Tartrazine
Chemical name: 4,5-dihydro-5-oxo-1-(4-sulfophenyl)-4-[(4-sulfophenyl)azo]-1H-Pyrazole-3-carboxylic acid, trisodium salt
Product name: Tartrazine; Lemon yellow
CAS No.: 1934-21-0
Molecular formula: C16H9N4O9S2Na3
Molecular weight: 534.36
Structural formula: 
Physical and Chemical Properties: Orange yellow powder, well stability and strong water-insoluble. Low dosage and high efficiency color ratio.
Uses:
• Food pigment, or used in medicine and cosmetics.
• It can cover the bad luster of feed.
• It can broaden the feed resource and reduce feed cost.
• It can improve the luster of animal.
Quality index:
| Ingredient | Tartrazine | Arsenic (As) | Heavy metal (as Pb) |
| Specification | ≥85% | ≤0.0002% | ≤0.002% |
Dosage:
1 compound feed: 30-90g/ton compound feed.
2 15-30g/ton Meal, bread meal class.
3 reference only.
Packing:
PE film bag lined paper-plastic laminated bag, Net wt 25kg/drum.
Storage:
Stored in cool, ventilated and dry place, far away from fire and heat. Transportation: Avoid insolation and rain. Far from hazardous matter and polluted substance. Load gently, no breakage.
