MSDS Name:Tri-N-Butyl Phosphate
Synonym:TBP; Phosphoric acid, tributyl ester; n-Butyl phosphate; Tributyl phosphate

EMERGENCY OVERVIEW
Harmful if swallowed. Irritating to skin. Limited evidence of a carcinogenic effect.
Potential Health Effects
Eye:
Causes eye irritation.
Skin:
Causes skin irritation. A single prolonged skin exposure is not likely to result in the material being absorbed in harmful amounts.
Ingestion:
May be harmful if swallowed.
Inhalation:
Inhalation of a mist of this material may cause respiratory tract irritation. Material has a very low vapor pressure and inhalation exposures are not expected unless material is heated or misted.
Chronic:
Prolonged or repeated skin contact may cause dermatitis.

Eyes: In case of contact, immediately flush eyes with plenty of water for at least 15 minutes. Get medical aid.
Skin:
In case of contact, flush skin with plenty of water. Remove contaminated clothing and shoes. Get medical aid if irritation develops and persists. Wash clothing before reuse.
Ingestion:
If swallowed, do not induce vomiting unless directed to do so by medical personnel. Never give anything by mouth to an unconscious person. Get medical aid.
Inhalation:
If inhaled, remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
Notes to Physician:

General Information:
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Use water spray to keep fire-exposed containers cool. Containers may explode in the heat of a fire.
Extinguishing Media:
Use water spray, dry chemical, carbon dioxide, or appropriate foam.

General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks:
Absorb spill with inert material (e.g. vermiculite, sand or earth), then place in suitable container. Avoid runoff into storm sewers and ditches which lead to waterways. Provide ventilation.

Handling:
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Avoid breathing vapors from heated material. Avoid contact with eyes, skin, and clothing. Avoid breathing spray or mist.
Storage:
Store in a cool, dry place. Keep from contact with oxidizing materials. Keep containers tightly closed.

Engineering Controls:
Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower. Use adequate general or local exhaust ventilation to keep airborne concentrations below the permissible exposure limits.
Exposure Limits CAS# 126-73-8: United Kingdom, WEL - TWA: 5 mg/m3 TWA United Kingdom, WEL - STEL: 5 mg/m3 STEL United States OSHA: 5 mg/m3 TWA Belgium - TWA: 0.2 ppm VLE; 2.2 mg/m3 VLE France - VME: 0.2 ppm VME; 2.5 mg/m3 VME Germany: 2.5 mg/m3 TWA Germany: Skin absorber Malaysia: 0.2 ppm TWA; 2.2 mg/m3 TWA Netherlands: 5 mg/m3 MAC Russia: 0.5 mg/m3 TWA Spain: 0.2 ppm VLA-ED; 2.2 mg/m3 VLA-ED Personal Protective Equipment Eyes: Wear chemical splash goggles.
Skin:
Wear appropriate protective gloves to prevent skin exposure.
Clothing:
Wear appropriate protective clothing to prevent skin exposure.
Respirators:
A respiratory protection program that meets OSHAs 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant respirator use.

Physical State: Liquid
Color: clear, colorless
Odor: odorless
pH: Not available.
Vapor Pressure: 0.00012 mm Hg @ 25 deg C.
Viscosity: 3.39 cps @ 25 deg C
Boiling Point: 289 deg C (dec)
Freezing/Melting Point: <-80 deg C
Autoignition Temperature: > 482 deg C (> 899.60 deg F)
Flash Point: 146 deg C ( 294.80 deg F)
Explosion Limits, lower: None found.
Explosion Limits, upper: None found.
Decomposition Temperature: 289 deg C
Solubility in water: Slightly soluble in water.
Specific Gravity/Density: .9790
Molecular Formula: C12H27O4P
Molecular Weight: 266.32

Chemical Stability:
Stable under normal temperatures and pressures. Decomposes when heated forming phosphoric acid and butene, or on contact with warm water forming phosphoric acid and butanol.
Conditions to Avoid:
Moisture, excess heat.
Incompatibilities with Other Materials:
Strong oxidizing agents, alkalis.
Hazardous Decomposition Products:
Carbon monoxide, oxides of phosphorus, carbon dioxide, n-butanol, phosphoric acid.
Hazardous Polymerization: Will not occur.

RTECS#:
CAS# 126-73-8: TC7700000 LD50/LC50:
CAS# 126-73-8: Draize test, rabbit, eye: 500 mg Severe; Inhalation, mouse: LC50 = 1300 mg/m3; Inhalation, rat: LC50 = 28 gm/m3/1H; Oral, mouse: LD50 = 1189 mg/kg; Oral, rat: LD50 = 3 gm/kg; Skin, rabbit: LD50 = >3100 mg/kg.
Carcinogenicity:
Tributyl phosphate - Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.

Ecotoxicity:
Fish: Rainbow trout: LC50 = 5.0-9.0 mg/L; 96 Hr.; UnspecifiedFish: Carp: LC50 = 5.0-9.0 mg/L; 96 Hr.; Unspecified

Dispose of in a manner consistent with federal, state, and local regulations.

IATA
Shipping Name: Not regulated.
Hazard Class:
UN Number:
Packing Group:
IMO
Shipping Name: Not regulated.
Hazard Class:
UN Number:
Packing Group:
RID/ADR
Not regulated as a hazardous material.

European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: XN
Risk Phrases:
R 22 Harmful if swallowed.
R 38 Irritating to skin.
R 40 Limited evidence of a carcinogenic effect.
Safety Phrases:
S 36/37 Wear suitable protective clothing and
gloves.
S 46 If swallowed, seek medical advice immediately
and show this container or label.
WGK (Water Danger/Protection)
CAS# 126-73-8: 2
Canada
CAS# 126-73-8 is listed on Canadas DSL List.
CAS# 126-73-8 is listed on Canadas Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 126-73-8 is listed on the TSCA inventory.