastewater containing chromium metal ions. Chromium ion compounds are toxic and exist in the wastewater in the form of trivalent chromium, hexavalent chromium or metallic chromium. The main treatment method of hexavalent chromium can be chemical reduction precipitation. Ferrous sulfate has a very strong reducibility to hexavalent chromium and can reduce chromium ion to produce chromium hydroxide precipitation.

Treatment of cyanide-containing wastewater: Cyanide-containing wastewater comes from a wide range of sources (such as electroplating wastewater). A very small amount of cyanide will cause people and livestock to be poisoned and die in a very short time, and will also cause crop production reduction. There are many methods to treat cyanide-containing wastewater, such as acidification recovery, membrane separation, chemical complexation, extraction, natural degradation, chemical oxidation, etc. In addition to adding ferrous sulfate, the chemical complexation method also needs to add a little auxiliary agent, usually polyacrylamide. In addition to removing cyanide in sewage, it can also remove COD and some heavy metals in water.

Fenton Reagent: Fenton Fenton reagent Fenton Fenton reagent has very high oxidation capacity. Fenton reagent method is a kind of advanced treatment process combining ferrous sulfate and hydrogen peroxide. It uses the strong oxidation-reduction of ferrous sulfate and hydrogen peroxide to generate hydroxyl radicals with strong oxidizing reaction, and forms free radicals with refractory organic substances. It is widely used in chemical wastewater, and is the most widely used in electroplating wastewater treatment. Fenton reagent mainly consists of ferrous sulfate and hydrogen peroxide, which are often used separately in wastewater treatment. The combination technology of the two is advanced strong oxidation technology. This is because the mixed solution of hydrogen peroxide (H2O2) and divalent iron ion Fe oxidizes large molecules into small molecules and small molecules into carbon dioxide and water. At the same time, FeSO4 can be oxidized into trivalent iron ions, which has a certain flocculation effect. The trivalent iron ions become ferric hydroxide, which has a certain net capture effect, so as to achieve the purpose of water treatment. It is widely used in chemical wastewater, and most widely used in electroplating wastewater treatment.

2.Feed-grade Ferrous Sulfate

Introduction to feed grade ferrous sulfate:

Ferrous sulfate is a mineral feed additive, which is widely used in feed industry. Iron element is an important component of hemoglobin, myoglobin, cytochrome and a variety of enzymes. Ferrous sulfate can supplement the iron required for the growth of livestock, promote the growth and development of livestock and aquatic animals, enhance disease resistance, and improve feed efficiency. Iron also has detoxification effect on gossypol, a toxin contained in cottonseed cake in feed.
Feed-grade ferrous sulfate species:

Disadvantages of Ferrous sulfate heptahydrate (FeSO4.7H2O ) as feed raw material:

1. The water content of Ferrous sulfate heptahydrate is too high, which is easy to adhere to the sieve plate or crushing chamber in the crushing process, blocking the sieve hole, reducing the effective screening area of the sieve plate, resulting in the reduction of output;

2, Ferrous sulfate heptahydrate will affect the stability of vitamins in the feed, such as will promote the oxidation failure of vitamin A;

3. After storage for a certain period of time, it is easy to block phenomenon, which is not conducive to subsequent processing;

4. In the preparation of the premix, the oxidation reaction is ineffective because the ferrous salts containing multiple crystalline water are easy to react with the carrier stone powder or the calcium carbonate. The most effective way to remove free water and crystalline water in Ferrous sulfate heptahydrate, make it into good storage performance, high iron content of ferrous monohydrate ferrous sulfate, ferrous sulfate monohydrate has higher purity and higher content related to Ferrous sulfate heptahydrate , longer shelf life (6-9 months not lump). The feed grade ferrous sulfate is almost all monohydrate ferrous sulfate.

The main functions of ferrous sulfate as feed are as follows:

1. Supplement the nutritional needs of ferrous iron in livestock and poultry, and prevent and treat iron deficiency anemia and its complications;

2, enhance the immune function of the body, improve the carcass quality, make the skin ruddy, bright red;

3. Promote growth and improve feed remuneration.


Characteristics of feed-grade ferrous sulfate:

The feed grade ferrous sulfate monohydrate produced by our company adopts wet capacity solution, recrystallization dehydration, and stainless steel equipment drying process. The products have the characteristics of high main element content, good solubility, pure color, no agglomeration, good fluidity, no crushing and screening. Ferrous sulfate monohydrate is 1.5 times of the iron content of ferrous sulfate heptahydrate. Compared with Ferrous sulfate heptahydrate , it is not easy to oxidation, deteriorate and stable properties. It is the best ingredient for feed processing and production of iron supplement.

3.Plant Growth

Soil conditioner ferrous sulfate:

Iron(II) sulfate is sold as ferrous sulfate, a soil amendment for lowering the pH of a high alkaline soil so that plants can access the soil’s nutrients.

When cultivating crops, first of all, it is necessary to find out the suitable range of pH of the cultivated crops, whether they prefer acidic soil or neutral soil or can be suitable for alkaline soil. If the soil is too acidic or alkaline, it will affect the root growth of plants to a certain extent, thus affecting the normal growth of plants. General crops grow best in neutral, weakly acidic and weakly alkaline soils.

The soil pH is divided into five levels: strongly acidic soil (pH less than 5), acidic soil (pH 5.0-6.5), neutral soil (pH 6.5-7.5), alkaline soil (pH 7.5-8.5), and strongly alkaline soil (pH greater than 8.5)

4.Specially Used for Flowers:

Ferrous sulfate is suitable for acid plants to supplement iron to plants. Prevent yellow leaf disease. Iron deficiency can easily lead to chlorosis of leaves and root necrosis of some flowers. In some places, a small amount of ferrous sulfate will be added when watering and fertilizing flowers to improve the acidity of the pot soil and meet the needs of plant growth. Ferrous sulfate can also be used in gardening to kill moss, remove moss and lichen, and improve soil.

In horticulture it is used for treating iron chlorosis. Although not as rapid-acting as ferric EDTA, its effects are longer-lasting. It can be mixed with compost and dug into the soil to create a store which can last for years. Ferrous sulfate can be used as a lawn conditioner.It can also be used to eliminate silvery thread moss in golf course putting greens.

Applicable flowers:

Ferrous sulfate is suitable for liking acid soil flowers and trees. Due to the weakening of the acid in the basin soil, the leaves are yellow, or even zoom, and ferrous sulfate can be applied. Gardening trees are also suitable for ferrous sulfate application. Note: do not see the yellow of the leaf is iron deficiency, usually flower iron deficiency disease occurs in new leaves, the veins yellowing, the veins still remain green. Disease spots do not appear very often. In severe cases, the leaf margin and leaf tip are dry, and sometimes expand inward, forming a large area, and only the larger leaf veins remain green. To be determined that iron deficiency after the application of iron sulfate fertilizer

5.Medical Use

Ferrous sulfate is used to treat iron deficiency anemia; It is also used to add iron to food, and long-term excessive use may cause side effects such as abdominal pain and nausea.

Medically, it can also be used as a local astringent and blood tonic, and can be used for chronic bleeding caused by uterine fibroids.

Iron supplements, also known as iron salts and iron pills, are a number of iron formulations used to treat and prevent iron deficiency including iron deficiency anemia.For prevention they are only recommended in those with poor absorption, heavy menstrual periods, pregnancy, hemodialysis, or a diet low in iron.Prevention may also be used in low birth weight babies.They are taken by mouth, injection into a vein, or injection into a muscle.While benefits may be seen in days, up to two months may be required until iron levels return to normal.

6.Industrial Ferrous Sulfate

Industrial applications of ferrous sulfate:

Ferrous sulfate is important valent iron salt, ferrous iron sulfate industry used in iron salt, magnetic iron oxide, ink, iron oxide red , used as iron catalyst, dyeing agent, tanning agent, water purifier, wood preservatives and disinfectant, etc., and is widely used in feed and food additives as iron supplements, hair color. The ferrous sulfate consists mainly of ferrous heptahydrate sulfate and ferrous monohydrate sulfate.

Ferrous sulfate can be used to stain concrete and some limestones and sandstones a yellowish rust color.

Woodworkers use ferrous sulfate solutions to color maple wood a silvery hue.

Green vitriol is also a useful reagent in the identification of mushrooms.

Preparation of high purity manganese dioxide: ferrous sulfate has strong reduction, the main component of soft anite is MnO2, and MnO2 has strong oxidation under conditions, so under sexual conditions, they can be mixed together to prepare high purity manganese dioxide.

Refined ferrous sulfate: there are many methods to purify ferrous sulfate, such as recrystallization method, hydrolysis precipitation method, ultrafiltration method, etc. After purification, ferrous sulfate can be directly used as the starting raw material for subsequent preparation of high quality iron oxide, and can be directly used as the starting raw material for water purification agent.

Preparation of polyferric sulfate: flocculation is a water treatment technology widely used at home and abroad. The quality of flocculation effect depends on the performance of flocculant. Polymeriron sulfate is a new and efficient iron inorganic polymer flocculant, is a kind of basic iron sulfate polymer. With the characteristics of short condensation time and good settlement performance of catkins, the removal rate of wastewater turbidity can reach more than 95%, and the removal rate of wastewater color can reach 80%.

Preparation of iron oxide red: iron oxide red, is a red pigment, its composition is Fe2O3, namely hematite. Non-toxic, insoluble in water, has a very high covering force and coloring force, its light resistance, heat resistance, alkali resistance and dilute acid resistance are very good. Iron sulfate can be used to prepare iron oxide red, to achieve waste reuse.

Preparation of iron oxide yellow: iron oxide yellow, is a yellow pigment, namely needle iron ore, its light resistance, pollution turbidity gas resistance and alkali resistance are very strong, but the acid resistance is poor. The preparation of ultrafine transparent iron oxide yellow with ferrous sulfate is ideal.

Nano iron oxide: nano iron oxide is transparent iron oxide, has the advantages of high transparency, good dispersion, bright color, in the paint, ink, plastics and other industries have a wide range of uses, is a new variety with unique properties of iron pigments. With ferrous sulfate and industrial grade ammonium bicarbonate as raw material, ferrous iron oxide can be produced by liquid phase method.

Metal anticorrosion: in the straight water cooling system, a small amount of ferrous sulfate can be added to the water inlet of the condenser to form a layer of iron oxide protective film on the inner surface of the copper alloy tube, so as to prevent or reduce the corrosion of the alloy tube.

Others: ferrous sulfate can also be used to make blue and black ink and leather dyeing, as well as photography and printing plate making. It can also be used as an etcher for aluminum devices, a catalyst for polymerization in the chemical industry, reagents in chemical analysis, wood preservatives, and therapeutic drugs for iron deficiency anemia.

Ferrous Sulfate Monohydrate

  • Iron oxide pigment
  • Anti anemia drug
  • Feed additive
  • Chromatographic analysis reagents

Characteristics:grayish white to beige smooth powder, astringent, difficult to oxidation. Easy easily save than FeSO4.7H2O. Water-soluble water is acidic and cloudy, gradually forming a yellowish-brown precipitate. The et air absorbs water into seven water salts. Heat up to 120 without water loss. Slowly dissolve in cold water, heating will quickly dissolve. When heated, ferrous sulfate breaks down into ferrous trioxide and releases sulfur dioxide.

MORE PRODUCTS
Item Content
FeSO4·H2O ≥91.0%
Fe ≥30.0%
Pb ≤0.002%
As ≤0.0015%
Moisture ≤0.80%
Fineness (50 mesh) ≥95%

The reason why ferric sulfate monohydrate has more advantages than heptahydrate：

  1. The content of ferric sulfate monohydrate is higher: the content of ferric sulfate monohydrate can be stabilized at 98% – 99%, compared with the 85% – 90% content range of ordinary ferrous sulfate heptahydrate. If it is also used as iron salt, its dosage is smaller, and the sludge yield is less than 1/2 of ordinary ferrous sulfate. The consumption can greatly reduce the cost and sludge treatment capacity.
  2. The effect of ferric sulfate monohydrate is better: compared with ordinary ferrous sulfate, the reaction speed of ferric sulfate monohydrate is faster when it is used as water treatment coagulation. The floc formed after adding is large, the sedimentation speed is fast, and the sludge volume is small and dense. Its decolorization and phosphorus removal effect is very good. The removal effect of sulfide and phosphate is better than that of ferrous sulfate heptahydrate. So although the price of ferric sulfate monohydrate is twice that of ordinary ferrous sulfate, the reduction of dosage and the improvement of effect reduce a lot of costs.
  3. Monohydrate has a longer shelf life: ordinary ferrous sulfate heptahydrate is easily dripping blue granules, with a shelf life of 1-3 months, and is prone to caking and air oxidation deterioration, while ferric sulfate monohydrate is dry milky white powder after purification, with a shelf life of 6-12 months, without caking permanently and without moisture absorption.
  4. ferric sulfate monohydrate is more widely used: ferric sulfate monohydrate can be used as a soil improvement and remediation agent, and battery enterprises can be used as catalysts, preservatives and disinfectants; Many applications such as ordinary ferrous sulfate heptahydrate cannot be applied because of its content and other indicators.
Industrial production

1.Sulfuric acid method: Dissolve iron scraps in a mixture of dilute sulfuric acid and mother liquor, maintaining the reaction temperature below 80°C to prevent the precipitation of ferrous sulfate monohydrate. After clarifying the slightly acidic ferrous sulfate solution to remove impurities, cool it, centrifuge, and obtain light green ferrous sulfate.

2.By-product method for producing titanium dioxide: During the sulfuric acid decomposition of ilmenite to produce titanium dioxide, ferrous sulfate and ferric sulfate are generated. Trivalent iron is reduced to divalent iron using iron wire. By freezing crystallization, by-product ferrous sulfate can be obtained.

3.Dissolve 400 parts of industrial ferrous sulfate in 70-80°C distilled water, add a small amount of silver sulfate to the hot solution, and boil with steam to remove Cl-. After cooling the solution with qualified Cl- content, adjust the pH to 5-6, pass hydrogen sulfide to ensure the content of ions such as Zn2+, Cu2+ is qualified. Then filter, the filtrate must be clear. Boil the filtrate with steam for 1 hour after precipitation is complete, then filter. Adjust the pH of the filtrate to 1-2 with chemically pure sulfuric acid, evaporate and concentrate to 38-40°C, filter while hot, adjust the pH of the filtrate to 1 with chemically pure sulfuric acid, cool and crystallize, dry, and dry below 60°C until it does not stick to the spoon. The finished product must be sealed, protected from light, and strictly prevent organic matter from mixing in. The mother liquor can be recycled.

4.Ferrous sulfate can be obtained by dissolving metallic iron in dilute sulfuric acid. Iron wire or iron scraps are first treated with sodium hydroxide solution to remove oil contamination, washed with water, then placed in a 15%-20% sulfuric acid solution, heated to dissolve until the undissolved residue no longer dissolves. Filter the solution and transfer it to a flask, acidify with sulfuric acid until Congo red shows an acidic reaction. After cooling, saturate with hydrogen sulfide, seal the flask, let it stand for 2-3 days, then heat the flask on a water bath and filter to remove carbon, carbides, and sulfide precipitates. Transfer the filtrate to a Fuzi distillation flask, evaporate and concentrate the solution to half its original volume under anaerobic CO2 conditions. Let the solution stand in CO2 gas overnight to precipitate ferrous sulfate crystals.

Ferric Aluminium Sulfate Powder

  • Sewage treatment
  • Disinfection and purification
  • Agricultural function
  • Firefighting foams

Ferric alum appears as a white powder or crystalline. The crystalline and powder forms of the substance are soluble in water. However, it is not soluble in organic solvent such as ethanol. When in water, the solution appears clears and does not form a residue. Both of them are not toxic and do not catch flames. However, it can present an environmental hazard if spread in a large area.

MORE PRODUCTS
Item Content
Purity 98%
Fe 19.7%
Pb 0.0020%
As 0.0005%
Cd 0.0005%
Water Insoluble 0.5%

Advantages of ferrous sulfate as iron nutrition fortifier:

From the perspective of absorption, the relative bioavailability of ferrous sulfate is 100%, ferrous gluconate is 89%, ferrous citrate is 51%, and ferrous pyrophosphate is only 21-25%. This is because ferrous sulfate is divalent iron, which is relatively stable and has high bioavailability in human body. However, iron pyrophosphate is trivalent iron, and its solubility in gastric acid is variable. With the change of processing method, the absorption rate often changes greatly, which is not as easy to be absorbed by human body as ferrous iron.

From the perspective of cost: taking ferrous sulfate as the standard and taking the relative cost per milligram as 1, the cost per milligram of iron pyrophosphate is 4.7 times that of ferrous sulfate, 6.7 times that of ferrous gluconate, and 4.4 times that of ferric ammonium citrate and ferrous pyrophosphate.

By comparing the content of iron in each milligram of substance, the content of iron in iron pyrophosphate is the highest, followed by ferrous sulfate, followed by ferrous citrate and ferrous gluconate.

In combination with the above three aspects, ferrous sulfate has incomparable advantages in terms of bioavailability, cost per milligram and content of iron element in substances, and has become the most widely used iron nutrition fortifier.

Security Precautions

  1. Hazard overview:Health hazard: irritating to respiratory tract, causing cough and shortness of breath by inhalation. Irritating to eyes, skin and mucous membranes. Misuse may cause weakness, abdominal pain, nausea, blood in stool, lung and liver damage, shock, coma, etc., and may cause death in serious cases.

  2. Environmental hazard: it is harmful to the environment and can pollute the water body.Fire and explosion hazard: This product is non-flammable and irritating.

  3. Precautions for storage:Store in a cool and ventilated warehouse. Keep away from kindling and heat sources. Protect from direct sunlight. The package must be sealed and free from moisture. It should be stored separately from oxidants and alkalis, and should not be mixed. The storage area shall be equipped with appropriate materials to contain the leakage

  4. Operation precautions: Closed operation, local ventilation. Prevent dust from being released into the workshop air. Operators must undergo specialized training and strictly adhere to operating procedures. It is recommended that operators wear self-priming filter dust masks, chemical safety goggles, rubber acid and alkali resistant clothing, and rubber acid and alkali resistant gloves. Avoid generating dust. Avoid contact with oxidants and alkalis. Equipped with leakage emergency response equipment. Empty containers may have residual harmful substances.

Send a

Message Today !

Write to us today and our experts will get you covered.

Send us a message if you have any questions or request a quote. We will be back to you ASAP!

Maanshan Wit-Stone Trade Co., Limited. Supplier of high-quality industrial & mining chemical in China.

Company

Main Menu

Contact

Workshop No. 1, Cross-Border E-Commerce Industrial Park, Comprehensive Bonded Zone, Zhengpu Port New District, Manshan, Anhui, China

+86-15955527232

feronia@wit-stone.com

www.chinachemcore.com

Give us your needs

Please provide your details below and we will contact you within 24 hours.