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NIOSH

TRIBUTYL PHOSPHATE

ICSC: 0584

Tri-n-butyl phosphate
Phosphoric acid, tributyl ester
C12H27O4P / (C4H9)3PO4
Molecular mass: 266.3
ICSC # 0584 		CAS # 126-73-8
RTECS # TC7700000
EC # 015-014-00-2
October 18, 2005 Validated

TYPES OF HAZARD/ EXPOSURE

ACUTE HAZARDS/ SYMPTOMS

PREVENTION

FIRST AID/
FIRE FIGHTING

FIRE Combustible. Gives off irritating or toxic fumes (or gases) in a fire.
NO open flames.
Water spray, foam, powder, carbon dioxide.
EXPLOSION


EXPOSURE
PREVENT GENERATION OF MISTS!

•INHALATION Cough. Headache. Nausea. Sore throat.
Local exhaust or breathing protection.
Fresh air, rest.
•SKIN Redness. Pain.
Protective gloves.
Remove contaminated clothes. Rinse skin with plenty of water or shower.
•EYES Redness. Pain.
Safety goggles .
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
•INGESTION
Do not eat, drink, or smoke during work.
Rinse mouth. Refer for medical attention.

SPILLAGE DISPOSAL

STORAGE

PACKAGING & LABELLING

Personal protection: filter respirator for organic gases and vapours. Do NOT let this chemical enter the environment. Collect leaking liquid in sealable containers. Do not use plastic containers. Absorb remaining liquid in sand or inert absorbent and remove to safe place.
Store in an area without drain or sewer access. Separated from bases and strong oxidants.

Xn symbol
R: 22-38-40
S: 2-36/37-46
ICSC: 0584 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities (C) IPCS CEC 1994. No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and NIOSH IDLH values.

TRIBUTYL PHOSPHATE

ICSC: 0584

I

M

P

O

R

T

A

N

T


D

A

T

A

PHYSICAL STATE; APPEARANCE:
COLOURLESS ODOURLESS VISCOUS LIQUID

PHYSICAL DANGERS:


CHEMICAL DANGERS:
The substance decomposes on burning producing toxic fumes including phosphorus oxides . Reacts with warm water producing corrosive phosphoric acid and butanol. Attacks some forms of plastic, rubberandcoatings. Reacts with bases and strong oxidants .

OCCUPATIONAL EXPOSURE LIMITS:
TLV: 0.2 ppm as TWA; BEI issued; (ACGIH 2005).
MAK: 1 ppm
as TWA;
skin absorption (H);
Peak limitation category: II(4); Carcinogen category: 4; Pregnancy risk group: C;
(DFG 2005).
OSHA PEL†: TWA 5 mg/m3
NIOSH REL: TWA 0.2 ppm (2.5 mg/m3)
NIOSH IDLH: 30 ppm See: 126738


ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation of its vapour, through the skin 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 ; on spraying or dispersing, however, much faster.

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

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
When ingested the substance may have effects on the bladder , resulting in tissue lesions .

PHYSICAL
PROPERTIES

Boiling point (decomposes): 289°C
Melting point: <-80°C
Relative density (water = 1): 0.98
Solubility in water:
poor
Vapour pressure, Pa at 25°C: 0.15
Relative vapour density (air = 1): 9.2
Flash point: 146°C o.c.
Auto-ignition temperature: >482°C
Octanol/water partition coefficient as log Pow: 4.0

ENVIRONMENTAL
DATA

The substance is toxic to aquatic organisms.

N O T E S

NFPA Code: H3; F1; R0;

ADDITIONAL INFORMATION



ICSC: 0584 TRIBUTYL PHOSPHATE
(C) IPCS, CEC, 1994
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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