Shanghai Nianxing Industrial Co., Ltd
China
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Dayang Chem (Hangzhou) Co., Ltd.
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Product Name: Butyl 4-toluenesulfonate
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Henan Tianfu Chemical Co., Ltd.
China
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Zhongshan Xingrui Chemical Co. , Ltd.
China
Product Name: Butyl 4-methylbenzenesulfonate
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778-28-9

778-28-9 structure

778-28-9 structure

Name: Butyl 4-methylbenzenesulfonate
Chemical Name: Butyl p-toluenesulfonate
CAS Number: 778-28-9
Molecular Formula: C₁₁H₁₆O₃S
Molecular Weight: 228.308
Catalog: Chemical reagent Organic reagent Tosylate
Create Date: 2018-08-05 18:03:26
Modify Date: 2026-07-01 20:25:32

Name	Butyl p-toluenesulfonate
Synonyms	Butyl Pa Toluenesulfonate, Butyl P-Toluenesulfonate, P-TOLUENESULFONIC ACID N-BUTYL ESTER Butyl p- toluene sulphonate PA-TOLUENESULPHONICACID,BUTYLESTER Benzenesulfonic acid, 4-methyl-, butyl ester butyltoluene-4-sulphonate EINECS 212-295-5 BUTYL 4-TOLUENESULFONATE BUTYLPA-TOLUENESULPHONATE Butyl p-Toluenesulfonate Benzenesulfonicacid,4-methyl-,butylester Butylpa-toluenesulfonate Butyl tosylate butyl4-methylbenzenesulfonate p-Methylbenzene-1-sulfonic acid butyl ester n-Butyl-p-toluenesulfonate [-9] MFCD00027203 butyltosylate P-TOLUENESULFONIC ACID N-BUTYL ESTER BUTYL P-TOSYLATE Butyl ester of 4-Toluenesulfonic acid 4-methyl-benzenesulfonicacibutylester N-BUTYLTOSYLATE p-toluenesulfonicacid,butylester 4-METHYLBENZENESULFONIC ACID, BUTYL ESTER Butyl p-methylbenzenesulfonate p-Toluenesulfonic acid, butyl ester N-BUTYL P-TOLUENESULFONATE Butyl4-toluenesulphonate butylp-methylbenzenesulfonate Butyl p-Toluenesulfonate > Butyl pa-toluenesulfonate

Density	1.1±0.1 g/cm3
Boiling Point	335.4±11.0 °C at 760 mmHg
Molecular Formula	C₁₁H₁₆O₃S
Molecular Weight	228.308
Flash Point	156.6±19.3 °C
Exact Mass	228.082016
PSA	51.75000
LogP	2.89
Vapour Pressure	0.0±0.7 mmHg at 25°C
Index of Refraction	1.506

CHEMICAL IDENTIFICATION

RTECS NUMBER :: XT6400000

CHEMICAL NAME :: p-Toluenesulfonic acid, butyl ester

CAS REGISTRY NUMBER :: 778-28-9

BEILSTEIN REFERENCE NO. :: 1428508

LAST UPDATED :: 199701

DATA ITEMS CITED :: 4

MOLECULAR FORMULA :: C11-H16-O3-S

MOLECULAR WEIGHT :: 228.33

WISWESSER LINE NOTATION :: 4OSWR D1

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

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

ROUTE OF EXPOSURE :: Subcutaneous

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 5 gm/kg

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

REFERENCE :: ZEKBAI Zeitschrift fuer Krebsforschung. (Berlin, Fed. Rep. Ger.) V.1-75, 1903-71. For publisher information, see JCROD7. Volume(issue)/page/year: 74,241,1970

TYPE OF TEST :: LD - Lethal dose

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: >500 mg/kg

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

REFERENCE :: CBCCT* "Summary Tables of Biological Tests," National Research Council Chemical-Biological Coordination Center. (National Academy of Science Library, 2101 Constitution Ave., NW, Washington, DC 20418) Volume(issue)/page/year: 2,303,1950

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

ROUTE OF EXPOSURE :: Intravenous

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 320 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#01764

Hazard Codes	Xn
Risk Phrases	36/37/38-22
Safety Phrases	S37/39-S26
RTECS	XT6400000

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