D-Isoascorbic acid CAS:89-65-6

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1 Kilogram	FOB Price: USD 1.0000

1 Kilogram

FOB Price: USD 1.0000

D-Isoascorbic acid Erythorbic Acid CAS:89-65-6

Name: D-Isoascorbic acid

Synonyms: Erythorbic Acid

CAS:89-65-6

MF: C7H10O6

ITEM	STANDARD
Appearance	White or almost white crystal or crystalline powder
Identification	Positive
Melting point	191 °C ~ 192°C
pH(5%,w/v)	2.2~2.5
pH(2%,w/v)	2.4~2.8
Specific optical rotation	+20.5°~+21.5°
Clarity of solution	Clear
Heavy metals	≤0.0003%
Assay(as C 6H 8O6,%)	99.0~100.5
Copper	≤3mg/kg
Iron	≤2mg/kg
Mercury	≤1mg/kg
Arsenic	≤2mg/kg
Lead	≤2mg/kg
Oxalic acid	≤0.2%
Loss on drying	≤0.1%
Sulphated ash	≤0.1%
Residual solvents(as methanol)	≤500mg/kg
Total plate count (cfu/g)	≤1000
Yeasts & molds (cfu/g)	≤100
Escherichia. Coli/g	Absence
Salmonella/25g	Absence
Staphylococcus aureus/25g	Absence