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| | 1-Naphthol-5-sulfonic acid Basic information |
| Product Name: | 1-Naphthol-5-sulfonic acid | | Synonyms: | 1-NAPHTHOL-5-SULFONIC ACID SODIUM SALT TECH;1,5-Oxy acid;1-Naphthalenesulfonic acid,5-hydroxy-;5-HYDROXY-1-NAPHTHALENESULFONIC ACID SODIUM SALT TECH;5-Hydroxy-1-naphthalenesulfonic acid;5-Hydroxynaphthalene-1-sulphonic acid;1-NAPHTHOL-5-SULFONICACID(L-ACID,DRY);5-hydroxy-1-naphthalenesulfonicaci | | CAS: | 117-59-9 | | MF: | C10H8O4S | | MW: | 224.23 | | EINECS: | 204-199-7 | | Product Categories: | Intermediates of Dyes and Pigments | | Mol File: | 117-59-9.mol |  |
| | 1-Naphthol-5-sulfonic acid Chemical Properties |
| Melting point | 110~112℃ | | density | 1.549±0.06 g/cm3(Predicted) | | storage temp. | Sealed in dry,Room Temperature | | pka | 0.26±0.40(Predicted) | | Appearance | White to off-white Solid | | InChI | InChI=1S/C10H8O4S/c11-9-5-1-4-8-7(9)3-2-6-10(8)15(12,13)14/h1-6,11H,(H,12,13,14) | | InChIKey | YLKCHWCYYNKADS-UHFFFAOYSA-N | | SMILES | C1(S(O)(=O)=O)=C2C(C(O)=CC=C2)=CC=C1 | | CAS DataBase Reference | 117-59-9(CAS DataBase Reference) | | EPA Substance Registry System | 1-Naphthalenesulfonic acid, 5-hydroxy- (117-59-9) |
| | 1-Naphthol-5-sulfonic acid Usage And Synthesis |
| Chemical Properties | Off-white to reddish paste. Dissolved in water. 1-Hydroxynaphthalene-5-sulfonic acid [117-59-9]. (5-hydroxynaphthalene-1-sulfonic acid), oxy L acid, Azurin acid, C10H8O4S, Mr 224.2, and its salts are very soluble in water, but the sodium salt may be precipitated from solution by salting out. Coupling with diazo compounds normally occurs in the 2-position but takes place in the 4-position with stronger diazo compounds such as diazotized nitroanilines. Sulfonation yields 1-hydroxynaphthalene-2,5-disulfonic acid; vigorous alkali fusion gives 1,5-dihydroxynaphthalene. Bromination in acetic acid yields 2,3-dibromo-1,4-naphthoquinone-5-sulfonic acid. | | Uses | 1-Naphthol-5-sulfonic acid is used to prepare dyes and organic pigments, such as direct dark blue L, pigment purple sauce BLC, lake purple red CK, etc. It is also used to prepare photoresist sensitizer 215. | | Synthesis | 1-Naphthol-5-sulfonic acid is obtained from 1-naphthylamine-5-sulfonic acid by salification, hydrolysis and neutralization. |
| | 1-Naphthol-5-sulfonic acid Preparation Products And Raw materials |
| Raw materials | Naphthalene | | Preparation Products | Acid black 24-->[1,1'-Biphenyl]-3,3'-dicarboxylicacid,4-[2-[1-hydroxy-6-(phenylamino)-3-sulfo-2-naphthalenyl]diazenyl]-4'-[2-(1-hydroxy-5-sulfo-2-naphthalenyl)diazenyl]-,sodium salt (1:4)-->MORDANT BROWN 15-->Acid Red 27-->Acid Blue 349-->Acid Brown 4-->AZO BLUE-->1-Naphthalenesulfonic acid, 6-[[5-chloro-4-[(2-hydroxy-6-sulfo-1-naphthalenyl)azo]-2-methoxyphenyl]azo]-5-hydroxy-, disodium salt-->Benzoic acid, 2-hydroxy-3(or 5)-[[4-[(1-hydroxy-5-sulfo-2-naphthalenyl)azo]-1-naphthalenyl]azo]-, disodium salt-->Acid mordant Brown 92-->Direct Blue 306-->6-(5-Chloro-2-hydroxy-4-sulfophenylazo)-5-hydroxy-1-naphthalenesulfonic acid disodium salt-->2-Hydroxy-5-[[4-[(1-hydroxy-5-sodiosulfo-2-naphthalenyl)azo]-1-naphthalenyl]azo]benzoic acid sodium salt-->sodium 5-hydroxy-6-(naphthylazo)naphthalenesulphonate-->disodium 5-hydroxy-6-[[2-methoxy-5-[[2-(sulphonatooxy)ethyl]sulphonyl]phenyl]azo]naphthalenesulphonate-->Mordant Black 29-->1-Naphthalenesulfonic acid, 6,6'-[(3,3'-dimethoxy[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[5-hydroxy-, disodium salt-->disodium 5-hydroxy-6-[(4-sulphonatonaphthyl)azo]naphthalenesulphonate |
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