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.

Barite

CAS:13462-86-7

Molecular Formula:BaO4S

Alias

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Barium(2+);Sulfate; Barium Sulphate; Barium Sunfate

Brief Introduction

Barium sulfate has a strong ability to absorb X-rays. X-rays cannot be transmitted. It can be used as a medicament (barium meal) for X-ray fluoroscopy of intestines and stomach in medicine. Barium sulfate is the only non-toxic barium salt. It is used in analytical reagent, electronics, instrumentation, metallurgy and other industries. It is used as white pigment, reagent used in gastrointestinal X-ray fluoroscopy, copper smelting flux, specific gravity increasing agent of drilling mud and white filler of rubber, papermaking and plastics.

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

CAS:135-64-8

Molecular Formula:C21H15NO2

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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

2-[(4-Chloro-2-Nitrophenyl)Diazenyl]-N-(2-Methoxyphenyl)-3-Oxobutanamide

CAS:13515-40-7

Molecular Formula:C17H15ClN4O5

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Pigment Yellow 73; 2-[(4-Chloro-2-Nitrophenyl)Azo]-N-(2-Methoxyphenyl)-3-Oxobutyramide; C.I. Pigment Yellow 73; 2-((4-Chloro-2-Nitrophenyl)Azo)-N-(2-Methoxyphenyl)-3-Oxobutanami-De; Pigment Yellow 73;; C.I. Pigment Yellow 73;; C.I. 11738

Brief Introduction

Emulsion paint is mainly used for paper coloring, with good alkali resistance.

Naphthol AS-CA

CAS:137-52-0

Molecular Formula:C18H14ClNO3

Alias

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Naphtanilide EL; 5'-Chloro-3-Hydroxy-2'-Methoxy-2-Naphthanilide; Naphthanilid EL; Azotol Xa; Naphthazol Nel; Cibanaphthol Rca; Naphtazol El; 3-Oxy-Naphthoesaeure-(2)-(5-Chlor-2-Methoxy-Anilid); Acna Naphthol Ca; N-(5-Chloro-2-Methoxyphenyl)-3-Hydroxy-2-Naphthamide; Naphthol-Nel; Azotol Kha; 2-Naphthalenecarboxamide-N-(5-Chloro-2-Methoxyphenyl)-3-Hydroxy; N-(5-Chloro-2-Methoxyphenyl)-3-Hydroxynaphthalene-2-Carboxamide; Naphtholas-CA; Naphthol As-Cl; _|_; Dyestuff

Brief Introduction

Tryptophan as-ca is applicable to the dyeing of cotton, viscose fiber and nylon. It is generally not used for printing. It is a primer for dyeing red. For example, it is red when coupled with jujube base GP and scarlet base GGS, and jujube red when coupled with jujube base GBC. High affinity for cotton.

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