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L-Ascorbic Acid 99.5% AR For Biochemistry
(Confirms to IP,USP) L-Threoascorbic acid, Antiscorbutic factor, Vitamin C

Product Code.
00308
Grade
Purity
99.5%
CAS No.
50-81-7
Molecular Formula
C8H8O6
Molecular Weight
176.12
H.S.Code
2936.27000
Shelf Life
36 Months

Physical Properties

Physical state at 20 °C
Solid
Colour
White crystalline
Odour
Odorless
pH value
1 - 2.5
Melting point/ Freezing point [°C]
190 - 194 °C
Density [g/cm3]
1.65
Solubility in water [% weight]
176 g/l at 20 °C - completely soluble

Packaging

Specification

Appearance
A white to very pale yellow crystalline powder or colourless crystals; odourless. On exposure to light it gradually darkens.
Assay
99.5-100.5%
Identity (IR)
To confirm the structure
Identification (as per USP, IP)
To comply the tests
Appearance of solution
To comply IP test
Specific optical rotation ([?]20/D; 10% solution)
+20.5° to +21.5°
Light absorption
Absorbance at about 244 nm is about 0.56
Oxalic acid
Max 0.3%
Loss on drying
Max 0.1%
Sulphated ash
Max 0.1%
Chloride (Cl)
Max 0.01%
Sulphate (SO4)
Max 0.002%
Copper (Cu)
Max 0.0005%
Heavy metal (as Pb)
Max 0.001%
Iron (Fe)
Max 0.0002%
Lead (Pb)
Max 0.001%

Safety Information and Hazard Symbols