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1-Naphthol-3,6-disulfonic acid

1-Naphthol-3,6-disulfonic acid Structure
CAS No.
578-85-8
Chemical Name:
1-Naphthol-3,6-disulfonic acid
Synonyms
1-Naphthol-3,6-disul;1-Naphthol-3,6-disulfonic;1-Naphthol-3,6-disulfonic acid;Sodium1-naphthol-3,6-disulfonate;1-NAPHTHOL-3,6-DISULFONIC ACID 98%;1-Hydroxy-3,6-naphthalenedisulfonic acid;1-Hydroxynaphthalene-3,6-disulfonic acid;4-hydroxynaphthalene-2,7-disulfonic acid;4-Hydroxy-2,7-Naphthalenedisulfonic Acid;4-hydroxynaphthalene-2,7-disulphonic acid
CBNumber:
CB0512345
Molecular Formula:
C10H8O7S2
Molecular Weight:
304.3
MOL File:
578-85-8.mol
Modify Date:
2023/11/1 14:37:45
Request For Quotation

1-Naphthol-3,6-disulfonic acid Properties

Density 1.816±0.06 g/cm3(Predicted)
pka -0.14±0.40(Predicted)
CAS DataBase Reference 578-85-8(CAS DataBase Reference)
EPA Substance Registry System 2,7-Naphthalenedisulfonic acid, 4-hydroxy- (578-85-8)

SAFETY

Risk and Safety Statements

Symbol(GHS) 
GHS05
Signal word  Danger
Hazard statements  H314
Precautionary statements  P260-P264-P280-P301+P330+P331-P303+P361+P353-P363-P304+P340-P310-P321-P305+P351+P338-P405-P501

1-Naphthol-3,6-disulfonic acid Chemical Properties,Uses,Production

Chemical Properties

Off-white paste. 1-Hydroxynaphthalene-3,6-disulfonic acid [578-85-8]. (4-hydroxynaphthalene-2,7- disulfonic acid), RG acid, Violet acid, C10H8O7S2, Mr 304.3: the free acid ( pKa 8.56) and its alkalimetal salts are readily soluble in water, but the acid sodium salt can be precipitated from concentrated solution with salt. Sulfonation with oleum at 125℃ gives a tetrasulfonic acid, and amination with ammonia and ammonium chloride at 160℃ gives a mixture of 3-amino1-hydroxynaphthalene-6-sulfonic acid and 6- amino-1-hydroxynaphthalene-3-sulfonic acid. Alkali fusion at 170℃ gives mainly 1,6-dihydroxynaphthalene-3-sulfonic acid, and at 250℃ yields 1,3,6-trihydroxynaphthalene. Diazo coupling takes place in the 2-position.

Production Methods

Naphthalene-1,3,6-trisulfonic acid is heated with 50 % sodium hydroxide at 180 C for 15 h in an autoclave. After dilution with water, the product is salted out as the monosodium salt and purified by washing with brine.

1-Naphthol-3,6-disulfonic acid Preparation Products And Raw materials

Raw materials

Sodium hydroxide NAPHTHALENE-1,3,6-TRISULFONIC ACID

Preparation Products

GERANINE G 4-Hydroxy-3-[[4'-[(1-hydroxy-6-phenylamino-3-sodiosulfo-2-naphthalenyl)azo]-1,1'-biphenyl-4-yl]azo]naphthalene-2,7-disulfonic acid disodium salt 2,7-Naphthalenedisulfonic acid, 3-[[3,3'-dimethyl-4'-[[3-oxo-1-[(phenylamino)carbonyl]propyl]azo][1,1'-biphenyl]-4-yl]azo]-4-hydroxy-, disodium salt disodium 3-[[4-(acetylamino)phenyl]azo]-4-hydroxynaphthalene-2,7-disulphonate 4-Hydroxy-3-[[4'-[(1-hydroxy-4-sulfo-2-naphtyl)azo]-1,1'-biphenyl-4-yl]azo]-2,7-naphthalenedisulfonic acid trisodium salt
disodium 4-hydroxy-3-[[4'-[(2-hydroxynaphthyl)azo]-2,2'-dimethyl[1,1'-biphenyl]-4-yl]azo]naphthalene-2,7-disulphonate 4-Hydroxy-3-(1-naphthalenylazo)-2,7-naphthalenedisulfonic acid disodium salt Solvent Red 32 2,7-Naphthalenedisulfonic acid, 4-hydroxy-3-(2-naphthalenylazo)-, disodium salt ACID RED 8
Acid Red 111 trisodium 4-hydroxy-3-[[4'-[(1-hydroxy-4-sulphonato-2-naphthyl)azo]-3,3'-dimethoxy[1,1'-biphenyl]-4-yl]azo]naphthalene-2,7-disulphonate Direct Violet 27 4-Hydroxy-3-[[4'-[[4-[[(4-methylphenyl)sulfonyl]oxy]phenyl]azo]-1,1'-biphenyl-4-yl]azo]-2,7-naphthalenedisulfonic acid disodium salt
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1-Naphthol-3,6-disulfonic acid Suppliers

Global( 95)Suppliers
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PARAGON FINE AND SPECIALITY CHEMICAL PVT LTD 58
Harsh Organo Chem Pvt Ltd 58
Shubhlaxmi Industries 58
Shree Ganesh Dye Chem 58
Shubhlaxmi Industries 58
career henan chemical co 58
Chongqing Chemdad Co., Ltd 58
Shaanxi Dideu Medichem Co. Ltd 58
SIMAGCHEM CORP 58
Hefei TNJ Chemical Industry Co.,Ltd. 58

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1-NAPHTHOL-3,6-DISULFONIC ACID 98% 1-Naphthol-3,6-disulfonic acid 1-Hydroxy-3,6-naphthalenedisulfonic acid 1-Hydroxynaphthalene-3,6-bissulfonic acid 1-Hydroxynaphthalene-3,6-disulfonic acid 1-Naphthol-3,6-disul 4-Hydroxy-2,7-Naphthalenedisulfonic Acid 4-hydroxynaphthalene-2,7-disulfonic acid 1-NAPHTHOL-3,6-DISULFONIC ACID ≡96%(HPLC) 4-hydroxynaphthalene-2,7-disulphonic acid 1-Naphthol-3,6-disulfonic Sodium1-naphthol-3,6-disulfonate 2,7-Naphthalenedisulfonic acid, 4-hydroxy- 578-85-8 C10H5OHSO3H2 Intermediates of Dyes and Pigments Organic acids