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.

1,4-Bis(4-Cyanostyryl)Benzene

CAS:13001-40-6

Molecular Formula:C24H16N2

Alias

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4,4'-(1,4-Phenylenebis(Ethene-2,1-Diyl))Dibenzonitrile; Optical Brightening Agent Er-Ⅲ; 1,4'-Bis(2-Cyanostyryl) Benzole; Optical Brightener 199; C.I.199; Fluorescent Brightener 199; 4,4'-(P-Phenylenediethene-2,1-Diyl)Bisbenzonitrile; Benzonitrile, 4,4-(1,4-Phenylenedi-2,1-Ethenediyl)Bis-

Brief Introduction

It is suitable for whitening and brightening polyester (polyester) fiber. It also has a good whitening effect on polyethylene, polypropylene and other plastics and products.

Chromium (Iii) Hydroxide N-Hydrate

CAS:1308-14-1

Molecular Formula:CrH3O3

Alias

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Chromicacid(H3Cro3); Chromichydrate; Chromichydroxide; Chromicoxide,Hydrous; Chromicoxidegel; Chromium(3+)Hydroxide; Chromium(Iii)Hydroxide; Chromic(Iii)Hydroxide

Brief Introduction

For the preparation of trivalent chromium salts and chromium trioxide, chemical reagents. Also used in paint pigments and wool treatment etc.

2-Amino-4,8-Naphthalenedisulfonic Acid

CAS:131-27-1

Molecular Formula:C10H9NO6S2

Alias

More Information

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.

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