Shanghai Fine Chemicals

API • Vitamins • Food ingredients
Veterinary Injection & Premix

Ascorbic Acid

Testing Items     Specification   
APPEARANCE WHITE OR ALMOST WHITE,CRYSTAL OR CRYSTALLINE POWDER
IDENTIFICATION POSITIVE
MELTING POINT 191℃~192℃
PH 2.2~2.5
CLARITY OF SOLUTION CLEAR
HE**Y METALS ≤0.0003%
ASSAY 99.0%~100.5%
COPPER (ppm) ≤3.0
IRON (ppm) ≤2.0
MERCURY (ppm) ≤1.0
ARSENIC ≤0.0002%
LEAD ≤0.0002%
OXALIC ACID ≤0.2%
LOSS ON DRYING ≤0.1%
SULPHATED ASH ≤0.1%
RESIDUAL SOLVENTS(as methanol ) (ppm) ≤500
TOTAL PLATE COUNT(cfu/g) ≤1000
YEASTS & MOLDS(cfu/g) ≤100
ESCHERICHIA.COLI  ABSENCE
SALMONELLA ABSENCE
STAPHYLOCOCCUS AUREUS  ABSENCE