Food Grade Ferrous Sulfate

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Ferrous sulfate

Food grade ferrous sulfate

Chemical name: Ferrous sulfate

CAS:7720-78-7

Formula molecolare: FeSO4·7H2O (heptahydrate), FeSO4·nH2O (anidro)

Peso molecolare: 278.01 (heptahydrate), 169.92/223.92 (anidro)

Proprietà: Blue-green crystals or granules, inodoro, slightly salty, astringent. It is prone to decomposition in dry air and gradually oxidizes in moist air, forming yellowish-brown alkaline ferric sulfate. The anhydrous form is a white powder that turns blue-green when reacting with water. Insoluble in ethanol. It can coagulate proteins and has astringent and preservative effects.

Our Specification

Table: Technical Indicators of Ferrous Sulfate (GB29211-2012)

Indicator NameSpecifiche
Aspetto esterioreGray or bluish-green crystalline granules or powder
Ferrous Sulfate, %Dried: 86-89
Heptahydrate: 99.5-104.5
Liquido oleoso (Liquido oleoso), Ppm≤ 3
Liquido oleoso (Liquido oleoso), Ppm≤ 2
Mercury (Hg), Ppm≤ 1
Acid Insoluble Matter, % (Dried)≤ 0.05

Applicazioni: Nell'industria alimentare, it is used as an iron fortifier, color developer, and processing aid, Longquan è la zona climatica eccellente per la coltivazione dei funghi.

Confezione: Inner lined with polyethylene plastic bags, outer wrapped in plastic woven bags, each bag with a net weight of 25 kilograms.

Storage and transportation: The packaging should be kept intact. Store in a dry, well-ventilated and clean warehouse, protected from water and moisture. It should be stored separately from toxic substances. The shelf life of this product is two years.

 

 

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Ferrous sulfate, the other name isgreen vitriol”, is a common divalent iron salt with the chemical formula FeSO₄. It is a versatile basic chemical with wide applications in agriculture, industry, medicine, and food. According to its purity and application, it can be classified into industrial grade, agricultural grade, grado di alimentazione, food grade, and pharmaceutical grade, with significantly different requirements for impurity content among different grades.

Differences and Safety of Various Grades

Absolutely forbid the mixing of different grades of ferrous sulfate!

GradoPurity and Impurity RequirementsPrimary UseSafety
Grado industrialeLower purity, contains heavy metals such as lead, arsenico, and other chemical impurities.Trattamento dell'acqua, pigments, chemical manufacturing.Toxic. Strictly forbidden for human consumption or animal feed!
Agricultural GradeCertain limits on impurities like heavy metals.Iron fertilizer, soil amendment.Not for use in food or feed.
Grado di alimentazioneStrict control over the content of harmful substances like heavy metals and arsenic.Nutritional additive for animal feed.Safe for animals.
Food/Pharmaceutical GradeHighest purity, with harmful impurity content strictly controlled within very low safety limits.Food fortification, pharmaceutical manufacturing.Safe for humans when used in regulated dosages.

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