2,NAPHTHOL-3,6,8-TRISULFONIC ACID

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Products Intro: Product Name:7-Hydroxynaphthalin-1,3,6-trisulfonsure
CAS:6259-66-1
Purity:99% Package:25KG;5KG;1KG
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Products Intro: Product Name:2,NAPHTHOL-3,6,8-TRISULFONIC ACID
CAS:6259-66-1
Purity:98% Package:25kg
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Products Intro: Product Name:"7-Hydroxy-1,3,6-naphthalenetrisulfonic Acid"
CAS:6259-66-1
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2,NAPHTHOL-3,6,8-TRISULFONIC ACID Basic information
Product Name:2,NAPHTHOL-3,6,8-TRISULFONIC ACID
Synonyms:2,NAPHTHOL-3,6,8-TRISULFONIC ACID;7-hydroxynaphthalene-1,3,6-trisulphonic acid;7-hydroxynaphthalene-1,3-6-trisulfonic acid;7-Hydroxy-1,3,6-naphthalenedisulfonicacid;7-Hydroxy-1,3,6-naphthalenetrisulfonic acid;2-Hydroxynaphthalene-3,6,8-trisulfonic acid;Einecs 228-407-0;1,3,6-Naphthalenetrisulfonic acid, 7-hydroxy-
CAS:6259-66-1
MF:C10H8O10S3
MW:384.36
EINECS:2284070
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Mol File:6259-66-1.mol
2,NAPHTHOL-3,6,8-TRISULFONIC ACID Structure
2,NAPHTHOL-3,6,8-TRISULFONIC ACID Chemical Properties
density 2.019±0.06 g/cm3(Predicted)
pka-0.67±0.40(Predicted)
Safety Information
MSDS Information
2,NAPHTHOL-3,6,8-TRISULFONIC ACID Usage And Synthesis
Chemical Properties2-Hydroxynaphthalene-3,6,8-trisulfonic acid [6259-66-1]. (7-hydroxynaphthalene-1,3,6-trisulfonic acid), C10H8O10S3, Mr 384.3, and its alkali-metal salts are readily soluble in water; nevertheless, the sodium salt is obtainable by salting out. Amination at 240℃ gives 2-aminonaphthalene-3,6,8-trisulfonic acid. Alkali fusion gives a mixture of dihydroxynaphthalenedisulfonic acids and finally 4,6,7- trihydroxynaphthalene-2-sulfonic acid. Diazo coupling occurs slowly in the 1-position.
UsesThe acid is used as an azo coupling component in, e.g., C.I. Solvent Red 31.
Production Methods2-Naphthol is heated with sulfuric acid monohydrate at 115℃ for 3 h. The reaction mixture is cooled and 65 % oleum is added, followed by heating at 115℃ for 12 h, after which it is poured into water. Salt is then added to the hot solution and the sodium salt of the product crystallizes. Further purification is effected by redissolving in water and salting out.
2,NAPHTHOL-3,6,8-TRISULFONIC ACID Preparation Products And Raw materials
Preparation ProductsSolvent Red 110-->PONCEAU 6R-->Solvent Red 31
Tag:2,NAPHTHOL-3,6,8-TRISULFONIC ACID(6259-66-1) Related Product Information
7-hydroxynaphthalene-1-sulphonic acid 3-Hydroxynaphthalene-2,7-disulphonic acid 2,NAPHTHOL-3,6,8-TRISULFONIC ACID PONCEAU 6R 1,6-Naphthalenedisulfonic acid 1,3,(6,7)-Naphthalenetrisulfonic acid trisodium salt hydrate 2-Naphthol-6,8-disulfonic acid