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Solvent Yellow 2 Dyes

Product info Type: Vat Dyes, Vat Yellow Dyes Product Name: Vat Yellow 2 Color Index: 2 CAS No.: 2465-27-2 EINECS: 219-567-2 Molecular Formula: C17H22ClN3 Product Description
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Product Introduction

Product Solvent Yellow 2 Dyes info as below :


Type: Vat Dyes, Vat Yellow Dyes
Product Name: Vat Yellow 2
Color Index: 2
CAS No.: 2465-27-2 
EINECS: 219-567-2 
Molecular Formula: C17H22ClN3

 Product Description

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1.Chemical properties:Golden flakes or powder. Melting point 114-117°C. Soluble in alcohol, ether, chloroform, benzene, petroleum ether and inorganic acid, insoluble in water.


2.Use:This product is an acid-base indicator. pH2.9 (red)-4.0 (yellow). Indicator for non-aqueous titration and determination of free hydrochloric acid in gastric juice.Used as an acid-base indicator, an indicator for non-aqueous titration and the determination of free hydrochloric acid in gastric juice



3.production method :It is obtained by diazotizing aniline with sodium nitrite and coupling with xylene amine. Add aniline slowly to concentrated hydrochloric acid with crushed ice, and add sodium nitrite solution at 0-5°C for diazotization reaction. Then add xylene amine to the diazonium salt. Control the temperature in Chemicalbook to below 5°C. Add industrial sodium acetate while stirring. After stirring for 3 hours, add a small amount of sodium acetate and filter out the yellow precipitate to obtain the crude product. After drying, it is recrystallized with toluene and then recrystallized with ethanol to obtain the finished product dimethyl yellow.


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FAQ:


1.Are you traders or factories?

We are factory.


2.Do you provide samples for free?

Yes, samples are free.And we are providing 20 grams of each sample.


3.What certificates do you have?

OEKOTEX, BLUESIGN, ZDHC; MSDS, TDS identification


    

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