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4-Hydroxy-3-nitroso-1-naphthalenesulfonic acid sodium salt is a chemical compound with the molecular formula C10H6NNaO5S. It is a derivative of naphthalene, a polycyclic aromatic hydrocarbon, and is characterized by the presence of a hydroxyl group, a nitroso group, and a sulfonic acid group. This sodium salt is typically used as a reagent in various chemical reactions and as an intermediate in the synthesis of dyes and pigments. It is also known for its potential applications in the pharmaceutical industry and as a research tool in organic chemistry. The compound is soluble in water and is often used in its sodium salt form due to its improved solubility compared to the free acid.

1787-54-8

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1787-54-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1787-54-8 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,7,8 and 7 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1787-54:
(6*1)+(5*7)+(4*8)+(3*7)+(2*5)+(1*4)=108
108 % 10 = 8
So 1787-54-8 is a valid CAS Registry Number.

1787-54-8SDS

SAFETY DATA SHEETS

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.Identification

1.1 GHS Product identifier

Product name 4-hydroxy-3-nitrosonaphthalene-1-sulfonic acid

1.2 Other means of identification

Product number -
Other names Nitroso Neville Winther's acid

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:1787-54-8 SDS

1787-54-8Relevant academic research and scientific papers

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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