Activated alumina

Description

Activated alumina · CAS 1344-28-1 · Al2O3. UNII LMI26O6933. Boiling Point: 5396 °F at 760 mmHg (NIOSH, 2024); Boiling Point: 2977 °C; Boiling Point: 3000 °C.

Identification

CAS Registry Number	1344-28-1
PubChem CID	9989226
Molecular formula	Al2O3
IUPAC name	dialuminum;tris(oxygen(2-))
UNII (FDA)	LMI26O6933

Computed Descriptors

Molecular Weight	101.961
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	3
Rotatable Bond Count	0
Exact Mass	101.947821
Monoisotopic Mass	101.947821
Topological Polar Surface Area	3
Heavy Atom Count	5
Formal Charge	0
Complexity	0

Physical & Chemical Properties

Boiling Point	5396 °F at 760 mmHg (NIOSH, 2024)
Boiling Point	2977 °C
Boiling Point	3000 °C
Boiling Point	5396 °F
Boiling Point	2977 °C @760 [mm Hg]
Melting Point	3632 °F (NIOSH, 2024)
Melting Point	2030 °C
Melting Point	2054 °C
Melting Point	3632 °F
Melting Point	2072 °C

Physical description & handling notes

• Dry Powder; Other Solid; Liquid; Other Solid; Dry Powder; Large Crystals; Other Solid; Dry Powder; Liquid; Liquid; Dry Powder; Large Crystals; Wet Solid; Dry Powder; Large Crystals; Large Crystals; Other Solid; CBI; Dry Powder; Wet Solid; Large Crystals; Other Solid; Gas Vapor; Liquid; Other Solid; Dry Powder
• White, odorless, crystalline powder; [NIOSH]
• WHITE POWDER.
• White, odorless, crystalline powder.
• White crystalline powder
• White powder, balls or lumps or various mesh

Regulatory Status

Regulatory & Food Contact	FDA Regulatory Status of Color Additives: Drugs FDA Cumulative Estimated Daily Intake (CEDI): FCS FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS FDA Inventory of Effective Food Contact Substance (FCS) Noti: FCS Aluminum oxide (CAS Reg. No. 1344-28-1) As a component of inorganic pigments in combination with other authorized, inorganic substances wherethe FCS w
GHS notification summary	92.8% (2917 / 3142)

GHS Hazard Classification

GHS notification summary	92.8% (2917 / 3142)
Reported hazard statements	H335 (100%), H372

Documented Uses

• Used to produce aluminum; Also used as an abrasive, catalyst, absorbent (petroleum industry), filler for coatings, food additive; Also used in ceramics, glass, refractories, electrical insulators and resistors, fluxes, dental cements, and chromatographic applications; [CHEMINFO] alpha-Alumina is the main component of technical grade alumina. Corundum is natural Al2O3. Emery is an impure crystalline variety of Al2O3. [NIOSH]
• Aluminum Producing [Category: Industry]
• Petroleum Production and Refining [Category: Industry]
• Soldering [Category: Heat or Machine]
• Painting (Pigments, Binders, and Biocides) [Category: Paint]
• Cement Producing [Category: Industry]

Synonyms

ALUMINUM OXIDE; 1344-28-1; Aluminium oxide; Aloxite; gamma-Alumina; Aluminum trioxide; Dialuminum trioxide; Abramant; Abramax; Abrasit; Almite; Alundum; Saffie; delta alumina; Aluminum lake; Theta alumina

Frequently Asked Questions

What are the CAS number and molecular formula of Activated alumina?

CAS 1344-28-1; molecular formula Al2O3; molecular weight — g/mol.

What other names is Activated alumina known by?

ALUMINUM OXIDE, 1344-28-1, Aluminium oxide, Aloxite, gamma-Alumina, Aluminum trioxide.

What is the regulatory status of Activated alumina?

Documented regulatory listings: FDA Regulatory Status of Color Additives: Drugs; FDA Cumulative Estimated Daily Intake (CEDI): FCS; FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS.

Is Activated alumina classified as hazardous?

92.8% of GHS notifications report no hazard classification (2917 of 3142).

What are the key physical properties of Activated alumina?

Boiling Point: 5396 °F at 760 mmHg (NIOSH, 2024); Boiling Point: 2977 °C; Boiling Point: 3000 °C; Boiling Point: 5396 °F.

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.