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83-31-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 83-31-8 includes 5 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 2 digits, 8 and 3 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 83-31:
48 % 10 = 8
So 83-31-8 is a valid CAS Registry Number.

83-31-8 Well-known Company Product Price

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  • Aldrich

  • (316539)  1,8-Naphthosultone  98%

  • 83-31-8

  • 316539-25G

  • 1,158.30CNY

  • Detail



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 1,8-Naphthosultone

1.2 Other means of identification

Product number -
Other names 1:8 NAPHTHOSULTONE

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:83-31-8 SDS

83-31-8Relevant articles and documents

Sulfonation of a series of naphthalenes containing two different oxy substituents

Ansink, Harold R. W.,Zelvelder, Erwin,Cerfontain, Hans

, p. 216 - 225 (2007/10/02)

The reactions of a series of α,α- and β,β-disubstituted naphthalenes containing two different substituents OR1 (R1 = H, SO2CH3) and OR2 (R2 =CH3, SO2CH3) with sulfur trioxide in CD3NO2 has been studied.The electronic directing effect of the hydroxy group was found to be dominant over that of the methoxy group, which in turn dominates that of the mesyloxy group.Upon reaction with an excess of sulfur trioxide, the hydroxy group is, at least in part, sulfated.For the β-hydroxy-β-methoxynaphthalenes 3a-5a and for 3-mesyloxy-2-naphthol (3c) especially, hydrogen sulfate formation strongly influences the product mixture composition.Thus, upon reaction with 1.0 equiv of SO3, 7-methoxy-2-naphthol (5a) yields its 1-sulfonic acid (1-S), whereas upon reaction with 2.0 equiv, it is the 8-S that is mainly formed due to initial hydrogen sulfate formation.Furthermore, sulfonic acid isomerizations due to steric hindrance are observed.Upon using >2.0 equiv of SO3, formation of di- and trisulfonic acids, as well as sulfo derivatives of both 8,1-naphthalenesultone and the cyclic naphthalene-1-sulfonate-2-sulfate anhydride is observed.

Approaches to anthracyclines: Efficient syntheses of substituted naphthylacetonitriles


, p. 1149 - 1151 (2007/10/02)


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