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Benzenesulfonic acid, 4-hydroxy-3-[(2-hydroxy-1-naphthalenyl)azo]-, is a complex organic compound with the chemical formula C16H12N2O4S. It is characterized by a benzene ring with a sulfonic acid group attached, a hydroxyl group, and an azo group that connects a 2-hydroxy-1-naphthalenyl moiety. Benzenesulfonic acid, 4-hydroxy-3-[(2-hydroxy-1-naphthalenyl)azo]- is known for its vibrant color and is often used as a dye in various applications due to its ability to form strong colorations. It is also recognized for its potential applications in chemical research and as an intermediate in the synthesis of other complex molecules. The compound's structure and properties make it a significant player in the field of organic chemistry, particularly in the development of colored substances and pigments.

3219-56-5

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3219-56-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 3219-56-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,2,1 and 9 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 3219-56:
(6*3)+(5*2)+(4*1)+(3*9)+(2*5)+(1*6)=75
75 % 10 = 5
So 3219-56-5 is a valid CAS Registry Number.

3219-56-5SDS

SAFETY DATA SHEETS

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.Identification

1.1 GHS Product identifier

Product name 4-hydroxy-3-[2-(2-oxonaphthalen-1-ylidene)hydrazinyl]benzenesulfonic acid

1.2 Other means of identification

Product number -
Other names 5-Sulfo-2-hydroxybenzolazo-2-naphthol

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:3219-56-5 SDS

3219-56-5Upstream product

3219-56-5Downstream Products

3219-56-5Relevant academic research and scientific papers

Process for producing 3,3-bis-(4-dimethylaminophenyl)-6-dimethylaminophthalide

-

, (2008/06/13)

3,3-Bis-(4-dimethylaminophenyl)-6-dimethylaminophthalide is produced by oxidizing an alkali metal salt of 2-[4,4'-bis-(dimethylamino)-benzhydryl]-5-dimethylaminobenzoic acid in an aqueous solution of pH of 8 to 14 with hydrogen peroxide, oxygen or air in the presence of a catalyst selected from the group consisting of cobalt compounds and copper compounds.

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