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4-aminobenzenesulfonic acid
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| Post Date: | Sep 10,2018 |
| Expiry Date: | Sep 10,2019 |
| Detailed Description: |
Cas No. :121-57-3
Quantity: C6H7O3NSFCL Specs:Benzenesulfonic acid, p-Toluenesulfonic_acid 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 |
| CAS Registry Number: | 121-57-3 |
| Synonyms: | ;4-Aminobenzenesulfonic acid;4-Anilinesulfonic acid;Sulphanilic acid;4-Aminobenzenesulphonic acid;Sulphanillic Acid;4-aminobenzenesulfonate;p-Aminobenesulfonic acid; |
| Molecular Formula: | C6H7NO3S |
| Molecular Weight: | 173.18648 |
| Molecular Structure: | 
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| Hazard Symbols: |  Xi:Irritant; |
| Risk Codes: | R36/38:; R43:; |
| Safety Description: | S24:; S37:; |
| Company: | PHCHEM CO.,LTD. [ China ] |
| Contact: | PHCHEM |
| Tel: | 86-132-30050173 |
| Fax: | |
| Email: | shynj13@163.com |
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