1-Amino-8-Naphtho-4,6-Disulfonic Acid; European K-Acid; 8-Amino-1-Naphthol-3,5-Disulfonic Acid; 8-Amino-1-Hydroxynaphthalene-3,5-Disulphonic Acid; 1-Amino-8-Hydroxy-Naphthalene-4,6-Disulphonic Acid; 4-Amino-5-Hydroxy-1,7-Naphthalenedisulfonic Acid; 1-Hydroxy-8-Aminonaphthalene-3,5-Disulphonic Acid; 1 Amino 8 Hydroxy 4:6 Disulfonic Acid; 5-Hydroxy-4-Aminonaphthalene-1,7-Disulphonic Acid; 4-Amino-5-Hydroxy-Naphthalene-1,7-Disulphonic Acid; K Acid; 4-Amino-5-Naphthol-1,7-Disulfonic Acid; 4-Amino-5-Hydroxynaphthalene-1,7-Disulfonic Acid

Brief Introduction

Used as intermediate of azo dyes, reactive dyes and organic pigments, mainly used in the production of cationic dyes, reactive brilliant red k-2g, etc.

2-Amino-4,8-Naphthalenedisulfonic Acid

CAS:131-27-1

Molecular Formula:C10H9NO6S2

Alias

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3-Aminonaphthalene-1,5-Disulphonic Acid; Acid Iv; Kyselina C; 4,8-Disulfo-2-Naphthalamine; Amino C Acid; 2-Naphthylamine-4,8-Disulphonic Acid; 2-Amino-4,8-Disulpho-Naphthalene; 2-Naphthylamine-4,8-Disulfonic Acid; 2-Aminonaphthalene-4,8-Disulphonic Acid; 3-Amino-1,5-Naphthalenedisulfonic Acid; 4,8-Disulfo-2-Aminonaphthalene; 2-Ethylamino-4,8-Dinaphthalene; 5-Naphthalenedisulfonicacid,3-Amino-1; Beta-Naphthylamine-4,8-Disulfonicacid; Beta-Naphthylaminedisulfonicacid; Kyselina2-Naftylamin-4,8-Disulfonova; (Rs/Sr)-5-Methyl-3-Nitroso-4-Oxazolidinecarboxyli

Brief Introduction

The pure product of 2-naphthylamine-4,8-disulfonic acid is white crystal, soluble in water, and the industrial product is brown liquid or gray paste with blue fluorescence. After sulfonation of naphthalene with fuming sulfuric acid and nitration with mixed acid, 2-nitro-4,8-dinaphthylsulfonic acid magnesium salt was obtained by separating isomers with magnesium salt. Sodium salt was made by adding sodium hydroxide, and then was prepared by reduction. It is a dye intermediate used for the synthesis of reactive dyes and direct dyes, such as reactive yellow, reactive golden yellow, reactive brown and direct light blue b2bl.

7,7'-(Carbonylbis(Azanediyl))Bis(4-Hydroxynaphthalene-2-Sulfonic Acid)

CAS:134-47-4

Molecular Formula:C21H16N2O9S2

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6,6'-Ureylene-Bis(1-Naphthol-3-Sulfonic Acid); 4,4'-Dihydroxy-7,7'-Ureylenedi(Naphthalene-2-Sulphonic Acid); 7,7'-(Carbonyldiimino)Bis[4-Hydroxy-2-Naphthalenesulfonic Acid]; Phosgenated; N,N'-Bis(4-Hydroxy-2-Sulfonaphthalene-7-Yl)Urea; 7,7'-Ureylenebis(4-Hydroxy-2-Naphthalenesulfonic Acid); N,N'-Bis[6-(1-Naphthol-3-Sulfonic Acid)]Urea; 6,6'-Ureylenbis-1-Naphthol-3-Sulfonic Acid

Brief Introduction

7,7'-(Carbonylbis(azanediyl))bis(4-hydroxynaphthalene-2-sulfonic acid) is an intermediate of azo dyes, which is used to produce direct orange s, direct acid resistant scarlet 4BS, etc.

3-Hydroxy-N-2-Naphthyl-2-Naphthamide

CAS:135-64-8

Molecular Formula:C21H15NO2

Alias

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3-Hydroxy-N-(Naphthyl-(2))-Naphthamid-(2); Dragonthol Sw; 3-Hydroxy-N-Naphthalen-2-Ylnaphthalene-2-Carboxamide; Naphtoelan Sw; Naphthoide Sw; 3-Hydroxy-Naphthalene-2-Carboxylic Acid Naphthalen-2-Ylamide; 3-Hydroxy-[2]Naphthoic Acid-[2]Naphthylamide; 3-Hydroxynaphthalene-2-Carboxylic Acid Naphthalen-2-Yl Amide; Azoic Coupling Component 7; Naphthanilid Sw; 2-Hydroxy-3-Naphthoic Acid 2-Naphthylamide; 3-Hydroxy-N-(Naphthalen-2-Yl)-2-Naphthamide; 3-Hydroxy-N-(2-Naphthyl)-2-Naphthamide; Naphthanil Sw; 3-Hydroxy-[2]Naphthoesaeure-[2]Naphthylamid; Cibanaphthol Ra; Naphthol As-Sw; Acco Naphthol As-Sw; Naphtanilide Sw; Acnanaphthold; Brentholbn; Amarthol As-Sw; Dycosthol As-Sw; Tulathol As-Sw

Brief Introduction

Chromophenol AS-SW is mainly used for cotton dyeing. It is a common primer for cotton yarn dyeing red and brown. It is also used for dyeing vinylon, viscose fiber, silk and nylon. It can be coupled with large red base RC and red base KB to dye brilliant red; Dye blue by coupling with blue salt; Dye black by coupling with black base or black salt. It can also be used instead of tryptophan AS

Diphenyl Sulfide

CAS:139-66-2

Molecular Formula:C12H10S

Alias

More Information

Phenyl Sulfide; Benzene, 1,1‘-Thiobis-; Phenylsulfanylbenzene; Diphenyl Sulphide

Brief Introduction

Used as pesticide, medicine and dye intermediate. 2,4-dichlorophenol can be synthesized from this product, which is used to synthesize herbicide, 2,4-drop, epbp, dukesan, etc; In medicine, it is used to synthesize sulfur dichlorophenol and so on.

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