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Specification
Character White crystalline powder
Appearance of solution Clear and not more intensively coloured than Bys
Gallic acid,% ≤0.5
Total chlorine,ppm ≤200
Chlorides,ppm ≤100
Zinc,ppm ≤25
Heavy metal(as Pb),ppm ≤10
Sulphate ash,% ≤0.1
Assay,% 97.0-103.0
Melting point,℃ 148-151
Loss on drying,% ≤0.5
Application
1. Propyl gallate is used to protect oils and fats in products from oxidation; it is used in foods, cosmetics, hair products, adhesives, and lubricants.
2.It is used as a triplet state quencher and an antioxidant in fluorescence microscopy.
Storage
sealed container, in dark place, no contact with metals.
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