硫酸铝铵

Description

Aluminum ammonium sulfate · CAS 7784-25-0 · AlH4NO8S2. UNII DPU64XYB1D. Density: 2.45 at 20 °C.

Identification

CAS Registry Number	7784-25-0
PubChem CID	3032540
Molecular formula	AlH4NO8S2
IUPAC name	aluminum;azanium;disulfate
UNII (FDA)	DPU64XYB1D

Computed Descriptors

Molecular Weight	237.15
Hydrogen Bond Donor Count	1
Hydrogen Bond Acceptor Count	8
Rotatable Bond Count	0
Exact Mass	236.9193718
Monoisotopic Mass	236.9193718
Topological Polar Surface Area	178
Heavy Atom Count	12
Formal Charge	0
Complexity	62.2

Physical & Chemical Properties

Density	2.45 at 20 °C

Physical description & handling notes

• Dry Powder; Large Crystals
• Colorless or white odorless solid; [HSDB] White crystalline solid; Soluble in water; [MSDSonline]
• White powder
• COLORLESS HEXAGONAL CRYSTALS
• Odorless
• Strong astringent taste

Regulatory Status

Regulatory & Food Contact	FDA Substance added to food: LEAVENING AGENT, PH CONTROL AGENT, PROCESSING AID, SURFACE-FINISHING AGENT CIR / INCI: Antiperspirant
GHS notification summary	98.7% (76 / 77)

GHS Hazard Classification

GHS notification summary	98.7% (76 / 77)

Documented Uses

• Used in baking powders and dyes and to make pigment, lakes, artificial gems, vegetable glue, marble and porcelain cements, and paper; Also used for fireproofing, tanning, copper plating, and as an astringent and styptic; [Merck Index] Used in dyeing (mordant), water and sewage purification (clarifying agent), paper sizing, leather tanning, and fur treatment; (Uses for the dodecahydrate); [Hawley]
• Electroplating [Category: Plate]
• Pulp and Paper Processing [Category: Industry]
• Sewer and Wastewater Treatment [Category: Industry]
• Leather Tanning and Processing [Category: Industry]
• Fur Dressing and Dyeing [Category: Industry]

Synonyms

ALUMINUM AMMONIUM SULFATE; Monoammonium monoaluminum sulfate; Aluminum ammonium alum; Ammonium aluminum alum; Caswell No. 041B; Exsiccated ammonium alum; Alum, ammonium anhydrous; DPU64XYB1D; Aluminum ammonium bis(sulfate); DTXSID7051428; Aluminum ammonium disulfate (Al(NH4)(SO4)2); RefChem:111643; aluminum sulfate ammonium salt; DTXCID5030030; aluminium(3+) ion ammonium disulfate; 7784-25-0

Frequently Asked Questions

What are the CAS number and molecular formula of Aluminum ammonium sulfate?

CAS 7784-25-0; molecular formula AlH4NO8S2; molecular weight — g/mol.

What other names is Aluminum ammonium sulfate known by?

ALUMINUM AMMONIUM SULFATE, Monoammonium monoaluminum sulfate, Aluminum ammonium alum, Ammonium aluminum alum, Caswell No. 041B, Exsiccated ammonium alum.

What is the regulatory status of Aluminum ammonium sulfate?

Documented regulatory listings: FDA Substance added to food: LEAVENING AGENT, PH CONTROL AGENT, PROCESSING AID, SURFACE-FINISHING AGENT; CIR / INCI: Antiperspirant.

Is Aluminum ammonium sulfate classified as hazardous?

98.7% of GHS notifications report no hazard classification (76 of 77).

What are the key physical properties of Aluminum ammonium sulfate?

Density: 2.45 at 20 °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.