Phosphorous acid, triethyl ester
C6H15O3P
Molecular mass: 166.2
ICSC # 0684
CAS # 122-52-1
RTECS # TH1130000
UN # 2323
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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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Flammable.
Gives off irritating or toxic fumes (or gases) in a fire.
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NO open flames, NO sparks, and NO smoking.
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Powder
,
foam
,
carbon dioxide
.
NO hydrous agents.
NO water.
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Explosion
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Above 54°C explosive vapour/air mixtures may be formed.
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Above 54°C use a closed system, ventilation, and explosion-proof electrical equipment.
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In case of fire: cool drums, etc., by spraying with water but avoid contact of the substance with water.
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Exposure
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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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Redness.
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Protective gloves.
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Remove contaminated clothes.
Rinse skin with plenty of water or shower.
Refer for medical attention.
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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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Abdominal pain.
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Do not eat, drink, or smoke during work.
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Rinse mouth.
Refer for medical attention.
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Spillage Disposal
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Storage
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Packaging & Labelling
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Ventilation.
Collect leaking and spilled liquid in sealable containers as far as possible.
Absorb remaining liquid in sand or inert absorbent and remove to safe place
(extra personal protection: filter respirator for organic gases and vapours).
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Fireproof.
Dry.
Separated from
acids,
strong oxidants.
See Chemical Dangers.
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UN Hazard Class: 3
UN Packing Group: III
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Important Data
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Physical State; Appearance:
COLOURLESS LIQUID
Physical Dangers:
Chemical Dangers:
The substance decomposes
on heating or
on burning
producing toxic fumes including phosphorous oxides.
Reacts with water, acids and strong oxidants,
causing fire and explosion hazard.
Occupational Exposure Limits:
TLV not established.
MAK not established.
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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:
No indication can be given about the rate in which a harmful concentration in the air is reached on evaporation of this substance at 20°C.
Effects of Short-Term Exposure:
The substance and
the vapour
irritates
the eyes and
the skin.
Effects of Long-Term or Repeated Exposure:
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Physical
Properties
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Boiling point: 157-159°C
Relative density (water = 1): 0.97
Solubility in water: reaction
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Flash point: 54°C c.c.
Explosive limits, vol% in air: see Notes
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Environmental
Data
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N O T E S
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Explosive limits are unknown in literature, although the substance is combustible and has a flash point < 61°C.
Do NOT use in the vicinity of a fire or a hot surface, or during welding.
Transport Emergency Card: TEC (R)-30G35
Card has been partially updated in August 2007: see Fire fighting, Storage.
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ADDITIONAL INFORMATION
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ICSC: 0684
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TRIETHYL PHOSPHITE
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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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