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Merck
CN

125938

Dibutyl phosphite

96%

Synonym(s):

Butyl phosphite, Butyl phosphonate, Di-n-butyl hydrogen phosphite, Di-n-butyl phosphite, Dibutoxyphosphine oxide, Dibutyl hydrogen phosphite, Dibutyl phosphonate

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About This Item

Linear Formula:
(CH3CH2CH2CH2O)2P(O)H
CAS Number:
1809-19-4
Molecular Weight:
194.21
NACRES:
NA.22
PubChem Substance ID:
24847687
eCl@ss:
39110212
UNSPSC Code:
12352100
MDL number:
MFCD00066633
Beilstein/REAXYS Number:
1099706

Key Documents

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Product Name

Dibutyl phosphite, 96%

InChI

1S/C8H19O3P/c1-3-5-7-10-12(9)11-8-6-4-2/h12H,3-8H2,1-2H3

SMILES string

CCCCO[PH](=O)OCCCC

InChI key

NFJPGAKRJKLOJK-UHFFFAOYSA-N

vapor pressure

<0.1 mmHg ( 20 °C)

assay

96%

impurities

≤1% butanol

refractive index

n20/D 1.423 (lit.)

bp

118-119 °C/11 mmHg (lit.)

solubility

H2O: soluble 7.3 g/L at 25 °C

density

0.995 g/mL at 25 °C (lit.)

Quality Level

100

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Application

Dibutyl phosphite was used as anti-wear agent in bio-based lubricating oil.

General description

Dibutyl phosphite undergoes addition reaction with Schiff bases to yield 1,4-bis[N-methyl(dibutoxyphosphonyl)-1-(2-furyl)]diaminobenzene and 4,4′-bis[N-methyl(dibutoxyphosponyl)-1-phenyl]benzidine. It is antiwear and extreme-pressure additive in industrial gear oils.

Other Notes

Contains tributyl phosphate

pictograms

Health hazardExclamation mark
GHS08,GHS07

signalword

Warning

Hazard Classifications

Aquatic Chronic 3 - Carc. 2 - Eye Irrit. 2 - Skin Irrit. 2

Storage Class

10 - Combustible liquids

wgk

WGK 3

flash_point_f

244.4 °F - closed cup

flash_point_c

118 °C - closed cup

Regulatory Information

危险化学品
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Certificates of Analysis (COA)

Lot/Batch Number
MKCD7654
06518PC
11108MQ
04004DX
08510MW

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Bio-Lubricants Development: The Potential Use of Boron-Containing Additives.
Dicky D and Dyah SP.
Proceeding of International Conference on Chemical and Material Engineering (2012)
Addition products of dibutyl phosphite to schiff bases.
Kraicheva I.
Phosph. Sulfur Relat. Elem., 134(1), 287-294 (1998)
Industrial gear oil-a study of the interaction of antiwear and extreme-pressure additives.
Fang X, et al.
Tribology International, 26(6), 395-398 (1993)

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