International Chemical Safety Cards ALUMINUM OXIDE ICSC: 0351 ALUMINUM OXIDE Alpha-Aluminum oxide Alumina Aluminum trioxide Al2O3 Molecular mass: 101.9 CAS # 1344-28-1 RTECS # BD1200000 ICSC # 0351 TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Not combustible. In case of fire in the surroundings: all extinguishing agents allowed. EXPLOSION   EXPOSURE PREVENT DISPERSION OF DUST! INHALATION Cough. Local exhaust or breathing protection. Fresh air, rest. SKIN EYES Redness. Safety goggles or eye protection in combination with breathing protection. First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor. INGESTION SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Sweep spilled substance into containers. Wash away remainder with plenty of water. Sweep gently to avoid raising dust (extra personal protection: P1 filter respirator for inert particles). SEE IMPORTANT INFORMATION ON BACK ICSC: 0351 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities © IPCS CEC 1993

International Chemical Safety Cards ALUMINUM OXIDE ICSC: 0351 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: WHITE POWDER. PHYSICAL DANGERS: CHEMICAL DANGERS: OCCUPATIONAL EXPOSURE LIMITS (OELs): TLV (as Al): ppm; 10 mg/m3 total dust containing no asbestos and <1% crystalline silica (as TWA) (ACGIH 1993-1994). MAK: ppm; 6 mg/m3; a (1991). ROUTES OF EXPOSURE: The substance can be absorbed into the body by inhalation of its aerosol. INHALATION RISK: Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly. EFFECTS OF SHORT-TERM EXPOSURE: Inhalation of high concentrations of dusts of this substance may cause eyes and upper respiratory tract irritation. EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: PHYSICAL PROPERTIES Boiling point: 2980°C Melting point: 2072°C Relative density (water = 1): 4.0 Solubility in water: insoluble Vapour pressure, kPa at 2158°C: 0.1

ENVIRONMENTAL DATA
NOTES
There is a different and hard crystalline form of aluminum oxide which occurs abundantly in nature under the name corundum (1302-74-5). Other melting points: 2015°C (approx.) (corundum).

ADDITIONAL INFORMATION
ICSC: 0351 ALUMINUM OXIDE © IPCS, CEC, 1993

IMPORTANT LEGAL NOTICE: Neither the CEC or the IPCS nor any person acting on behalf of the CEC or the IPCS is responsible for the use which might be made of this information. This card contains the collective views of the IPCS Peer Review Committee and may not reflect in all cases all the detailed requirements included in national legislation on the subject. The user should verify compliance of the cards with the relevant legislation in the country of use.