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778-28-9 Usage


Butyl 4-Methylbenzenesulfonate is used in preparation of highly-branched chain Ammonium Dicarboxylate Salt.

Flammability and Explosibility


Check Digit Verification of cas no

The CAS Registry Mumber 778-28-9 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 7,7 and 8 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 778-28:
99 % 10 = 9
So 778-28-9 is a valid CAS Registry Number.



According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 12, 2017

Revision Date: Aug 12, 2017


1.1 GHS Product identifier

Product name Butyl p-toluenesulfonate

1.2 Other means of identification

Product number -
Other names butyl 4-methylbenzenesulfonate

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:778-28-9 SDS

778-28-9Relevant articles and documents

Identification of organophosphorus simulants for the development of next-generation detection technologies

Ellaby, Rebecca J.,Clark, Ewan R.,Allen, Nyasha,Taylor, Faith R.,Ng, Kendrick K. L.,Dimitrovski, Milan,Chu, Dominique F.,Mulvihill, Daniel P.,Hiscock, Jennifer R.

, p. 2008 - 2014 (2021/03/16)

Organophosphorus (OP) chemical warfare agents (CWAs) represent an ongoing threat but the understandable widespread prohibition of their use places limitations on the development of technologies to counter the effects of any OP CWA release. Herein, we describe new, accessible methods for the identification of appropriate molecular simulants to mimic the hydrogen bond accepting capacity of the PO moiety, common to every member of this class of CWAs. Using the predictive methodologies developed herein, we have identified OP CWA hydrogen bond acceptor simulants for soman and sarin. It is hoped that the effective use of these physical property specific simulants will aid future countermeasure developments.

Rapid transformation of sulfinate salts into sulfonates promoted by a hypervalent iodine(III) reagent

Deruer, Elsa,Hamel, Vincent,Blais, Samuel,Canesi, Sylvain

supporting information, p. 1203 - 1207 (2018/06/04)

An alternative method for forming sulfonates through hypervalent iodine(III) reagent-mediated oxidation of sodium sulfinates has been developed. This transformation involves trapping reactive sulfonium species using alcohols. With additional optimization of the reaction conditions, the method appears extendable to other nucleophiles such as electron-rich aromatic systems or cyclic ethers through a ring opening pathway.

An efficient practical tosylation of phenols, amines, and alcohols employing mild reagent [DMAPTs]+Cl?

Dhonthulachitty, Chiranjeevi,Kothakapu, Sridhar Reddy,Neella, Chandra Kiran

supporting information, p. 4620 - 4623 (2016/09/23)

Efficient exploration of [DMAPTs]+Cl?for base free and chromatography free preparation of sulfonate esters from phenols and alcohols and sulfonamides from amines was achieved in excellent yields. Majority of the phenols irrespective of their substituents electronic nature underwent tosylation nearly at same reaction rate with an average yield of 95%. For amines, ring activating substituents favors rapid sulfonylation while the ring deactivating substituents relatively lowers the rate of tosylation. Furthermore the reagent was employed for Chemoselective sulfonylation as well as solvent free tosylation of phenols and amines.

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