Combustible. Finely dispersed particles form explosive mixtures in air.
NO open flames. Closed system, dust explosion-proof electrical equipment and lighting. Prevent deposition of dust.
Use water spray, carbon dioxide, powder. In case of fire: keep drums, etc., cool by spraying with water.
PREVENT DISPERSION OF DUST!
Cough. Sore throat. See Ingestion.
Use local exhaust or breathing protection.
Fresh air, rest. Refer for medical attention.
Remove contaminated clothes. Rinse and then wash skin with water and soap.
Wear 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 refer for medical attention.
Nausea. Vomiting. Ringing in the ears.
Do not eat, drink, or smoke during work.
Rinse mouth. Induce vomiting (ONLY IN CONSCIOUS PERSONS!). Refer for medical attention .
CLASSIFICATION & LABELLING
Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Sweep spilled substance into covered containers. If appropriate, moisten first to prevent dusting.
According to UN GHS Criteria
Transportation UN Classification
Separated from strong oxidants.
PHYSICAL & CHEMICAL INFORMATION
Physical State; Appearance NEEDLE-SHAPED CRYSTALS OR COLOURLESS CRYSTALLINE POWDER.
Physical dangers Dust explosion possible if in powder or granular form, mixed with air.
Chemical dangers The solution in water is a weak acid. Reacts with strong oxidants.
Formula: C7H6O3 / HOC6H4COOH
Molecular mass: 138.1
Sublimation point: 76°C Melting point: 159°C Relative density (water = 1): 1.4 Solubility in water, g/100ml at 20°C: 0.2 Vapour pressure, Pa at 130°C: 114 Relative vapour density (air = 1): 4.8 Flash point: 157°C Auto-ignition temperature: 540°C Octanol/water partition coefficient as log Pow: 2.2
EXPOSURE & HEALTH EFFECTS
Routes of exposure The substance can be absorbed into the body by inhalation and by ingestion.
Effects of short-term exposure The substance is irritating to the eyes, skin and respiratory tract. The substance may cause effects on the central nervous system and acid-base balance in the body. This may result in delirium and tremors.
Inhalation risk Evaporation at 20°C is negligible; a nuisance-causing concentration of airborne particles can, however, be reached quickly when dispersed.
Effects of long-term or repeated exposure Repeated or prolonged contact with skin may cause dermatitis.
OCCUPATIONAL EXPOSURE LIMITS
Volatility becomes noticeable above 50-60°C. Anyone who has shown aspirin sensitization should never come in contact with this substance.
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