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

Product Name
2,NAPHTHOL-3,6,8-TRISULFONIC ACID
CAS No.
6259-66-1
Chemical Name
2,NAPHTHOL-3,6,8-TRISULFONIC ACID
Synonyms
Einecs 228-407-0;2,NAPHTHOL-3,6,8-TRISULFONIC ACID;7-Hydroxynaphthalin-1,3,6-trisulfonsure;7-Hydroxy-1,3,6-naphthalenedisulfonicacid;2-Hydroxynaphthalene-3,6,8-trisulfonic acid;7-Hydroxy-1,3,6-naphthalenetrisulfonic acid;7-hydroxynaphthalene-1,3-6-trisulfonic acid;7-hydroxynaphthalene-1,3,6-trisulphonic acid;1,3,6-Naphthalenetrisulfonic acid, 7-hydroxy-
CBNumber
CB5317125
Molecular Formula
C10H8O10S3
Formula Weight
384.36
MOL File
6259-66-1.mol
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2,NAPHTHOL-3,6,8-TRISULFONIC ACID Property

Density 
2.019±0.06 g/cm3(Predicted)
pka
-0.67±0.40(Predicted)
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Hazard and Precautionary Statements (GHS)

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2,NAPHTHOL-3,6,8-TRISULFONIC ACID Chemical Properties,Usage,Production

Chemical Properties

2-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.

Uses

The acid is used as an azo coupling component in, e.g., C.I. Solvent Red 31.

Production Methods

2-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

Raw materials

Preparation Products

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

Shaanxi Dideu Newmaterial Co., Ltd.
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029-63373950 15353716720
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1052@dideu.com
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China
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Henan Tianfu Chemical Co.,Ltd.
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+86-0371-55170693 +86-19937530512
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0371-55170693
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info@tianfuchem.com
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6259-66-1, 2,NAPHTHOL-3,6,8-TRISULFONIC ACIDRelated Search:


  • 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-
  • 7-Hydroxynaphthalin-1,3,6-trisulfonsure
  • 6259-66-1