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CAS 121-57-3 Sulfanilic Acid/sherry@chembj.com

Create: 12/12/2016
Expired Date:12/11/2017
Category: Raw materials [Health&Medical&Pharmaceutical]
Message:CAS 121-57-3 Sulfanilic Acid/sherry@chembj.com Product Name: Sulfanilic Acid Alias: 4-Aminobenzenesulfonic Acid;4-Anilinesulfonic Acid CAS: 121-57-3 EINECS: 204-482-5 MF: C6H7NO3S MW: 173.19 Purity: 99% Grade: Industrial Grade Appearance: White Powder Sulfanilic acid (4-aminobenzenesulfonic acid ) is an off-white crystalline solid which finds application in quantitative analysis of nitrate and nitrite ions. The solid acid exists as a zwitterion, and has an unusually high melting point. As the compound readily form diazo compounds, it is used to make dyes and sulpha drugs. This property is also used for the quantitative analysis of nitrate and nitrite ions by diazonium coupling reaction with N-(1-Naphthyl)ethylenediamine, resulting in an azo dye, and the concentration of nitrate or nitrite ions were deduced from the color intensity of the resulting red solution by colorimetry. It is also used as a standard in combustion analysis and in the Pauly reaction.
City:Jinan Shandong[CN] 
Location:
 
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