Ammonium Iron(II) Sulfate Hexahydrate (Mohr’s Salt)

Basic Information

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CAS Number

7783-85-9

Molecular Formula

FeH6NO5S

Molecular Weight

187.96 g/mol

EINECS

616-518-0

Chemical Classification

Basic Chemical Raw Materials Organic Chemicals Carboxylic Acids

Basic Chemical Raw Materials Organic Chemicals Amines

Water Treatment Chemicals Coagulants and Flocculants Inorganic Coagulants

Basic Physical Properties

Melting Point

100 °C (dec.)

Density

1,864 g/cm3

Water Solubility

269 g/L (20 ºC)

Vapor Density

> 1 (vs air)

Odor

无味

SMILES

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[O-]S(=O)(=O)[O-].O.[Fe+].[NH4+]

InChI

1S/Fe.2H3N.2H2O4S.6H2O/c;;;2*1-5(2,3)4;;;;;;/h;2*1H3;2*(H2,1,2,3,4);6*1H2/q+2;;;;;;;;;;/p-2

InChIKey

MQLVWQSVRZVNIP-UHFFFAOYSA-L

LogP

0.43030

Complexity

62.2

Safety Information

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GHS Hazard Pictograms

H315

H319

H335

Hazard Statement

H315 Causes skin irritation
Skin corrosion/irritation

H319 Causes serious eye irritation
Serious eye damage/eye irritation

H335 May cause respiratory irritation
Specific target organ toxicity, single exposure; Respiratory tract irritation

Stability

稳定的。与硫酸不相容。

Sensitiveness

Air & Light Sensitive

Toxicity

LD50 orally in Rabbit: 3250 mg/kg

Synonyms & References

English

FERROUS AMMONIUM SULFATE HEXAHYDRATE*SIG MAULTRA
AMMONIUM IRON(II) SULFATE HEXAHYDRATE, 9 9.997%
AMMONIUM IRON(II) SULFATE HEXAHYDRATE, 9 9%, A.C.S. REAGENT
AMMONIUM IRON(II) SULFATE HEXAHYDRATE, REAGENTPLUS TM, >= 99%
AMMONIUM IRON(II) SULFATE-6-HYDRATE EXTR A PURE
AMMONIUM IRON(II) SULFATE-6-HYDRATE R. G., REAG. ISO, RE
AmmoniumIron(II)SulfateHexahydrateReagentAcs(Crystals)
FerrousAmmmoniumSulfate,Hexahydrate
Ammonium iron (II) sulfate hexahydrate
Ferrous ammonium sulfate
Mohrs salt
Ammonium iron (II) sulfate
ammonium ferrous sulfate hexahydrate
Ammonium Iron(II) Sulphate
Ammoniumironsulfatehexahydrate
FERROUS AMMONIUM SULPHATE
Ammonium ferrous salts
Ferrous ammonium salts
Ammonium iron(Ⅱ) sulfate hexahydrate
Ferrous ammonium sulfate hexahydrate
ACS
Ferrous aluM
Mohr'salt
Ammonium iron(II) sulfate hexahydrate

MDL Number

MFCD00051039

EC Number

616-518-0

Customs Code

28429090

FAQ

What is Ammonium Iron(II) Sulfate Hexahydrate (CAS: 7783-85-9)?

Ammonium Iron(II) Sulfate Hexahydrate, also known as Mohr’s Salt, is a crystalline double salt with the chemical formula (NH4)2Fe(SO4)2·6H2O. It is commonly used as a stable source of ferrous ions (Fe²⁺) in chemical reactions. The compound is blue-green in color, highly soluble in water, and contains six water molecules per formula unit. CAS 7783-85-9 identifies this specific hydrate form.

What are the main uses of Ammonium Iron(II) Sulfate Hexahydrate (CAS: 7783-85-9)?

Ammonium Iron(II) Sulfate Hexahydrate (Mohr’s Salt) is widely used in laboratories for qualitative and quantitative analysis, such as in titration experiments. It serves as a precursor in the synthesis of other iron compounds and is employed in electroplating, dyeing, and as a catalyst. Additionally, it is used in pharmaceuticals for iron supplementation and in food industry applications for nutrient fortification. Its stability and solubility make it a valuable reagent in chemical research.

Is Ammonium Iron(II) Sulfate Hexahydrate (CAS: 7783-85-9) safe?

Ammonium Iron(II) Sulfate Hexahydrate (Mohr’s Salt) is generally considered safe when handled properly. However, it may cause mild skin or eye irritation. Safety guidelines recommend using gloves, safety goggles, and ensuring adequate ventilation during handling. While it is not classified as highly toxic, adherence to standard chemical safety protocols is essential to minimize risks. The compound complies with regulatory safety standards for laboratory and industrial use.

How should Ammonium Iron(II) Sulfate Hexahydrate (CAS: 7783-85-9) be stored?

Ammonium Iron(II) Sulfate Hexahydrate (Mohr’s Salt) should be stored in a cool, dry place away from moisture and direct light. It requires airtight, moisture-proof containers to maintain its crystalline structure and prevent decomposition. Storage conditions should be below 25°C to ensure stability. Avoid exposure to high humidity or heat, and keep it in a well-ventilated area to prevent inhalation of dust. Proper labeling is also crucial for safe handling.