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3770-97-6 Usage


2-Diazo-1-naphthol-5-sulfonyl chloride is a very dark yellow solid that serves as a useful research chemical with potential applications in various industries.


Used in Printing Industry:
2-Diazo-1-naphthol-5-sulfonyl chloride is used as a photosensitizer for printing processes. Its ability to enhance the sensitivity of printing materials to light exposure allows for improved print quality and efficiency in the printing industry.

Flammability and Explosibility


Check Digit Verification of cas no

The CAS Registry Mumber 3770-97-6 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,7,7 and 0 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 3770-97:
106 % 10 = 6
So 3770-97-6 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 18, 2017

Revision Date: Aug 18, 2017


1.1 GHS Product identifier

Product name 1,2-Naphthoquinone-2-diazido-5-sulfonyl Chloride

1.2 Other means of identification

Product number -
Other names 2-Diazo-1-naphthol-5-sulfonyl chloride

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:3770-97-6 SDS

3770-97-6Relevant articles and documents

Synthetic method of naphthaquinone sulfonyl chloride


Paragraph 0030, (2017/01/12)

The invention discloses a synthetic method of naphthaquinone sulfonyl chloride, belonging to the technical field of organic synthesis. According to the synthetic method, naphthaquinone sulfonyl chloride is synthesized from naphthaquinone sulfonyl chloride in an inert solvent in the presence of a catalysis amount of initiator by taking di(trichloromethyl)carbonic ester as an acylating chlorination reagent. Highly corrosive materials such as chlorosulfonic acid, thionyl chloride and the like are not used in the reaction process, and a large number of sulfur dioxide, hydrogen chloride gas and acid wastewater are not generated in the reaction, so that the treating stresses of water gas and wastewater are relieved, the environment is protected, the corrosion resistance requirement of industrial equipment is reduced, and the safe operation of the equipment is guaranteed.



Page/Page column 12, (2008/06/13)

The present invention provides a single pot process for the preparation of diazonaphthoquinonesulfonyl ester, a useful organic material for micro electronic and dye industry. This study pertains to the one pot preparation of diazonaphthoquinonesulfonyl esters using the corresponding diazonaphthoquinine sulfonic acid or its sodium salt, diphosgene or triphosgene, variety of hydroxy compounds and tertiary organic base in an organic solvent medium

Sulfochlorination of 1,2-Naphthoquinone-(2)-diazide by Chlorosulfonic acid

Sauer, E.,Polz, K.,Schopf, G.,Bendig, J.

, p. 467 - 473 (2007/10/02)

The sulfochlorination of 1,2-naphthoquinone diazide-(2) (1) by chlorosulfonic acid was investigated.The yields of the formed products (1,2-naphthoquinone diazide-(2)-4-sulfonic acid (4), 1,2-naphthoquinone diazide-(2)-5-sulfonic acid (5), 1,2-naphthoquinone diazide-(2)-4-sulfochloride (2) and 1,2-naphthoquinone diazide-(2)-5-sulfochloride (3)) depend on the temperature and on the time of reaction.The highest yields of the favoured 1,2-naphthoquinone diazide-(2)-4-sulfochloride (2) are obtained at 63 deg C and after a reaction time of 80 minutes (50percent).

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