1,2-Propanediol
Methyl ethylene glycol
1,2-Dihydroxypropane
C3H8O2 / CH3CHOHCH2OH
Molecular mass: 76.09
ICSC # 0321
CAS # 57-55-6
RTECS # TY2000000
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Types of Hazard/ Exposure
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Acute Hazards/ Symptoms
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Prevention
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First Aid/
Fire Fighting
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FIRE
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Combustible.
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NO open flames.
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Powder, alcohol-resistant foam, water spray, carbon dioxide.
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Explosion
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Above 99°C explosive vapour/air mixtures may be formed.
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Above 99°C use a closed system, ventilation.
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In case of fire: keep drums, etc., cool by spraying with water.
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Exposure
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STRICT HYGIENE!
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•Inhalation
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Ventilation.
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Fresh air, rest.
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•Skin
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Protective gloves.
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Remove contaminated clothes.
Rinse skin with plenty of water or shower.
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•Eyes
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Redness.
Pain.
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Safety spectacles.
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First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
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•Ingestion
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Do not eat, drink, or smoke during work.
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Rinse mouth.
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Spillage Disposal
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Storage
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Packaging & Labelling
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Collect leaking and spilled liquid in sealable containers as far as possible.
Wash away spilled liquid with plenty of water.
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See Chemical Dangers.
Dry.
Well closed.
Ventilation along the floor.
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Important Data
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Physical State; Appearance:
COLOURLESS, ODOURLESS, HYGROSCOPIC, VISCOUS LIQUID
Physical Dangers:
The vapour is heavier than air.
Chemical Dangers:
Reacts with strong oxidants,
causing fire hazard.
Occupational Exposure Limits:
TLV not established.
MAK: IIb (not established but data is available) (DFG 2006).
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Routes of Exposure:
The substance can be absorbed into the body
by inhalation of its vapour and
by ingestion.
Inhalation Risk:
A harmful contamination of the air will not or will only very slowly be reached on evaporation of this substance at 20°C.
Effects of Short-Term Exposure:
The substance
irritates
the eyes.
Effects of Long-Term or Repeated Exposure:
Repeated or prolonged contact may cause skin sensitization.
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Physical
Properties
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Boiling point: 188.2°C
Melting point: -59°C
Relative density (water = 1): 1.04
Solubility in water: miscible
Vapour pressure, Pa at 20°C: 10.6
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Relative vapour density (air = 1): 2.6
Flash point: 99°C c.c.; 107°C o.c.
Auto-ignition temperature: 371°C
Explosive limits, vol% in air: 2.6-12.6
Octanol/water partition coefficient as log Pow: -0.92
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Environmental
Data
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N O T E S
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NFPA Code: H0; F1; R0;
Card has been partially updated in July 2007: see Occupational Exposure Limits.
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ADDITIONAL INFORMATION
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ICSC: 0321
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PROPYLENE GLYCOL
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(C) IPCS, CEC, 1994
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IMPORTANT LEGAL NOTICE:
Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH,
the CEC or the IPCS is responsible for the use which might be made of this
information. This card contains the collective views of the IPCS Peer Review Committee and may
not reflect in all cases all the detailed requirements included in national legislation
on the subject. The user should verify compliance of the cards with the relevant legislation
in the country of use.
The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.
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