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https://www.shachemlin.cn/
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| Products Intro: |
Product Name:Evocalcet impurity 49
CAS:80-82-0
Purity:97% Package:10g；100g；1kg；3kg；5kg；
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| | 2-NITROBENZENESULFONIC ACID Basic information |
| Product Name: | 2-NITROBENZENESULFONIC ACID | | Synonyms: | O-NITROBENZENESULFONIC ACID;2-NITROBENZENESULFONATE ACID;2-NITROBENZENESULFONIC ACID;2-nitrobenzenesulphonic acid;2-NITROBENZENESULFONIC ACID HYDRATE;2-Nitrobenzenesulfonic Acid ;2-NitrobenzenesulfonicAcidHydrate>;Benzenesulfonic acid, 2-nitro- | | CAS: | 80-82-0 | | MF: | C6H5NO5S | | MW: | 203.17 | | EINECS: | 201-311-6 | | Product Categories: | Intermediates of Dyes and Pigments | | Mol File: | 80-82-0.mol |  |
| | 2-NITROBENZENESULFONIC ACID Chemical Properties |
| Risk Statements | 34-41 | | Safety Statements | 26-36/37/39 | | RIDADR | 2305 | | HS Code | 2904.99.4700 | | HazardClass | 8 | | PackingGroup | II |
| | 2-NITROBENZENESULFONIC ACID Usage And Synthesis |
| Chemical Properties | Pale yellow crystals. Melting point 70 ℃. | | Uses | Used as an intermediates. | | Production Methods | 2-Chloronitrobenzene is reacted with sodium disulfide at 80 ℃ in aqueous ethanol to give 2,2' -dinitrodiphenyl disulfide, which is isolated and treated with chlorine in mineral acid medium in the presence of nitric
acid to produce 2-nitrobenzenesulfonyl chloride by oxidative chlorination. This is hydrolyzed in dilute alkali, and the liquor of the resulting 2-Nitrobenzenesulfonic Acid is reduced with Fe – acid or H2 – catalyst to orthanilic acid [88-21-1], an important diazo component in reactive dyes for cotton. | | Synthesis | 2-Nitrobenzenesulfonic Acid is synthesized by reacting o-Nitrobenzenesulfonyl chloride with Concentrated ammonia solution in glacial acetic acid |
| | 2-NITROBENZENESULFONIC ACID Preparation Products And Raw materials |
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