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Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: dibenzylphosphorylmethylbenzene
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4538-55-0

4538-55-0 structure

4538-55-0 structure

Name: dibenzylphosphorylmethylbenzene
Chemical Name: dibenzylphosphorylmethylbenzene
CAS Number: 4538-55-0
Molecular Formula: C₂₁H₂₁OP
Molecular Weight: 320.36500
Create Date: 2017-04-23 07:14:23
Modify Date: 2025-09-27 10:29:49

Name	dibenzylphosphorylmethylbenzene
Synonyms	tribenzylphosphinoxide Tribenzyl-phosphinoxid Tribenzylphosphinoxyd Phosphine oxide,tribenzyl tribenzylphosphane oxide tribenzyl-phosphine oxide

Density	1.126g/cm3
Boiling Point	546.1ºC at 760 mmHg
Molecular Formula	C₂₁H₂₁OP
Molecular Weight	320.36500
Flash Point	284.1ºC
Exact Mass	320.13300
PSA	26.88000
LogP	5.95010
Index of Refraction	1.592

CHEMICAL IDENTIFICATION

RTECS NUMBER :: SZ1500000

CHEMICAL NAME :: Phosphine oxide, tribenzyl-

CAS REGISTRY NUMBER :: 4538-55-0

BEILSTEIN REFERENCE NO. :: 2811322

LAST UPDATED :: 199612

DATA ITEMS CITED :: 2

MOLECULAR FORMULA :: C21-H21-O-P

MOLECULAR WEIGHT :: 320.39

WISWESSER LINE NOTATION :: OP1R&1R&1R

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: >2 gm/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: KHFZAN Khimiko-Farmatsevticheskii Zhurnal. Chemical Pharmaceutical Journal. For English translation, see PCJOAU. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1- 1967- Volume(issue)/page/year: 24(4),22,1990

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intravenous

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 100 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: CSLNX* U.S. Army Armament Research & Development Command, Chemical Systems Laboratory, NIOSH Exchange Chemicals. (Aberdeen Proving Ground, MD 21010) Volume(issue)/page/year: NX#03090

HS Code	2902909090

Precursor 10
13238-16-9 100-44-7 106-94-5 7650-89-7
1589-82-8 98-87-3 100-52-7 100-39-0
620-05-3 6921-34-2
DownStream 1
24442-45-3

HS Code	2902909090
Summary	2902909090 other aromatic hydrocarbons。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:2.0%。General tariff:30.0%

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