1,6-Heptadiene-3,5-dione, 1,7-bis(4-hydroxy-3-methoxyphenyl)-, (1E,6E)-
Natural yellow 3
Molecular Formula & Molecular Weight
Molecular Formula: C21H20O6
Molecular Weight: 368.38
Appearance: orange-yellow powder.
Solubility: slightly soluble in water. soluble in ethanol.
Stability: stable. easily oxidized.
Risk: irritation, irritation to skin, eye.
Animal toxicity: rat oral LD50: >2000mg/Kg;
mouse oral LD50: >2000mg/Kg;
mouse intraperitoneal LD50: 1500mg/Kg.
Ecology: may be hazardous to environment. Water body should be given special attention.
Characteristics: excellent antioxidant, anti-inflammatory, anti-virus, antibacterial, dispersing, emulsifying abilities. sensitive to iron, copper. natural dye.
Quality standards & test methods
physical and chemical indexes
Actives*, %, ≥
*: should be marked on molecular weight.
Use as antioxidant.
Conditioning agent, antioxidant in personal care products.
Use as pharmaceutical ingredient.
Use as dye.
Use as dispersing agent, emulsifying agent.