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L-ASCORBIC ACID AR/For Biochemistry

(Confirms to IP,USP)
L-Threoascorbic acid, Antiscorbutic factor, Vitamin C

COAs

Packings

100 g (00100)

500 g (00500)

1PW1200100 1PW1200500
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Article No. 01550 Grade AR/For Biochemistry
Purity 99.5% CAS No. 50-81-7
Molecular Formula C6H8O6 Molecular Weight 176.12
H.S. Code 2936.2700 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

Specifications

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 ([α]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%
Revision Date: 23-Sep-2020

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