| Company Name: |
Carbott PharmTech Inc.
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| Tel: |
0535-6385396 |
| Email: |
info@carbottpharm.com |
| Products Intro: |
Product Name:4-hydroxynaphthalene-2-sulfonicacid
CAS:3771-14-0
Purity:97% Package:100g；1kg；10kg Remarks:H37140
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| Company Name: |
Shanghai Haohong Pharmaceutical Co., Ltd.
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| Tel: |
400-400-8210725 4008210725 |
| Email: |
malulu@leyan.com |
| Products Intro: |
Product Name:4-Hydroxynaphthalene-2-sulfonic acid
CAS:3771-14-0
Purity:98% Package:1g
|
| Company Name: |
Bide Pharmatech Ltd.
|
| Tel: |
400-1647117 15221909166 |
| Email: |
product02@bidepharm.com |
| Products Intro: |
Product Name:4-Hydroxynaphthalene-2-sulfonic acid
CAS:3771-14-0
Purity:95% Package:250mg;1g;5g; Remarks:BD291774
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| | 4-hydroxynaphthalene-2-sulphonic acid Basic information |
| Product Name: | 4-hydroxynaphthalene-2-sulphonic acid | | Synonyms: | 4-hydroxynaphthalene-2-sulphonic acid;4-hydroxynaphthalene-2-sulfonic acid;4-Hydroxy-2-naphthalenesulfonic acid;2-Naphthalenesulfonic acid, 4-hydroxy- | | CAS: | 3771-14-0 | | MF: | C10H8O4S | | MW: | 224.23 | | EINECS: | 223-212-7 | | Product Categories: | | | Mol File: | 3771-14-0.mol |  |
| | 4-hydroxynaphthalene-2-sulphonic acid Chemical Properties |
| | 4-hydroxynaphthalene-2-sulphonic acid Usage And Synthesis |
| Chemical Properties | 1-Hydroxynaphthalene-3-sulfonic acid [3771-14-0]. (4-hydroxynaphthalene-2- sulfonic acid), C10H8O4S, Mr 224.2, and its salts are very soluble in water. Coupling with diazo compounds occurs in the 2-position with weak diazo compounds, but in the 4-position with strong diazo compounds such as diazotized nitroanilines. Heating with ammonia at 170℃ gives 1,3-naphthalenediamine. | | Uses | 1-Hydroxynaphthalene-3-sulfonic acid is used as a coupling component for the production of direct dyes. | | Preparation | 1-Aminonaphthalene-3-sulfonic acid is heated with dilute sulfuric acid by using high-pressure steam to maintain a pressure of 1 MPa for 20 h. After cooling, screening, and adding salt to the hot liquor, the sodium salt crystallizes on cooling and is isolated in 80 % yield. |
| | 4-hydroxynaphthalene-2-sulphonic acid Preparation Products And Raw materials |
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