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alpha-Alumina

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Synonyms & Trade Names
Alumina, Aluminum oxide [a-Alumina], Aluminum trioxide [a-Alumina] [Note: α-Alumina is the main component of technical grade alumina. Corundum is natural Al2O3. Emery is an impure crystalline variety of Al2O3.]
CAS No.
1344-28-1
RTECS No.
BD1200000
DOT ID & Guide
Formula
Al₂O₃
Conversion
IDLH
N.D.
See: IDLH INDEX
Exposure Limits
NIOSH REL
See Appendix D
OSHA PEL
TWA 15 mg/m3 (total) TWA 5 mg/m3 (resp) See Appendix G
Measurement Methods
NIOSH 0500 , 0600;
OSHA ID109SG , ID198SG
See: NMAM or OSHA Methods
Physical Description
White, odorless, crystalline powder.
Molecular Weight
101.9
Boiling Point
5396°F
Melting Point
3632°F
Solubility
Insoluble
Vapor Pressure
0 mmHg (approx)
Ionization Potential
NA
Specific Gravity
4.0
Flash Point
NA
Upper Explosive Limit
NA
Lower Explosive Limit
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.]
Exposure Routes
inhalation, ingestion, skin and/or eye contact
Symptoms
irritation eyes, skin, respiratory system
Target Organs
Eyes, skin, respiratory system
Personal Protection/Sanitation
(See protection codes)
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

See also
INTRODUCTION   ICSC CARD: 0351
Page last reviewed: October 30, 2019
Content source: National Institute for Occupational Safety and Health