Ferrous Ammonium Sulfate

Description

Ferrous Ammonium Sulfate · CAS 10045-89-3 · FeH8N2O8S2. UNII 9Q764AYJ9G. Density: 1.865 @25 °C.

Identification

CAS Registry Number	10045-89-3
PubChem CID	24863
Molecular formula	FeH8N2O8S2
IUPAC name	diazanium;iron(2+);disulfate
UNII (FDA)	9Q764AYJ9G

Computed Descriptors

Molecular Weight	284.1
Hydrogen Bond Donor Count	2
Hydrogen Bond Acceptor Count	8
Rotatable Bond Count	0
Exact Mass	283.907143
Monoisotopic Mass	283.907143
Topological Polar Surface Area	179
Heavy Atom Count	13
Formal Charge	0
Complexity	62.2

Physical & Chemical Properties

Density	1.865 @25 °C

Physical description & handling notes

• Ferrous ammonium sulfate appears as a light green crystalline solid. The primary hazard is the threat to the environment. Immediate steps should be taken to limit its spread to the environment. It is used in medicine, chemical analysis and metallurgy.
• Light green crystals, deliquescent and soluble in water; [CAMEO]
• 26.9 G SOL IN 100 CC WATER @ 20 °C; 73 G SOL IN 100 CC WATER @ 80 °C; INSOL IN ETHANOL. /FERROUS AMMONIUM SULFATE HEXAHYDRATE/
• 1.86 at 68 °F (USCG, 1999) - Denser than water; will sink
• Pale blue-green crystals or crystalline powder. Efforesces. Density: 1.86 at 20 °C/4 °C. /Ferrous ammonium sulfate hexahydrate/
• Slowly oxidizes in air. /Ferrous ammonium sulfate hexahydrate/

Regulatory Status

Regulatory & Food Contact	FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS
GHS notification summary	98.3% (171 / 174)

GHS Hazard Classification

GHS notification summary	98.3% (171 / 174)

Documented Uses

• Used in medicine, metallurgy, and chemical analysis; [CAMEO] Also used in photography, iron-plating baths, and as a polymerization catalyst; Approved for use in the production of cellophane for food packaging; [HSDB]
• Photographic Processing [Category: Other]
• Metal Extraction and Refining [Category: Industry]
• In photography; as analytical standard; as polymerization catalyst; in dosimeters. /Ferrous ammonium sulfate hexahydrate/
• Analytical chemistry; metallurgy. /Ferrous ammonium hexahydrate/
• For more Uses (Complete) data for FERROUS AMMONIUM SULFATE (6 total), please visit the HSDB record page.

Synonyms

FERROUS AMMONIUM SULFATE; Mohr's salt; Ferrous ammonium sulphate; Ferroammonsulfat; Ferrous diammonium disulfate; Diammonium iron sulfate; Mohr'sches salz; Diammonium ferrous sulfate; Sulfuric acid, ammonium iron(2+) salt (2:2:1); Ammonium iron sulfate (2:2:1); 9Q764AYJ9G; ferrous ammonium sulfate anhydrous; ferrous ammonium sulfate (anhydrous); DTXSID4041028; CHEBI:76243; Ferrous ammonium sulfate (Fe(NH4)2(SO4)2)

Frequently Asked Questions

What are the CAS number and molecular formula of Ferrous Ammonium Sulfate?

CAS 10045-89-3; molecular formula FeH8N2O8S2; molecular weight — g/mol.

What other names is Ferrous Ammonium Sulfate known by?

FERROUS AMMONIUM SULFATE, Mohr's salt, Ferrous ammonium sulphate, Ferroammonsulfat, Ferrous diammonium disulfate, Diammonium iron sulfate.

What is the regulatory status of Ferrous Ammonium Sulfate?

Documented regulatory listings: FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS.

Is Ferrous Ammonium Sulfate classified as hazardous?

98.3% of GHS notifications report no hazard classification (171 of 174).

What are the key physical properties of Ferrous Ammonium Sulfate?

Density: 1.865 @25 °C.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.