NIOSH Publication No. 2005-151:

NIOSH Pocket Guide to Chemical Hazards

September 2005

alpha-Alumina

CAS
1344-28-1

Al2O3

RTECS
BD1200000
Synonyms & Trade Names

Alumina, Aluminum oxide, Aluminum trioxide [Note: alpha-Alumina is the main component of technical grade alumina. Corundum is natural Al2O3. Emery is an impure crystalline variety of Al2O3.]
DOT ID & Guide

Exposure
Limits

NIOSH REL: See Appendix D
OSHA PEL: TWA 15 mg/m3 (total) TWA 5 mg/m3 (resp)
IDLH
N.D. See: IDLH INDEX
Conversion
Physical Description
White, odorless, crystalline powder.
MW: 101.9
BP: 5396°F
MLT: 3632°F
Sol: Insoluble
VP: 0 mmHg (approx)
IP: NA

Sp.Gr: 4.0
Fl.P: NA
UEL: NA
LEL: NA

Noncombustible solid, but dusts may form explosive mixtures in air.
Incompatibilities & Reactivities

Chlorine trifluoride, hot chlorinated rubber, acids, oxidizers [Note: Hydrogen gas may be formed when finely divided iron contacts moisture during crushing & milling operations.]
Measurement Methods
NIOSH 0500, 0600; OSHA ID109SG, ID198SG
See: NMAM or OSHA Methods
Personal Protection & Sanitation
(See protection)
Skin: No recommendation
Eyes: No recommendation
Wash skin: No recommendation
Remove: No recommendation
Change: No recommendation

First Aid
(See procedures)
Eye: Irrigate immediately
Skin: Blot/brush away
Breathing: Fresh air
Swallow: Medical attention immediately
Respirator Recommendations
Not available.
Important additional information about respirator selection
Exposure Routes
Irritation eyes, skin, respiratory system
Symptoms
irritation eyes, skin, respiratory system
Target Organs
Eyes, skin, respiratory system
See also: INTRODUCTION   See ICSC CARD: 0351