Tributylphosphine

Description

Tri-n-butylphosphine · CAS 998-40-3 · C12H27P. UNII 0O52FJR7WN. Boiling Point: 240 °C @760 [mm Hg]; Density: 0.812 @25 °C; Vapor Pressure: 16 [mm Hg] @121 °C.

Identification

CAS Registry Number	998-40-3
PubChem CID	13831
Molecular formula	C12H27P
IUPAC name	tributylphosphane
UNII (FDA)	0O52FJR7WN

Computed Descriptors

Molecular Weight	202.32
XLogP3	3.7
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	0
Rotatable Bond Count	9
Exact Mass	202.185037859
Monoisotopic Mass	202.185037859
Topological Polar Surface Area	0
Heavy Atom Count	13
Formal Charge	0

Physical & Chemical Properties

Boiling Point	240 °C @760 [mm Hg]
Density	0.812 @25 °C
Vapor Pressure	16 [mm Hg] @121 °C

Physical description & handling notes

• Tributylphosphine is a colorless to yellowish liquid with a strong garlic-like odor. It is insoluble in water. It is liable to heat and ignite spontaneously in air. If involved in a fire phosphine gas, a highly flammable and toxic gas, will evolve. It is irritating to mucous membranes.
• Liquid
• Colorless to yellowish liquid with a strong odor like garlic; [CAMEO] Clear colorless liquid; [Sigma-Aldrich MSDS]

GHS Hazard Classification

Reported hazard statements	H226 (15.7%), H250 (100%), H251 (12.9%), H302 (100%), H312 (64.5%), H314 (100%), H318 (48.8%), H411 (72.1%)

Documented Uses

• Used as a polymerization cross-linking catalyst, organic intermediate, and as a catalyst component for hydrogenation in the petroleum industry; [EPA OHM/TADS]
• Petroleum Production and Refining [Category: Industry]
• All Other Basic Organic Chemical Manufacturing

Synonyms

Tributylphosphine; Tributylphosphane; Tri-n-butylphosphine; 998-40-3; Phosphine, tributyl-; Tris(butyl)phosphine; Tributylfosfin; DTXSID9046998; 0O52FJR7WN; UN3254; NSC-91700; DTXCID7026998; RefChem:190921; 213-651-2; tributyl phosphine; Tri-n-butyl phosphine

Frequently Asked Questions

What are the CAS number and molecular formula of Tri-n-butylphosphine?

CAS 998-40-3; molecular formula C12H27P; molecular weight — g/mol.

What other names is Tri-n-butylphosphine known by?

Tributylphosphine, Tributylphosphane, Tri-n-butylphosphine, 998-40-3, Phosphine, tributyl-, Tris(butyl)phosphine.

Is Tri-n-butylphosphine classified as hazardous?

Hazard statements reported: H226, H250, H251, H302, H312.

What are the key physical properties of Tri-n-butylphosphine?

Boiling Point: 240 °C @760 [mm Hg]; Density: 0.812 @25 °C; Vapor Pressure: 16 [mm Hg] @121 °C.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.