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CITRIC ACID, MONOHYDRATE ICSC: 0704
Date of Peer Review: March 1999

2-Hydroxy-1,2,3-propanetricarboxylic acid monohydrate
Citric acid hydrate
CAS # 5949-29-1 C6H8O7.H2O / HOOCCH2C(OH)(COOH)CH2COOH.H2O
RTECS # GE7810000 Molecular mass: 210.1
UN #
EC Index #
TYPES OF HAZARD / EXPOSURE ACUTE HAZARDS / SYMPTOMS PREVENTION FIRST AID / FIRE FIGHTING
FIRE Combustible.
NO open flames.
Water spray, foam, powder, carbon dioxide.
EXPLOSION Finely dispersed particles form explosive mixtures in air.
Prevent deposition of dust; closed system, dust explosion-proof electrical equipment and lighting.

EXPOSURE
PREVENT DISPERSION OF DUST!

Inhalation Cough. Sore throat.
Local exhaust or breathing protection.
Fresh air, rest.
Skin Redness.
Protective gloves.
Remove contaminated clothes. Rinse skin with plenty of water or shower.
Eyes Redness. Pain.
Safety spectacles.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Ingestion Burning sensation.
Do not eat, drink, or smoke during work.
Rinse mouth. Give plenty of water to drink.
SPILLAGE DISPOSAL PACKAGING & LABELLING
Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting. Wash away remainder with plenty of water. Personal protection: P2 filter respirator for harmful particles.
EU Classification
UN Classification

EMERGENCY RESPONSE STORAGE

Separated from strong bases, oxidants.
IPCS
International
Programme on
Chemical Safety
Prepared in the context of cooperation between the International Programme on Chemical Safety and the Commission of the European Communities IPCS, CEC 2005

SEE IMPORTANT INFORMATION ON BACK
CITRIC ACID, MONOHYDRATE ICSC: 0704
IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
SLIGHTLY DELIQUESCENT WHITE CRYSTALS

PHYSICAL DANGERS:
Dust explosion possible if in powder or granular form, mixed with air.

CHEMICAL DANGERS:
The solution in water is a weak acid. Attacks copper, zinc, aluminium and their alloys.

OCCUPATIONAL EXPOSURE LIMITS:
TLV not established.
MAK: IIb (not established but data is available); (DFG 2005).
ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation of its aerosol and by ingestion.

INHALATION RISK:
No indication can be given about the rate in which a harmful concentration in the air is reached on evaporation of this substance at 20C.

EFFECTS OF SHORT-TERM EXPOSURE:
The aerosol is irritating to the eyes, the skin and the respiratory tract.

PHYSICAL PROPERTIES
Decomposes below boiling point at 175C
Melting point: 135C
Density: 1.5 g/cm
Solubility in water, g/100 ml at 20C: 59.2
Auto-ignition temperature: 1010C
Octanol/water partition coefficient as log Pow: -1.72
ENVIRONMENTAL DATA

NOTES
Card has been partly updated in October 2005. See section Occupational Exposure Limits.
ADDITIONAL INFORMATION


LEGAL NOTICE Neither the CEC nor 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
IPCS, CEC 2005