Shanghai Nianxing Industrial Co., Ltd
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Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: Ethylmercaptomethylphosphonic acid dibutyl ester
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Purity: 98.0%
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74038-42-9

74038-42-9 structure

74038-42-9 structure

Name: Ethylmercaptomethylphosphonic acid dibutyl ester
Chemical Name: 1-[butoxy(ethylsulfanylmethyl)phosphoryl]oxybutane
CAS Number: 74038-42-9
Molecular Formula: C₁₁H₂₅O₃PS
Molecular Weight: 268.35300
Create Date: 2017-08-27 04:53:03
Modify Date: 2025-10-07 11:52:08

Name	1-[butoxy(ethylsulfanylmethyl)phosphoryl]oxybutane
Synonyms	Dibutyl ethylmercaptomethylphosphonate Phosphonic acid,ethylthiomethyl-,dibutyl ester ETHYLTHIOMETHYL-PHOSPHONIC ACID DIBUTYL ESTER dibutyl[(ethylsulfanyl)methyl]phosphonate Ethylmercaptomethylphosphonic acid dibutyl ester

Density	1.028g/cm3
Boiling Point	338.5ºC at 760 mmHg
Molecular Formula	C₁₁H₂₅O₃PS
Molecular Weight	268.35300
Flash Point	158.5ºC
Exact Mass	268.12600
PSA	70.64000
LogP	4.52350
Index of Refraction	1.459

CHEMICAL IDENTIFICATION

RTECS NUMBER :: SZ8535000

CHEMICAL NAME :: Phosphonic acid, ethylthiomethyl-, dibutyl ester

CAS REGISTRY NUMBER :: 74038-42-9

LAST UPDATED :: 198209

DATA ITEMS CITED :: 1

MOLECULAR FORMULA :: C11-H25-O3-P-S

MOLECULAR WEIGHT :: 268.39

WISWESSER LINE NOTATION :: 4OPO&O4&1S2

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

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

ROUTE OF EXPOSURE :: Intravenous

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 56 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#04299

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