L-ASCORBIC ACID
L-ASCORBIC ACID AR/For Biochemistry
(Confirms to IP,USP)
Short Name: L-ASCORBIC ACID
Synonym: L-Threoascorbic acid, Antiscorbutic factor, Vitamin C
Basic Details
Article No.
LG0504
Grade
AR/For Biochemistry
Purity
99.5%
CAS No.
50-81-7
HS Code
2936.2700
Shelf Life
36 Months
Packings Avialable
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
Chemical 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%
Safety Information & Hazard Symbols