Vc L (+) -Ascorbic Acid CAS No. 50-81-7

• Function: Vitamins and Minerals Deficiency Drug
• Grade Standard: Medicine Grade
• Type: Chemical Reagent
• State: White Crystalline Powder
• Volatile: Not Volatile
• Standard: Bp2018/USP39/Ep9.0/FCC8/E300
• Model NO.: SAMREAL-0107
• Transport Package: Drum
• Specification: 25kg/drum
• Trademark: samreal
• Origin: China

Product Description

Vc L (+) -Ascorbic Acid CAS No. 50-81-7

Items	Standard
Appearance	White or almost white, crystalline powder or colourless crystals
Melting point	About 190ºC,with decomposition
Infrared Absorption spectrum	Infrared absorption spectrum accord with the reference spectrum of ascorbic acid CRS
pH(With 5% water solution)	2.1~2.6
pH(With 2% water solution)	2.4~2.8
Appearance of solution	Clarity:clear;Colour:≤BY
Specific optical rotation	+20.5°~+21.5°
Loss on Drying	≤0.4%
Impurity E	≤0.2%
Related substance	Impurity C:≤0.15%:
	Impurity D:≤0.15%;
	Unspecified impurities:0.10%; Total impurities:≤0.2%
Copper	≤5.0ppm
Iron	≤2.0ppm
Arsenic	≤3.0ppm
Lead	≤2.0ppm
Items	Standard
Mercury	≤0.1ppm
Cadmium	≤1.0ppm
Heavy metals	≤10ppm
Sulphate ash	≤0.01%
Residual solvents	Meets the requirements
Assay	99.0%~100.5%

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