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Ferrous sulfate heptahydrate

Solubility in water (g/100mL) Chemical properties Applications Preparation Category Toxicity Grading Acute Toxicity Flammability Hazardous Characteristics Storage and Transport Extinguishing Agent
Ferrous sulfate heptahydrate
Ferrous sulfate heptahydrate structure
Chemical Name:
Ferrous sulfate heptahydrate
25lbs;Fesofor;Ironate;FERROIN;Haemofort;Presfersul;Ironvitrol;Ccris 7331;Greenvitrol;Ferrous suL
Molecular Formula:
Formula Weight:
MOL File:

Ferrous sulfate heptahydrate Properties

Melting point:
64 °C
1.897 g/mL at 25 °C
vapor pressure 
14.6 mm Hg ( 25 °C)
storage temp. 
25.6 g/100 mL (20°C)
Slightly greenish to blue
Specific Gravity
3.0-4.0 (25℃, 50mg/mL in H2O)
Water Solubility 
25.6 g/100 mL (20 ºC)
Air Sensitive & Hygroscopic
Stable. Substances to be avoided include strong oxidizing agents. Air and moisture sensitive.
CAS DataBase Reference
7782-63-0(CAS DataBase Reference)
Substances Added to Food (formerly EAFUS)
EPA Substance Registry System
Ferrous sulfate heptahydrate (7782-63-0)
  • Risk and Safety Statements
Signal word  Warning
Hazard statements  H302-H315-H319
Precautionary statements  P280a-P301+P312a-P321-P332+P313-P501a-P301+P312+P330-P305+P351+P338
Hazard Codes  Xn,Xi
Risk Statements  22-36/38
Safety Statements  36/37/39-46
WGK Germany  -
RTECS  NO8510000
HS Code  28332950
Toxicity LD50 in mice: 65 mg/kg i.v.; 1.52 g/kg orally (Hoppe)

Ferrous sulfate heptahydrate price More Price(35)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 12354 Iron(II) sulfate heptahydrate puriss., meets analytical specification of Ph. Eur., BP, USP, FCC, 99.5-104.5% (manganometric) 7782-63-0 1kg $97.5 2019-12-02 Buy
Sigma-Aldrich 12354 Iron(II) sulfate heptahydrate puriss., meets analytical specification of Ph. Eur., BP, USP, FCC, 99.5-104.5% (manganometric) 7782-63-0 6x1kg $551 2019-12-02 Buy
Alfa Aesar 012967 Iron(II) sulfate heptahydrate, Puratronic?, 99.999% (metals basis) 7782-63-0 25g $236 2020-06-24 Buy
Alfa Aesar 012967 Iron(II) sulfate heptahydrate, Puratronic?, 99.999% (metals basis) 7782-63-0 5g $62.9 2020-06-24 Buy
Strem Chemicals 93-2639 Iron(II) sulfate heptahydrate, 99+% (ACS) 7782-63-0 250g $47 2020-06-24 Buy

Ferrous sulfate heptahydrate Chemical Properties,Uses,Production

Solubility in water (g/100mL)

Dissolved grams in 100 mL water at different temperatures (°C):
28.8g/0℃: 40g/10℃;48g/20℃;60g/30℃;73.3g/40℃
101g/60℃: 79.9g/70℃;68.3g/80℃;57.8g/90℃

Chemical properties

Blue-green crystals (monoclinic system) or granules, odorless. Soluble in water, slightly soluble in alcohol, soluble in anhydrous methanol.


As analytical reagent; as raw material for ferrite; raw material to produce magnetic iron oxide, iron(III) oxide and iron blue inorganic pigment, iron catalyst and poly iron sulfate; as chromatographic reagent. In agriculture, it is used as pesticide in agriculture to control wheat smut, scab of apple and bear, fruit tree decay; as fertilizer to remove moss and lichen of food trunk. Medically it is used as local astringent, blood tonic and anti-anemia.  Ferrous sulfate heptahydrate (feed grade) can be used as the iron fortifier for feed additive. Ferrous sulfate heptahydrate (food grade) is used as nutrition supplements, such as iron fortifier, coloring agent for fruit and vegetable. According to Chinese regulation, it can be used in following foods and with allowed amounts:
Sweets with filling and salt: 3000~6000 mg/kg;
Cereals with high iron content and corresponding products (maximum daily consumption 50g): 860~960 mg/kg;
Dairy and infant foods: 300-500 mg/kg;
Cereals and corresponding products: 120~140 mg/kg;
Beverages: 50~100 mg/kg. It is used to produce iron salt, iron oxide pigment, mordant, water purifier, preservatives, disinfectant, etc.


Titanite is decomposed with sulfuric acid to obtain titanium dioxide, ferrous sulfate(II) and ferric sulfate (III). Iron (III) compounds are reduced to obtain iron (II) compounds. The mixture is then cooled and crystallized to form ferrous sulfate.
Scrap iron is dissolved with a mixture of diluted sulfuric acid solution and mother solution. The reaction temperature should be below 80°C, otherwise, it results in the sedimentation of ferrous sulfate monohydrate. Clarification is applied to remove impurities from the slightly acidic ferrous sulfate solution. Cooling and centrifugation are carried out obtain light-green ferrous sulfate.


Toxic substance

Toxicity Grading

Middle toxic

Acute Toxicity

Oral-rat LD50: 1389 mg/kg; oral-mouse LD50: 1520 mg/kg.

Flammability Hazardous Characteristics

Not flammable, change into ferric oxide smoke at high temperature.

Storage and Transport

Stored in well-ventilated area, low temperature and dry.

Extinguishing Agent

Water, carbon dioxide, dry powder, sand.


§184.1315(a) Ferrous sulfate heptahydrate (iron (II) sulfate heptahydrate, FeS04-7H2O) is prepared by the action of sulfuric acid on iron. It occurs as pale, blueish-green crystals or granules. Progressive heating of ferrous sulfate heptahydrate produces ferrous sulfate (dried). Ferrous sulfate (dried) consists primarily of ferrous sulfate monohydrate (CAS No. 17375-41-6) with varying amounts of ferrous sulfate tetrahydrate (CAS No. 20908-72-9) and occurs as a grayish-white to buff-colored powder.

Chemical Properties

Ferrous sulfate is a greenish or yellowish solid in fine or lumpy crystals.

Chemical Properties

light blue or light blue-green solid


Used in quantitative analysis of nitrates .


In manufacture of Fe, Fe Compounds, other sulfates; in Fe electroplating baths; in fertilizer; as food and feed supplement; in radiation dosimeters; as reducing agent in chemical processes; as wood preservative; as weed-killer; in prevention of chlorosis in plants; in other pesticides; in writing ink; in process engraving and lithography; as dye for leather; in etching aluminum; in water treatment; in qualitative analysis ("brown ring" test for nitrates); as polymerization catalyst.


ChEBI: A hydrate that is the heptahydrate form of iron(2+) sulfate. It is used as a source of iron in the treatment of iron-deficiency anaemia (generally in liquid-dosage treatments; for solid-dosage treatments, the monohydrate is normally used).

General Description

A greenish or yellow-brown crystalline solid. Density 15.0 lb /gal. Melts at 64°C and loses the seven waters of hydration at 90°C. The primary hazard is the threat to the environment. Immediate steps should be taken to limit its spread to the environment. Used for water or sewage treatment, as a fertilizer ingredient.

Air & Water Reactions

Water soluble

Reactivity Profile

Ferrous sulfate heptahydrate is a weak reducing agent.

Health Hazard

INGESTION: abdominal pain, retching, diarrhea, dehydration, shock, pallor, cyanosis, rapid or weak pulse, shallow respiration, low blood pressure.

Safety Profile

Poison by intravenous, intraperitoneal, and subcutaneous routes. Moderately toxic by ingestion and rectal routes. Mutation data reported. When heated to decomposition it emits toxic fumes of SOx.

Potential Exposure

It is used as a fertilizer, food or feed additive; and in herbicides; process engraving; dyeing, and water treatment. A byproduct of various chemical and metal treating operations.

Purification Methods

Crystallise the sulfate from 0.4M H2SO4, or precipitate it from an aqueous solution with EtOH. It is efflorescent in dry air, and is converted to the tetrahydrate at 57o, then to the monohydrate at 65o (or by heating the heptahydrate in a vacuum at 140o). It forms a brown-black complex, FeSO4.NO, with nitric oxide and is used in a qualitative test for nitrates (“brown ring” test).


Aqueous solution is acidic. Contact with alkalies form iron. Keep away from alkalies, soluble carbo nates; gold and silver salts; lead acetate; lime water, potassium iodide; potassium and sodium tartrate; sodium borate; tannin.

Ferrous sulfate heptahydrate Preparation Products And Raw materials

Raw materials

Preparation Products

Ferrous sulfate heptahydrate Suppliers

Global( 263)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Jiangsu Kolod Food Ingredients Co.,Ltd.
+86-518-85110578 18805133257
+86-518-85110578 CHINA 100 60
Henan DaKen Chemical CO.,LTD.
+86-371-55531817 CHINA 21821 58
Hangzhou Bayee Chemical Co., Ltd.
0086-571-85775919 China 105 55
Henan Tianfu Chemical Co.,Ltd.
0371-55170693 CHINA 22626 55
Hefei TNJ Chemical Industry Co.,Ltd.
86-0551-65418684 18949823763
86-0551-65418684 China 2399 55
Chemwill Asia Co.,Ltd.
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Hubei Jusheng Technology Co.,Ltd.
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Haihang Industry Co.,Ltd
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Cangzhou Wanyou New Material Technology Co.,Ltd
18631714998 CHINA 914 58
Hubei xin bonus chemical co. LTD
027-59338440 CHINA 23045 58

View Lastest Price from Ferrous sulfate heptahydrate manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2019-04-02 Ferrous sulfate heptahydrate Manufacturer; In stock GMP Factory
US $1.00 / KG 1KG High quality manufacturer TOP 3 largest production factory in China Chemwill Asia Co.,Ltd.
2020-05-19 Iron sulfate heptahydrate
US $1.00 / KG 1KG 99% 20T Shaanxi Dideu Medichem Co. Ltd
2020-01-02 Ferrous sulfate heptahydrate
US $1.00 / KG 1KG 99% 10000KGS Career Henan Chemical Co

Ferrous sulfate heptahydrate Spectrum

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