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Name	Tributyl phosphite	EINECS	203-061-3
CAS No.	102-85-2	Density	g/cm³
PSA	41.28000	LogP	4.66340
Solubility	Not miscible or difficult to mix in water.	Melting Point	-80 °C
Formula	C12H27 O3 P	Boiling Point	125 °C
Molecular Weight	250.318	Flash Point	121.1°C
Transport Information	N/A	Appearance	Clear colorless liquid
Safety	Moderately toxic by ingestion and skin contact. A skin and eye irritant. Has been known to damage eyes. Combustible when exposed to heat or flame. To fight fire, use CO₂, dry chemical. When heated to decomposition it emits toxic fumes of PO_x.	Risk Codes	21-34
Molecular Structure		Hazard Symbols
Synonyms	1-Butanol,1,1',1''-phosphinidynetri- (6CI); Butyl phosphite, (BuO)3P (4CI); JP 304; NSC2675; Phosphorus tributoxide (P(OBu)3); Tri-n-butyl phosphite;Tributoxyphosphine; Tributyl phosphite	Article Data	45

Tributyl phosphite Synthetic route

: O,O-dibutyl (tributoxymethyl)phosphonate

A: 102-85-2
tri-n-butyl phosphite

B: 542-52-9
Dibutyl carbonate

Conditions

Conditions	Yield
With boron trifluoride diethyl etherate under 8 Torr; Heating;	A 71% B n/a

: O,O-dibutyl (tributoxymethyl)phosphonate

: 102-85-2
tri-n-butyl phosphite

Conditions

Conditions	Yield
With boron trifluoride diethyl etherate under 8 Torr; Heating;	71%

: 71-36-3
butan-1-ol

: 102-85-2
tri-n-butyl phosphite

Conditions

Conditions	Yield
With potassium phosphate; tetrahexylammonium chloride; phosphorus trichloride In dichloromethane at 20℃; for 3h;	69%
With sodium hexachloroplatinate; phosphan at 24.9℃; Rate constant; Kinetics; also in the presence of LiCl, HCl, H2O, LiBr, NaI; var. conc. of reactants;
With ammonia; Petroleum ether; phosphorus trichloride

: 51104-80-4
diethyl ester of 2-phenylethynylphosphonous acid

: 71-36-3
butan-1-ol

A: 102-85-2
tri-n-butyl phosphite

B: 536-74-3
phenylacetylene

Conditions

Conditions	Yield
With C4H9ONa Product distribution; Heating; oth. alcohols;	A 63% B n/a

: 42964-63-6
S,S-diethyl-N-diethylamidodithiophosphite

: 71-36-3
butan-1-ol

A: 688-62-0
triethyl trithiophosphite

B: 102-85-2
tri-n-butyl phosphite

Conditions

Conditions	Yield
at 160℃; for 8h; Product distribution; Mechanism;	A 36% B 40%

: 42964-63-6
S,S-diethyl-N-diethylamidodithiophosphite

: 71-36-3
butan-1-ol

A: 688-62-0
triethyl trithiophosphite

B: 102-85-2
tri-n-butyl phosphite

C: 109-89-7
diethylamine

D: 75-08-1
ethanethiol

Conditions

Conditions	Yield
at 160℃; for 8h;	A 36% B 40% C n/a D n/a

...Expand

: 110-86-1
pyridine

: 10496-13-6
butyl dichlorophosphite

: 71-36-3
butan-1-ol

: 102-85-2
tri-n-butyl phosphite

: 101-02-0
triphenyl phosphite

: 2372-45-4
sodium butanolate

: 102-85-2
tri-n-butyl phosphite

Conditions

Conditions	Yield
With benzene

: 10496-13-6
butyl dichlorophosphite

: 2372-45-4
sodium butanolate

A: 4124-92-9
dibutyl chlorophosphite

B: 102-85-2
tri-n-butyl phosphite

: 2372-45-4
sodium butanolate

A: 1809-19-4
dibutyl hydrogen phosphite

B: 102-85-2
tri-n-butyl phosphite

Conditions

Conditions	Yield
With diethyl ether; phosphorus trichloride

Tributyl phosphite Chemical Properties

IUPAC Name:Tributyl phosphite (102-85-2)
Synonyms: 1,1,1-Phosphinidynetri-1-butano ; Butyl phosphite ((C₄H₉O)₃P) ; jp304 ; Phosphorus derivative ; Phosphorustributoxide(p(obu)3) ; Syn-O-Ad P-312 ; Tributoxyphosphine ; Tributylfosfit
Product Categories: Organic Building Blocks;Organic Phosphates/Phosphites;Phosphorus Compounds
CAS: 102-85-2
Molecular Formula :C₁₂H₂₇O₃P
Molecular Weight: 250.31
Molecular Structure:
EINECS: 203-061-3
Mol File: 102-85-2.mol
Flash Point: 121.1 °C
Enthalpy of Vaporization: 48.57 kJ/mol
Melting point: -80 °C
Boiling Point: 268.1 °C at 760 mmHg
Vapour Pressure: 0.013 mmHg at 25°C
Density : 0.925 g/mL at 25 °C(lit.)
Refractive index: n20/D 1.431(lit.)
BRN: 1703866
Appearance: Clear colorless liquid

Tributyl phosphite Uses

Tributyl phosphite (102-85-2) is used as lubricants, preservatives, heat stabilizers of Intensifier.

Tributyl phosphite Toxicity Data With Reference

1.	skn-rbt 10 mg/24H	JIHTAB Journal of Industrial Hygiene and Toxicology. 26 (1944),269.
2.	eye-rbt 500 mg	AJOPAA American Journal of Ophthalmology. 29 (1946),1363.
3.	orl-rat LD50:3000 mg/kg	JIHTAB Journal of Industrial Hygiene and Toxicology. 26 (1944),269.
4.	skn-rbt LD50:2 g/kg	AIHAAP American Industrial Hygiene Association Journal. 34 (1973),286.

Tributyl phosphite Consensus Reports

Reported in EPA TSCA Inventory.

Tributyl phosphite Safety Profile

Hazard Codes C
Risk Statements 21-34
21:Tributyl phosphite (102-85-2) is harmful in contact with skin.
34: Tributyl phosphite (102-85-2) can causes burns.
Safety Statements 26-36/37/39-45
25: Avoid contact with eyes
45: In case of accident or if you feel unwell, seek medical advice immediately (show label where possible)
36/37/39: Wear suitable protective clothing, gloves and eye/face protection
RIDADR UN 3265 8/PG 3
WGK Germany 3
RTECS TH0875000

Tributyl phosphite Specification

1.General Information: As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear.
2.Extinguishing Media: Use water spray, dry chemical, carbon dioxide, or chemical foam
3.Handling: Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes.
4.Storage: Store Tributyl phosphite (102-85-2) in a cool, dry place. Store in a tightly closed container.

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