金刚砂

Description

EMERY · CAS 12415-34-8 · Al2O3. Vapor Pressure: 0 mmHg (approx).

Identification

CAS Registry Number	12415-34-8
PubChem CID	14769
Molecular formula	Al2O3
IUPAC name	oxo(oxoalumanyloxy)alumane

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	43.4
Heavy Atom Count	5
Formal Charge	0
Complexity	34.2

Physical & Chemical Properties

Vapor Pressure	0 mmHg (approx)

Physical description & handling notes

• Dry Powder; Large Crystals
• Odorless, white, crystalline powder; [Note: Emery is an impure variety of Al2O3 which may contain small impurities of iron, magnesium & silica. Corundum is natural Al2O3. See also CAS #1302-74-5 (corundum)]
• Odorless, white, crystalline powder.
• decomposes

GHS Hazard Classification

Reported hazard statements	H319, H335, H372

Documented Uses

• Emery is an impure form of corundum (aluminum oxide). Emery is used in abrasive emery cloth, wheels, and belts. Fine emory is used in lens grinding and lapidary work. [ACGIH] Emery is an impure variety of Al2O3 which may contain small impurities of iron, magnesium, and silica. Corundum is natural Al2O3. [NIOSH]
• Abrasive Blasting [Category: Clean]
• Aluminium oxide's most significant use is in the production of aluminium metal, although it is also used as an abrasive due to its hardness and as a refractory material due to its high melting point. (L758)

Synonyms

Corundum; 1302-74-5; Electrocorundum; Korund; MP 1 (Refractory); Dural F 30; Corindon; Saphir; Rubis; RefChem:579256; Emery; oxo(oxoalumanyloxy)alumane; Sapphire (Al2O3); Corundum (Al2O3); 12415-34-8; Aluminum oxide, alpha

Frequently Asked Questions

What are the CAS number and molecular formula of EMERY?

CAS 12415-34-8; molecular formula Al2O3; molecular weight — g/mol.

What other names is EMERY known by?

Corundum, 1302-74-5, Electrocorundum, Korund, MP 1 (Refractory), Dural F 30.

Is EMERY classified as hazardous?

Hazard statements reported: H319, H335, H372.

What are the key physical properties of EMERY?

Vapor Pressure: 0 mmHg (approx).

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.