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| | amino-R acid Basic information |
| Product Name: | amino-R acid | | Synonyms: | 3-aminonaphthalene-2,7-disulphonic acid;amino-R acid;3-aminonaphthalene-2,7-disulfonic acid;Amido R acid;2,7-Naphthalenedisulfonic acid, 3-amino-;3-azanylnaphthalene-2,7-disulfonic acid;2-Aminonaphthalene-3,6-disulfonic acid;2-amino-3,6-naphthalenedisulphonic acid | | CAS: | 92-28-4 | | MF: | C10H9NO6S2 | | MW: | 303.31 | | EINECS: | 202-143-6 | | Product Categories: | | | Mol File: | 92-28-4.mol |  |
| | amino-R acid Chemical Properties |
| RIDADR | 1759 | | HazardClass | 8 | | PackingGroup | III |
| | amino-R acid Usage And Synthesis |
| Uses | Amino R acid is used mainly as an intermediate for conversion to 2-amino-3-hydroxynaphthalene-6-sulfonic acid by caustic fusion at 250℃. | | Uses | Manufacture of dyes. | | Production Methods | The sodium salt of 2-hydroxynaphthalene-3,6-disulfonic acid is aminated by heating with ammonia and ammonium bisulfite for 24 h at 160℃. The charge is added to excess lime and heated to remove excess ammonia, and calcium sulfite is filtered off. The productis precipitated by acidification ofthe filtrate and purified by redissolving the paste in alkali and reprecipitating with acid. The yield is 90 %. |
| | amino-R acid Preparation Products And Raw materials |
| Preparation Products | BRILLIANT PURPURIN R-->C.I.Reactive Yellow 26-->3-Amino-4-[[4'-[(2-amino-8-hydroxy-6-sodiosulfo-1-naphthalenyl)azo]-1,1'-biphenyl-4-yl]azo]naphthalene-2,7-disulfonic acid disodium salt-->2,7-Naphthalenedisulfonic acid, 3-amino-4-[[4'-[(4-ethoxyphenyl)azo]-3,3'-dimethyl[1,1'-biphenyl]-4-yl]azo]-, disodium salt-->2,7-Naphthalenedisulfonic acid, 4,4'-[(3,3'-dimethyl[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[3-amino-, tetrasodium salt-->Food Yellow 7-->vital new red-->ACID ORANGE 45-->3-Amino-4-[[4'-[(6-amino-1-hydroxy-3-sodiosulfo-2-naphthalenyl)azo]-1,1'-biphenyl-4-yl]azo]naphthalene-2,7-disulfonic acid disodium salt-->3-Amino-4-[[4'-[(4-ethoxyphenyl)azo]-1,1'-biphenyl-4-yl]azo]-2,7-naphthalenedisulfonic acid disodium salt-->tetrasodium 4,4'-[(3,3'-dichloro[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[3-aminonaphthalene-2,7-disulphonate] |
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