Ferrous sulfate heptahydrate

Ferrous sulfate heptahydrate - Names and Identifiers

Name	Iron(II) sulfate heptahydrate
Synonyms	Fesofor Ironate Haemofort Presfersul Ironvitrol Greenvitrol Green vitriol Ferrous sulfate hepta IRON SULFATE, HEPTAHYDRATE IRON(II) SULPHATE 7-HYDRATE Ferrous sulfate heptahydrate Ferrous sulphate heptahydrate Iron(II) sulfate heptahydrate Iron(II) sulphate heptahydrate IronsulfateheptahydrateACSoffwhitepowder
CAS	7782-63-0
EINECS	616-510-7
InChI	InChI=1/Fe.H2O4S.H2O/c;1-5(2,3)4;/h;(H2,1,2,3,4);1H2
InChIKey	SURQXAFEQWPFPV-UHFFFAOYSA-L

Ferrous sulfate heptahydrate - Physico-chemical Properties

Molecular Formula	FeH14O11S
Molar Mass	278.01
Density	1.898 g/mL at 25 °C (lit.)
Melting Point	64 °C
Boling Point	330°C at 760 mmHg
Water Solubility	25.6 g/100 mL (20 ºC)
Solubility	25.6 g/100 mL (20°C)
Vapor Presure	14.6 mm Hg ( 25 °C)
Appearance	Blue green crystal
Specific Gravity	1.898
Color	Slightly greenish to blue
Exposure Limit	ACGIH: TWA 1 mg/m3NIOSH: TWA 1 mg/m3
Merck	14,4057
PH	3.0-4.0 (25℃, 50mg/mL in H2O)
Storage Condition	Store at +15°C to +25°C.
Stability	Stable. Substances to be avoided include strong oxidizing agents. Air and moisture sensitive.
Sensitive	Air Sensitive & Hygroscopic
MDL	MFCD00149719
Physical and Chemical Properties	Trait: blue-green monoclinic crystal or granule, without odor. melting point 64 ℃ relative density 1.898 solubility: soluble in water, slightly soluble in alcohol, soluble in anhydrous methanol.
Use	For iron salt, iron oxide pigment, mordant, water purification agent, preservatives, disinfectants, medicine as anti-anemia drugs

Ferrous sulfate heptahydrate - Risk and Safety

Hazard Symbols	Xn - Harmful
Risk Codes	R22 - Harmful if swallowed R36/38 - Irritating to eyes and skin.
Safety Description	S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S46 - If swallowed, seek medical advice immediately and show this container or label.
UN IDs	UN 9125
WGK Germany	1
RTECS	NO8510000
FLUKA BRAND F CODES	10-23
TSCA	Yes
HS Code	28332950
Toxicity	LD50 in mice: 65 mg/kg i.v.; 1.52 g/kg orally (Hoppe)

Ferrous sulfate heptahydrate - Upstream Downstream Industry

Raw Materials	Sulfuric acid Iron
Downstream Products	Sodium ferrocyanide Potassium hexacyanoferrate Iron (III) oxide monohydrate C.I. Pigment Black 11

Ferrous sulfate heptahydrate - Reference

Reference

1. Lu Dandan, Mao Xiaoying. Interaction modes and antioxidant activities of walnut polyphenols and protein [J]. Science and Technology of food industry, 2019, 040(013):23-28.
2. Zhang Meng, Cao Tingting, Cheng Lagerstroemia, Jin Wenyuan, Jin Peng, Zheng Yonghua. Effects of high humidity storage on chilling injury and antioxidant activity of green pepper fruit [J]. Food Science, 2021,42(03):243-250.

Ferrous sulfate heptahydrate - Nature

Open Data Verified Data

blue-green monoclinic crystal or granule, odorless and tasteless. The relative density is 1.89 and the melting point is 64 °c. Soluble in water, slightly soluble in alcohol, soluble in anhydrous methanol. When the temperature reaches 56.6 ° C, three molecules of crystal water are lost; 65 to 90 ° C becomes a hydrate; 300 ° C becomes a white powder of anhydrous matter; Temperature to 480 ° C began to decompose.

Last Update：2024-01-02 23:10:35

Ferrous sulfate heptahydrate - Preparation Method

Open Data Verified Data

ferrous sulfate was obtained from the reaction of dilute sulfuric acid with iron. Or by the sulfuric acid method for the preparation of titanium dioxide in the process of by-products of ferrous sulfate.

Last Update：2022-01-01 08:51:36

Ferrous sulfate heptahydrate - Introduction

It is weathered in dry air and oxidized to brown high-iron sulfate in humid air. It is soluble in water and almost insoluble in alcohol. It becomes tetrahydrate at 56.6 ℃ and monohydrate at 65 ℃. Soluble in water, almost insoluble in ethanol. Its aqueous solution oxidizes slowly in the air when it is cold, and oxidizes quickly when it is hot. Adding alkali or exposed light can accelerate its oxidation. It's irritating.

Last Update：2022-10-16 17:28:43

Ferrous sulfate heptahydrate - Use

Open Data Verified Data

ferrous sulfate can be used as a raw material for the production of water purifying agent and iron oxide pigment, and can also be used as a modifier for alkaline soil. Water treatment grade can be used as water treatment coagulant for drinking water, industrial sewage and wastewater. The pH value is in the range of 5.5~9.6, and the effect of water temperature on the flocculation is small, and the flocculation effect is good, but it is more corrosive. Ferrous sulfate is also a trace element fertilizer, which can accelerate the turning green of rice and sugar beet, neutralize alkaline soil, promote the maturity of farm fertilizers, and improve the growth conditions of plants.

Last Update：2022-01-01 08:51:37

Ferrous sulfate heptahydrate - Safety

Open Data Verified Data

is a low toxicity product. Ingestion may cause gastrointestinal disorders. Ingestion of children will cause Vomit, hematemesis, liver damage. Staff should be protected. Strictly prevent pollution, sun exposure, rain and moisture during storage and transportation

Last Update：2022-01-01 08:51:37

Ferrous sulfate heptahydrate - Reference Information

EPA chemical substance information	information provided by: ofmpeb.epa.gov (external link)
Introduction	ferrous sulfate chemical formula FeSO4, Common is containing seven crystal water ferrous sulfate FeSO4 · 7H2O, commonly known as Green alum. Light blue-green monoclinic crystal, density 1.898g/cm3, melting at 64 ℃ in crystal water. Soluble in water, acidic aqueous solution. It is gradually weathered in air and simultaneously oxidized to a yellow-brown basic iron salt. All water of crystallization was lost at 300 °c and the anhydrous was a white powder.
Main properties	ferrous sulfate is easily oxidized to yellow or rust in moist air. Soluble in water, General ferrous sulfate solution concentration is about 10%. As a coagulant, large coagulation particles, good water quality, fast settling, color removal effect is very good, low cost ferrous sulfate treatment agent, suitable for pH value above 8.5 wastewater treatment.
Application	ferrous sulfate: Alias: ferrous iron, ferrous sulfate heptahydrate, Green alum, drying ferrous sulfate, which can be used as a reducing agent in electroplating factories, industrial wastewater as flocculant, printing and dyeing factory as precipitant, as raw material of iron red factory, as raw material of pesticide factory, as raw material of chemical fertilizer plant, ferrous sulfate flower fertilization and so on. Widely used in printing and dyeing, paper making, domestic sewage, industrial wastewater flocculation clarification and decolorization, ferrous sulfate can also be used to treat chromium containing wastewater and cadmium containing wastewater. High alkalinity, high chroma wastewater treatment, can reduce the neutralization with a large amount of acid investment.
function	ferrous sulfate has many functions, which can be used as a fertilizer for plants, regulate the acidity of soil, increase the sudden iron content, etc, it is widely used in agricultural production and daily flowering. Ferrous sulfate is also a raw material for industrial production of iron salt, and can also be used for industrial wastewater treatment and sewage treatment in many industries. In the treatment of municipal sewage, ferrous sulfate has a strong phosphorus removal effect. High-quality ferrous sulfate is also used in food supplements and pharmaceutical production to improve anemia, but it requires medical advice to take.
method of use	ferrous sulfate is first formulated as a 5%-10% aqueous solution and then added to raw water, the pH value of raw water is adjusted to 9-11 with lime, and the effect is more ideal. Ferrous sulfate heptahydrate advantages: the price is cheap, decolorization effect is good, flocculation alum flower big, sedimentation. Under acidic conditions, add reducing agent ferrous sulfate, sodium sulfite, sodium bisulfite, sulfur dioxide, etc., the hexavalent chromium is reduced to trivalent chromium, and then add sodium hydroxide, calcium hydroxide, lime, etc, the trivalent chromium hydroxide precipitate was separated from the wastewater.
solubility in water (g/100ml)	grams dissolved per 100ml of water at different temperatures (℃): 28.8g/0 ℃;40g/10 ℃;48g/20 ℃;60g/30 ℃;73.3g/40 ℃; 101g/60 ℃;79.9g/70 ℃;68.3g/80 ℃;57.8g/90 ℃
Use	used as an analytical reagent and raw material for preparing ferrite as an iron fortifier for feed additives. agriculture can be used as a pesticide, can control wheat smut, apple and pear scab disease, fruit tree rot disease; Can also be used as fertilizer, can remove the stem of the moss and lichen. It is a raw material for the manufacture of magnetic iron oxide, iron oxide red and iron blue inorganic pigments, iron catalysts and polyferric sulfate. It is used as a local astringent and a blood tonic in medicine. It is also used as a reagent for chromatographic analysis and the like. Food grade used as nutritional supplements, such as iron fortifier, fruit and vegetable color. Feed Grade ferrous sulfate as a supplement to iron in feed processing. as food Iron fortifier. China's provisions can be used for the inclusion of sugar and salt, the use of 3000 ~ 6000mg/kg; In high iron cereals and their products (daily limit of this kind of food 50g) for 860 ~ 960mg/kg; 300-120 mg/kg in dairy products and infant food; -140mg/kg in cereals and their products; 50-mg/kg in beverages. used for iron salt, iron oxide pigment, mordant, water purification agent, preservative, disinfectant, etc., medicine as anti-anemia drug used for iron salt, iron oxide pigment, mordant, water purification agent, preservative, disinfectant, etc., medicinally used as anti-anemia, etc.
production method	production of titanium dioxide by-product method titanium iron mine sulfuric acid decomposition to produce titanium dioxide, ferrous sulfate and ferric sulfate, ferric iron was reduced to ferrous iron with iron wire. The by-product ferrous sulfate can be obtained by freezing crystallization. 5H2SO4 2FeTiO3 → 2FeSO4 TiOS04 Ti(SO4)2 5H2O sulfuric acid method iron chips dissolved in dilute sulfuric acid and mother liquor mixture, control the reaction temperature below 80 ℃, otherwise it will precipitate ferrous sulfate monohydrate precipitation. The slightly acidic ferrous sulfate solution formed by the reaction is clarified to remove impurities, then cooled and centrifuged to obtain light green ferrous sulfate. Fe H2SO4 → FeSO4 H2 ↑ sulfuric acid method sulfuric acid is mixed with the mother liquor, and when heated to 80 ℃ with steam, the scrap iron is dissolved in the reaction solution, the slightly acidic ferrous sulfate solution produced by the reaction is clarified to remove impurities, and then cooled to crystallize and centrifuged to obtain ferrous sulfate. Its Fe H2SO4 → FeSO4 H2 ↑ titanium dioxide by-product method the ferrous sulfate, which is the by-product of precipitation, freezing and separation in the production of titanium dioxide produced by sulfuric acid decomposition, is refined by recrystallization to obtain ferrous sulfate finished product. FeTio2 2H2SO4 → FeSO4 TiOSO4 TiOSO4 2H2O (1) production of titanium dioxide by-product method. Titanium iron mine sulfuric acid decomposition of titanium dioxide, the generation of ferrous sulfate and ferric sulfate, ferric iron wire reduction into divalent iron. The by-product ferrous sulfate can be obtained by freezing crystallization. (2) sulfuric acid method. Iron chips are dissolved in the mixture of dilute sulfuric acid and mother liquor, and the reaction temperature is controlled below 80 ° C. Otherwise, ferrous sulfate monohydrate precipitation will be precipitated. The slightly acidic ferrous sulfate solution formed by the reaction is clarified to remove impurities, then cooled and centrifuged to obtain light green ferrous sulfate.
category	toxic substances
toxicity grade	poisoning
Acute toxicity	oral-rat LD50 1389 mg/kg; Oral-mouse LD50: 1520 mg/kg
flammability hazard characteristics	non-combustible, high temperature into ferric oxide smoke
storage and transportation characteristics	warehouse low temperature, ventilation, dry
extinguishing agent	water, carbon dioxide, dry powder, sand
Occupational Standard	TWA 1 mg (iron)/m3

Last Update：2024-04-09 20:49:11

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Ferrous sulfate heptahydrate

Raw Materials for Ferrous sulfate heptahydrate

Sulfuric acid
Iron

Downstream Products for Ferrous sulfate heptahydrate

Sodium ferrocyanide
Potassium hexacyanoferrate
Iron (III) oxide monohydrate
C.I. Pigment Black 11

Ferrous sulfate heptahydrate

Iron(II) sulfate heptahydrate

CAS: 7782-63-0

Molecular Formula: FeH14O11S

Ferrous sulfate heptahydrate - Names and Identifiers

Ferrous sulfate heptahydrate - Physico-chemical Properties

Ferrous sulfate heptahydrate - Risk and Safety