Ascorbic acid

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Molecular formula:C
6
H
8
O
6
Molecular weight:176.13
Standard executed:(BP2003/USP27)
CAS Number: 50-81-7

Colorless crystals or a white or almost white, crystalline powder which discolor n exposure to air and moisture; odorless or almost odorless and tasted sour; easily soluble in water and a few partial soluble in ethanol; insoluble in ether and chloroform.


It applies mainly to production of various medicines as clinically important material for supplementary cure practice in different sectors. Being food additives, it acts as superior and reliable agent in nutrition, antiseptic and flour processing aspects. It also helps enhance the immune system of animals as being served in feed additives.

ITEM
STANDARD
RESULT
CHARACTERISTICS
WHITE OR ALMOST WHITE CRYSTALS CRYSTALLINE POWDER
PASS
IDENTIFICATION
POSITIVE
POSITIVE
MELTING POINT
ABOUT 190°C
191.1°C
PH
2.1-2.6
2.36
CLARITY OF SOLUTION
CLEAR
CLEAR
COLOR OF SOLUTION
≤BY
7
< BY
7
COPPER SALT
≤5PPM
<5PPM
HEAVY METALS
≤10PPM
<10PPM
MERCURY
≤1PPM
<1PPM
LEAD
≤2PPM
<2PPM
ARSENIC
≤3PPM
<3PPM
OXALIC ACID
≤0.2%
<0.2%
IRON
≤2PPM
<2PPM
LOSS ON DRYING
≤0.4%
<0.4%
SULPHATED ASH
≤0.1%
<0.06%
SPECIFICA ROTATION
+20.5°-+21.5°
20.85°
ASSAY
99.0-100.5%
99.56%
ORGANIC VOLATILE IMPURITIES
PASS
PASS