CITRIC ACID 0855
March 1998
2-Hydroxy-1,2,3-propanetricarboxylic acid
CAS No: 77-92-9
beta-Hydroxytricarballylic acid
RTECS No: GE7350000
Anhydrous citric acid
UN No:
C6H8O7 / CH2COOH-C(OH)COOH-CH2COOH
EC No:
Molecular mass: 192.1
TYPES OF
ACUTE HAZARDS/SYMPTOMS PREVENTION FIRST AID/FIRE FIGHTING
HAZARD/
EXPOSURE
Combustible. NO open flames. Powder, water spray, foam, carbon
FIRE
dioxide.
Finely dispersed particles form Prevent deposition of dust; closed
EXPLOSION
explosive mixtures in air. system, dust explosion-proof
electrical equipment and lighting.
EXPOSURE PREVENT DISPERSION OF DUST!
Cough. Shortness of breath. Sore Ventilation (not if powder). Fresh air, rest. Refer for medical
Inhalation
throat. attention.
Redness. Protective gloves. Rinse skin with plenty of water or
Skin
shower. Refer for medical attention.
Redness. Pain. Safety goggles. First rinse with plenty of water for
Eyes
several minutes (remove contact
lenses if easily possible), then take
to a doctor.
Abdominal pain. Sore throat. Do not eat, drink, or smoke during Rinse mouth. Refer for medical
Ingestion
work. attention.
SPILLAGE DISPOSAL PACKAGING & LABELLING
Sweep spilled substance into containers; if Symbol
appropriate, moisten first to prevent dusting. Wash R:
away remainder with plenty of water (extra personal S:
protection: P2 filter respirator for harmful particles).
EMERGENCY RESPONSE STORAGE
Separated from strong oxidants, strong bases, metal nitrates and metals.
Dry.
Prepared in the context of cooperation between the International
IPCS Programme on Chemical Safety and the European Commission
International 漏 IPCS 1999
Programme on
Chemical Safety SEE IMPORTANT INFORMATION ON THE BACK.
0855 CITRIC ACID
IMPORTANT DATA
Physical State; Appearance Routes of Exposure
COLOURLESS CRYSTALS 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. Evaporation at 20C is negligible; a nuisance-causing
concentration of airborne particles can, however, be reached
quickly when dispersed.
Chemical Dangers
The substance decomposes on heating above 175C. The
Effects of Short-term Exposure
solution in water is a medium strong acid. Reacts with oxidants
and bases. Attacks metal. The substance irritates the eyes, the skin and the respiratory
tract.
Occupational Exposure Limits
Effects of Long-term or Repeated Exposure
TLV not established. MAK not established.
The substance may have effects on the teeth, resulting in
erosion.
PHYSICAL PROPERTIES
Decomposes below boiling point at 175C Flash point: 100C
Melting point: 153C Explosive limits, vol% in air: 0.28-2.29
Solubility in water, g/100 ml at 20C: 59 Octanol/water partition coefficient as log Pow: -1.7
ENVIRONMENTAL DATA
NOTES
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 1999
|