TRIMELLITIC ANHYDRIDE 0345
October 2005
CAS No: 552-30-7 1,2,4-Benzenetricarboxylic anhydride
1,3-Dihydro-1,3-dioxo-5-isobenzofurancarboxylic acid
RTECS No: DC2050000
C9H4O5
EC No: 607-097-00-4
Molecular mass: 192.2
TYPES OF
ACUTE HAZARDS/SYMPTOMS PREVENTION FIRST AID/FIRE FIGHTING
HAZARD/
EXPOSURE
FIRE Combustible. NO open flames. Water spray, powder.
EXPLOSION Finely dispersed particles form Prevent build-up of electrostatic
explosive mixtures in air. charges (e.g., by grounding). Prevent
deposition of dust; closed system,
dust explosion-proof electrical
equipment and lighting.
EXPOSURE PREVENT DISPERSION OF DUST!
STRICT HYGIENE!
Inhalation Cough. Blood stained sputum. Local exhaust or breathing protection. Fresh air, rest. Refer for medical
Headache. Nausea. Shortness of attention.
breath. Wheezing. Symptoms may
be delayed (see Notes).
Skin Redness. Pain. Protective gloves. Remove contaminated clothes.
Rinse skin with plenty of water or
shower.
Eyes Redness. Pain. Safety goggles or eye protection in First rinse with plenty of water for
combination with breathing several minutes (remove contact
protection. lenses if easily possible), then take to
a doctor.
Ingestion Nausea. Abdominal pain. Burning Do not eat, drink, or smoke during Rinse mouth. Give plenty of water to
sensation. Vomiting. Diarrhoea. work. drink. Refer for medical attention.
SPILLAGE DISPOSAL PACKAGING & LABELLING
Personal protection: P3 filter respirator for toxic Xn Symbol
particles. Sweep spilled substance into containers; if R: 37-41-42/43
appropriate, moisten first to prevent dusting. Carefully S: (2-)22-26-36/37/39
collect remainder.
EMERGENCY RESPONSE SAFE STORAGE
Dry. Separated from bases and strong oxidants. Ventilation along the floor.
Prepared in the context of cooperation between the International
IPCS Programme on Chemical Safety and the European Commission 漏
IPCS 2005
International
Programme on
SEE IMPORTANT INFORMATION ON THE BACK.
Chemical Safety
0345 TRIMELLITIC ANHYDRIDE
IMPORTANT DATA
Physical State; Appearance Routes of exposure
COLOURLESS CRYSTALS OR POWDER The substance can be absorbed into the body by inhalation and
by ingestion.
Physical dangers
Inhalation risk
Dust explosion possible if in powder or granular form, mixed with
air. If dry, it can be charged electrostatically by swirling, pneumatic A harmful concentration of airborne particles can be reached
transport, pouring, etc. quickly when dispersed.
Chemical dangers Effects of short-term exposure
Reacts violently with bases and oxidants. Reacts slowly with The substance is irritating to the skin, the respiratory tract and is
water to form trimellitic acid. severely irritating to the eyes. Inhalation of dust may cause
asthma-like reactions.
Occupational exposure limits
TLV: 0.04 mg/m 3 (Ceiling value); (ACGIH 2005). Effects of long-term or repeated exposure
MAK: 0.04 mg/m 3; sensitization of respiratory tract (Sa); Peak Repeated or prolonged inhalation exposure may cause asthma.
limitation category: I(1); (DFG 2005). The substance may cause allergic reactions with flu-like
symptoms and 'pulmonary disease-anaemia syndrome'.
PHYSICAL PROPERTIES
Boiling point at 1.87kPa: 240-245/C Vapour pressure, kPa at 25/C: negligible
Melting point: 161-163.5/C Relative vapour density (air = 1): 6.6
Solubility in water: reaction Flash point: 227/C o.c.
ENVIRONMENTAL DATA
NOTES
The symptoms of allergic reactions including asthma do not become manifest until 4 to 12 hours.
Anyone who has shown symptoms of asthma due to this substance should avoid all further contact.
The occupational exposure limit value should not be exceeded during any part of the working exposure.
Do NOT take working clothes home.
ADDITIONAL INFORMATION
Neither the EC nor the IPCS nor any person acting on behalf of the EC or the IPCS is responsible
LEGAL NOTICE for the use which might be made of this information
漏IPCS 2005
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