sulfate ອາຫານ

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Ferrous sulfate

Food grade ferrous sulfate

Chemical name: Ferrous sulfate

CAS:7720-78-7

ສູດໂມເລກຸນ: FeSO4·7H2O (heptahydrate), FeSO4·nH2O (anhydrous)

ນ້ໍາຫນັກໂມເລກຸນ: 278.01 (heptahydrate), 169.92/223.92 (anhydrous)

ຄຸນສົມບັດ: Blue-green crystals or granules, ບໍ່ມີກິ່ນ, 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.

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

Indicator Nameຂໍ້ມູນຈໍາເພາະ
ຮູບລັກສະນະGray or bluish-green crystalline granules or powder
Ferrous Sulfate, %Dried: 86-89
Heptahydrate: 99.5-104.5
ອາເຊນິກ (ເປັນ), ppm≤ 3
ນຳ (ປ), ppm≤ 2
Mercury (ຮຕ), ppm≤ 1
Acid Insoluble Matter, % (Dried)≤ 0.05

ຄໍາຮ້ອງສະຫມັກ: ໃນອຸດສະຫະກໍາອາຫານ, it is used as an iron fortifier, color developer, and processing aid, ແລະອື່ນໆ.

ການຫຸ້ມຫໍ່: 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, ​ຢາ, and food. According to its purity and application, it can be classified into industrial grade, agricultural grade, ເກຣດອາຫານ, 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!

ເກຣດPurity and Impurity RequirementsPrimary Useຄວາມປອດໄພ
ເກຣດອຸດສາຫະກໍາLower purity, contains heavy metals such as lead, ສານຫນູ, and other chemical impurities.Water treatment, 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.
ເກຣດອາຫານStrict 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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