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Chemicals(Medicine intermediate)

PRODUCT NAME: ASCORBIC ACID USP　　　　　　　　　　(VIT C)

TEST ITEMS	TEST PARAMETERS	TEST RESULTS
APPEARANCE	POWDER	PASS
ODOR	NO ABNORMAL ODOR	PASS
TASTE AND ODOR	ACIDIC TASTE WITH NO ABNORMAL TASTE OR ODOR	PASS

IDENTIFICATION	POSITIVE	POSITIVE
MELTING POINT	ABOUT 190°C	191°C
PH ( 5%, W/V )	2.1 - 2.6	2.2
SPECIFIC OPTICAL ROTATION	+20.5° - +21.5°	+20.9°
CLARITY AND COLOR OF SOLUTION	CLEAR, ≤BY7	CLEAR, <BY7
COPPER	≤0.0003%	<0.0003%
HEAVY METALS	≤0.001%	<0.0003%
IRON	≤0.0002%	<0.0002%
MERCURY	≤0.0001%	<0.0001%
ZINC	≤0.0025%	<0.0025%
ARSENIC	≤0.0003%	<0.0003%
LEAD	≤0.0002%	<0.0002%
OXALIC ACID	≤0.2%	<0.2%
LOSS ON DRYING	≤0.1%	<0.05%
SULPHATED ASH	≤0.1%	0.02%
ASSAY	99.0 - 100.5%	99.8%
ORGANIC VOL. IMPURITIES		MEETS USP REQUIREMENT