ICSC 0684 - TRIETHYL PHOSPHITE

TRIETHYL PHOSPHITE	ICSC: 0684 (July 1997)
Phosphorous acid, triethyl ester

CAS #: 122-52-1

UN #: 2323

EC Number: 204-552-5

	ACUTE HAZARDS	PREVENTION	FIRE FIGHTING
FIRE & EXPLOSION	Flammable. Gives off irritating or toxic fumes (or gases) in a fire. Above 54°C explosive vapour/air mixtures may be formed.	NO open flames, NO sparks and NO smoking. Above 54°C use a closed system, ventilation and explosion-proof electrical equipment.	Use powder, foam, carbon dioxide. NO hydrous agents. NO water. In case of fire: keep drums, etc., cool by spraying with water. NO direct contact with water.


	SYMPTOMS	PREVENTION	FIRST AID
Inhalation		Use ventilation.	Fresh air, rest.
Skin	Redness.	Protective gloves.	Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention .
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	Abdominal pain.	Do not eat, drink, or smoke during work.	Rinse mouth. Refer for medical attention .

SPILLAGE DISPOSAL	CLASSIFICATION & LABELLING
Personal protection: filter respirator for organic gases and vapours adapted to the airborne concentration of the substance. Ventilation. Collect leaking and spilled liquid in sealable containers as far as possible. Absorb remaining liquid in sand or inert absorbent. Then store and dispose of according to local regulations.	According to UN GHS Criteria Transportation UN Classification UN Hazard Class: 3; UN Pack Group: III
STORAGE
Fireproof. Dry. Separated from acids and strong oxidants. See Chemical Dangers.
PACKAGING

TRIETHYL PHOSPHITE

ICSC: 0684

PHYSICAL & CHEMICAL INFORMATION
Physical State; Appearance COLOURLESS LIQUID. Physical dangers Chemical dangers Decomposes on heating and on burning. This produces toxic fumes including phosphorus oxides. Reacts with water, acids and strong oxidants. This generates fire and explosion hazard.	Formula: C₆H₁₅O₃P Molecular mass: 166.2 Boiling point: 157-159°C Relative density (water = 1): 0.97 Solubility in water: reaction Flash point: 54°C c.c. Explosive limits, vol% in air: see Notes

PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS LIQUID.

Physical dangers

Chemical dangers
Decomposes on heating and on burning. This produces toxic fumes including phosphorus oxides. Reacts with water, acids and strong oxidants. This generates fire and explosion hazard.

Formula: C₆H₁₅O₃P
Molecular mass: 166.2
Boiling point: 157-159°C
Relative density (water = 1): 0.97
Solubility in water: reaction
Flash point: 54°C c.c.
Explosive limits, vol% in air: see Notes

EXPOSURE & HEALTH EFFECTS
Routes of exposure The substance can be absorbed into the body by inhalation of its vapour and by ingestion. Effects of short-term exposure The substance and the vapour are irritating to the eyes and skin.	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

EXPOSURE & HEALTH EFFECTS

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

Effects of short-term exposure
The substance and the vapour are irritating to the eyes and skin.

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
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.

ADDITIONAL INFORMATION

EC Classification

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    See Also:
       Toxicological Abbreviations