Tributyl phosphite

Structural formula
General
Surname	Tributyl phosphite
other names	Tri- n -butyl phosphite
Molecular formula	C 12 H 27 O 3 P
Brief description	colorless liquid with an unpleasant odor
External identifiers / databases
CAS number 102-85-2 EC number 203-061-3 ECHA InfoCard 100.002.784 PubChem 7623 ChemSpider 7341 Wikidata Q27259245
properties
Molar mass	250.32 g mol −1
Physical state	liquid
density	0.92 g cm −3
Melting point	−80 ° C
boiling point	241 ° C
Vapor pressure	18.26 hPa (20 ° C)
solubility	slow decomposition in water
Refractive index	1.4320 (20 ° C)
safety instructions
GHS labeling of hazardous substances Caution H and P phrases H: 315-319 P: 264-280-302 + 352-305 + 351 + 338-332 + 313-337 + 313-362 + 364
Toxicological data	3000 mg kg −1 ( LD 50 ,  rat ,  oral ) 2000 mg kg −1 ( LD 50 ,  rabbit ,  transdermal )
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . Refractive index: Na-D line , 20 ° C

Tributyl phosphite is a chemical compound from the group of phosphonic acid esters .

Extraction and presentation

Tributyl phosphite can be obtained by reacting phosphorus tribromide with n -butanol in the presence of trihexylamine .

properties

Tributyl phosphite is a colorless liquid with an unpleasant odor that slowly decomposes in water.

use

Tributyl phosphite is used as a lubricant , preservative and heat stabilizer .

Individual evidence

1. ↑ ^{a b c d e f g h i j k l} Entry on tributyl phosphite in the GESTIS substance database of the IFA , accessed on October 19, 2019(JavaScript required) .
2. ↑ ^{a b} Data sheet tri-n-butyl phosphite, 94% from AlfaAesar, accessed on October 19, 2019 ( PDF )(JavaScript required) .
3. ↑ Google Patents: US3235629A - Selective trialkylphosphite extraction process , accessed October 19, 2019.
4. ↑ Google Patents: US2836562A - Petroleum lubricating jelly containing an aluminum soap, tricresylphosphate and tributylphosphite , accessed October 19, 2019