ferric sulfate

inorganic salt

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This entry is made by Compilation and application of scientific encyclopedia entries of "Science Popularization China" to examine.

Iron sulfate is an inorganic substance with the chemical formula of Fe two (SO four ) three It is gray white or light yellow powder, easy to absorb moisture, soluble in water, slightly soluble in ethanol, and the aqueous solution is reddish brown.

Chinese name: ferric sulfate
Foreign name: ferric sulfate
Alias: Ferric sulfate
chemical formula: Fe two (SO four ) three
molecular weight: three hundred and ninety-nine point eight seven eight
CAS login number: 10028-22-5
EINECS login number: 233-072-9

Melting point: 480 ℃
Water solubility: soluble
Density: 3.097 g/cm³
Appearance: Gray white or light yellow powder
Security description: S26
Hazard symbol: Xn
Hazard description: R22；R36/37
UN dangerous goods number: nine thousand one hundred and twenty-one

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Physicochemical properties

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Melting point: 480 ℃

Density: 3.097g/cm three

Appearance: grayish white or light yellow powder, and the aqueous solution is reddish brown

Solubility: soluble in water, slightly soluble in ethanol, insoluble in acetone, ethyl acetate, concentrated sulfuric acid^[1]

Calculate chemical data

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Reference value for drainage parameter calculation (XlogP): None

Number of hydrogen bond donors: 0

Number of hydrogen bond receptors: 12

Number of rotatable chemical bonds: 0

Number of tautomers: 0

Topological molecular polar surface area: 266

Number of heavy atoms: 17

Surface charge: 0

Complexity: 62.2

Number of isotope atoms: 0

Determine the number of atomic structure centers: 0

Number of uncertain atomic structure centers: 0

Determine the number of chemical bond structure centers: 0

Number of uncertain chemical bond structure centers: 0

Number of covalent bond units: 5

toxicology data

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Acute toxicity: mouse peritoneal LC fifty ：168 mg/kg； Short term exposure will stimulate the nasal cavity, throat, skin and eyes. Excessive inhalation will damage the liver, spleen and lymphatic system, and the lungs will have spots.

purpose

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It is used as a mordant and coagulant for industrial waste water, as well as in pigments. In medicine, ferric sulfate is used as astringent and hemostatic agent.

Preparation method

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1. Add sulfuric acid to ferric hydroxide: 3H two SO four +2Fe(OH) three = Fe two (SO four ) three +6H two O。

2、 ferric oxide React with dilute sulfuric acid to generate ferric sulfate and water: Fe two O three +3H two SO four = Fe two (SO four ) three +3H two O。

3. Oxidation with nitric acid Pyrite ：2FeS two +10HNO three = Fe two (SO four ) three +H two SO four +4H two O+10NO↑

Storage method

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It shall be sealed at normal temperature and kept away from light, ventilated and dry. During storage and transportation, toxic substances shall be strictly prevented from pollution, rain and moisture.

First aid measures

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Skin contact: Take off contaminated clothes immediately, and wash with plenty of flowing water for at least 15 minutes. Get medical attention.

Eye contact: immediately lift the eyelid, and thoroughly flush it with a large amount of flowing water or physiological saline for at least 15 minutes. Get medical attention.

Inhalation: quickly leave the site to a place with fresh air. Keep the respiratory tract unobstructed. If breathing is difficult, give oxygen. If breathing stops, perform artificial respiration immediately. Get medical attention.

Ingestion: Rinse with water and drink milk or egg white. Get medical attention.