タイトルまたは説明

Lemon yellow, Tartrazine, Food additives

Food lemon yellow;Tartrazine;FD & C Yellow No.5;C.I.Acid yellow *3;C.I.Food yellow 4(****0);Hydrazine yellow

Molecular formula : C*6H9N4Na3O9S2
MW : **4.**0
CAS No. :********0

nature : orange yellow powder. *1 ° Cis as follows : *1.8% water, *0% 9% ethanol, *0% ethanol 3% soluble glycerin, propylene glycol, is not soluble in oil, and an acid-azo dye, heat, acid, light stability, salt tolerance are good, citric acid and tartaric acid solution such as a very stable. Less oxidation resistance, alkali encountered slightly redden, reduction when bleaching. 

Preparation : sulfanilic acid by diazotization after *-(4'-sulfophenyl) - *-hydroxy**-pyrazolone coupling in the system; Can also be dual hydroxy sodium tartrate and Phenylhydrazine right acid condensation and alkalization will generate the pigments used salt salting-out , generated from refining.

 Product Application
1) Coating & Paint, antirust pigment;
2)Tinting of Rubber, Glass, Plastic product; Scagliola, Walls;
3)Raw materials of the chemical products contain iron such as oil painting and concoctive painting.

Chrome Yellow Specification