硫酸铝

Description

Aluminium Sulfate · CAS 10043-01-3 · Al2(SO4)3. UNII I7T908772F. Boiling Point: 214 °F at 760 mmHg (USCG, 1999); Boiling Point: 1600; Melting Point: 3.9 °F (USCG, 1999).

Identification

CAS Registry Number	10043-01-3
PubChem CID	24850
Molecular formula	Al2(SO4)3
IUPAC name	dialuminum;trisulfate
UNII (FDA)	I7T908772F

Computed Descriptors

Molecular Weight	342.2
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	12
Rotatable Bond Count	0
Exact Mass	341.818266
Monoisotopic Mass	341.818266
Topological Polar Surface Area	266
Heavy Atom Count	17
Formal Charge	0
Complexity	62.2

Physical & Chemical Properties

Boiling Point	214 °F at 760 mmHg (USCG, 1999)
Boiling Point	1600
Melting Point	3.9 °F (USCG, 1999)
Melting Point	700
Melting Point	770 °C
Solubility	86.9
Density	1.61
Density	2.71 g/cm³
Density	2.672 @25 °C
Decomposition	770 °C

Physical description & handling notes

• Aluminum sulfate, solution appears as a clear colorless aqueous solution. Noncombustible. Nontoxic. Density 10.9 lb / gal. Used in paper making, in firefighting foams, as a fireproofing agent, in sewage treatment and water purification.
• Dry Powder; Other Solid; Large Crystals; Liquid; Liquid; Dry Powder; Liquid
• White powder, shining plates or crystalline fragments
• White solid; [Merck Index] Hygroscopic; [CHEMINFO] White powder; [MSDSonline]
• ODOURLESS WHITE HYGROSCOPIC LUSTROUS CRYSTALS OR POWDER.
• White, lustrous crystals, pieces, granules, or powder

Regulatory Status

Regulatory & Food Contact	FDA Substance added to food: COLOR OR COLORING ADJUNCT, EMULSIFIER OR EMULSIFIER SALT, FIRMING AGENT, PH CONT FIRMING_AGENT: Food Additives COLOR OR COLORING ADJUNCT, EMULSIFIER OR EMULSIFIER SALT, FIRMING AGENT, PH CONTROL AGENT, PROCESSING AID, SEQ ALUMINIUM SULFATE (anhydrous) NO ADI ALLOCATED TRS 631-JECFA 22/21
GHS notification summary	4.4% (50 / 1124)

GHS Hazard Classification

GHS notification summary	4.4% (50 / 1124)
Reported hazard statements	H290 (41.1%), H318 (91.5%), H319

Documented Uses

• Petroleum Production and Refining [Category: Industry]
• Pulp and Paper Processing [Category: Industry]
• Sewer and Wastewater Treatment [Category: Industry]
• Leather Tanning and Processing [Category: Industry]
• Textiles (Printing, Dyeing, or Finishing) [Category: Industry]
• An early step in the treatment of raw water ... Either aluminum sulfate or ferric chloride proved a good primary flocculant for virus removal.

Synonyms

ALUMINUM SULFATE; 10043-01-3; Aluminium sulfate; Dialuminum trisulfate; Aluminum sulfate anhydrous; Aluminium sulphate; Dialuminum sulfate; Aluminum alum; Sulfuric acid, aluminum salt; Filter Alum; Pickle Alum; Papermaker's Alum; Sulfuric acid, aluminum salt (3:2); Aluminum sulfate (2:3); Pearl Alum; Aluminum trisulfate

Frequently Asked Questions

What are the CAS number and molecular formula of Aluminium Sulfate?

CAS 10043-01-3; molecular formula Al2(SO4)3; molecular weight — g/mol.

What other names is Aluminium Sulfate known by?

ALUMINUM SULFATE, 10043-01-3, Aluminium sulfate, Dialuminum trisulfate, Aluminum sulfate anhydrous, Aluminium sulphate.

What is the regulatory status of Aluminium Sulfate?

Documented regulatory listings: FDA Substance added to food: COLOR OR COLORING ADJUNCT, EMULSIFIER OR EMULSIFIER SALT, FIRMING AGENT, PH CONT; FIRMING_AGENT: Food Additives; COLOR OR COLORING ADJUNCT, EMULSIFIER OR EMULSIFIER SALT, FIRMING AGENT, PH CONTROL AGENT, PROCESSING AID, SEQ.

Is Aluminium Sulfate classified as hazardous?

4.4% of GHS notifications report no hazard classification (50 of 1124).

What are the key physical properties of Aluminium Sulfate?

Boiling Point: 214 °F at 760 mmHg (USCG, 1999); Boiling Point: 1600; Melting Point: 3.9 °F (USCG, 1999); Melting Point: 700.

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.