It is mainly used for preparing phenol by alkali melting and resorcinol. It is often used as a catalyst in esterification and dehydration reactions; Dye intermediate.

2-Formylbenzenesulfonic Acid

CAS:91-25-8

Molecular Formula:C7H5NaO4S

Alias

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O-Sulfobenzaldehyde; 2-Sulfobenzaldehyde; Benzenesulfonic Acid, 2-Formyl-; 2-Formylbenzenesulfonate; Sodium 2-Formylbenzenesulphonate Dihydrate; Ortho-Formyl Benzene Sulfonic Acid; O-Sulfobenzaldehyd; O-Formyl-Benzenesulfonic Acid

Brief Introduction

This product is mainly used as dye intermediate.

Phosgene

CAS:75-44-5

Molecular Formula:CCl2O

Alias

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Phlsgene; Phosgenegas; Fosgen; Carbonic Dichloride; Dichloro-Ketone; Carbonyl Chloride; Combatgas; Phosgen; Thionyl Chloride; Fosgene; Fosgeen

Brief Introduction

Phosgene, viewed from the chemical structure, is a diacyl chloride derivative of carbonic acid. It is a very active electrophilic reagent and easy to hydrolyze. It is a severe asphyxiating toxic gas. Inhalation of high concentration can cause pulmonary edema. The toxicity is about 10 times greater than that of chlorine, but it has no accumulation effect in the body. Its common name is translated from Greek φως (light) + Γίνει (generated). Phosgene was originally produced by the decomposition of chloroform by light, so it has this name.

2-Hydroxy-6-Nitro-4-Sulfonaphthalene-1-Diazonium

CAS:50412-00-5

Molecular Formula:C10H5N3O6S

Alias

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Einecs 256-582-3; 1-Naphthalenediazonium,2-Hydroxy-6-Nitro-4-Sulfo; 2-Hydroxy-6-Nitro-4-Sulphonaphthalene-1-Diazonium; 6-Nitro-1-Diazo-2-Naphthol-4-Sulfonic acid; N-(Propan-2-Ylideneamino)Propanamide

Brief Introduction

It can be used as dye intermediate.

Naphthol AS-G

CAS:91-96-3

Molecular Formula:C22H24N2O4

Alias

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N,N'-Bis(Acetoacetyl)-o-Toluidine; N,N'-(3,3'-Dimethyl-4,4'-Biphenyldiyl)bis(3-Oxobutanamide); Butanamide, N,N‘-(3,3‘-Dimethyl[1,1‘-Biphenyl]-4,4‘-diyl)bis[3-oxo-; Naphthol AS-G;; Cibanaphthol AG;; Acna Naphthol G;; Diacetylacetotolidide;; Naphtanilide G;; Naphthanil G;; Naphthoide G

Brief Introduction

It is mainly used for dyeing and printing of cotton yarn, cotton fabric, artificial cotton, bath towel, viscose fiber, silk and acetate fiber. It can also be used to make fast pigment yellow, etc

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