Acid Yellow 23 CAS 1934-21-0 (642-62-6) Tartrazine C.I.19140

Acid Yellow 23

Name	Acid Yellow 23
Synonyms	C.I.19140; Tartrazine; Food Yellow 4
Molecular Structure
Molecular Formula	C16H9N4Na3O9S2
Molecular Weight	534.36
CAS Registry Number	1934-21-0 (642-62-6)
EC Number	217-699-5

Specification:

Uses:

1. Various food coloring: EU code E102, US FD&C Yellow No. 5.

2. Drugs and cosmetics: used for tablet coating, capsule coloring, and cosmetic color matching.

3. Industrial and daily necessities: used for dyeing textiles (wool, silk), coatings, inks, plastics, toys, stationery, etc.

4. Research and analysis: used as a biological staining agent, chemical indicator (such as precipitation titration), and analytical standard.