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CITRIC ACID, MONOHYDRATEICSC: 0704
March 1999
CAS #: 5949-29-12-Hydroxy-1,2,3-propanetricarboxylic acid monohydrate
Citric acid hydrate
EINECS #: 201-069-1

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION 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, foam, powder, carbon dioxide.   

 PREVENT DISPERSION OF DUST!  
  SYMPTOMS ACUTE HAZARDS FIRST AID
Inhalation Cough. Sore throat.  Use 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.  Wear safety spectacles.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion Burning sensation.  Do not eat, drink, or smoke during work.  Rinse mouth. Give one or two glasses of water to drink. 

SPILLAGE DISPOSAL 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. Wash away remainder with plenty of water. 

According to UN GHS Criteria

 

Transportation
UN Classification
 

STORAGE
Separated from strong bases and oxidants. 
PACKAGING
 
CITRIC ACID, MONOHYDRATE ICSC: 0704
PHYSICAL & CHEMICAL INFORMATION

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. 

Formula: C6H8O7.H2O / HOOCCH2C(OH)(COOH)CH2COOH.H2O
Molecular mass: 210.1
Decomposes at 175°C
Melting point: 135°C
Density: 1.5 g/cm³
Solubility in water, g/100ml at 20°C: 59.2
Auto-ignition temperature: 1010°C
Octanol/water partition coefficient as log Pow: -1.72  


EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body by inhalation of its aerosol and by ingestion. 

Effects of short-term exposure
The aerosol is irritating to the eyes, skin and respiratory tract. 

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

Effects of long-term or repeated exposure
 


Occupational exposure limits
 

ENVIRONMENT
 

NOTES
 

ADDITIONAL INFORMATION
  EC Classification
 

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    See Also:
       Toxicological Abbreviations