аскорбиновая кислота

Commodity : Vitamin C Chemical name : L-(+)-Ascorbic Acid Description : Colorless crystals or a white or almost white, crystalline powder which discolors on exposure to air and moisture; odorless or almost odorless and tasted sour Properties Chemical Formula : C6H8O6 Molecular Weight : 176.13 Specification : Identification : Positive Reaction Melting Point :190 -192 °C PH value : 2.1-2.6 Clarity Of Solution : Clear Colour Of Solution : BY7 max Copper : 5ppm max Heavy Metals (As Pb) : 5ppm max Iron : 2ppm max Arsenic : 3ppm max Mercury : 1ppm max Lead : 2ppm max Oxalic Acid : 0.2% max Sulphate Ash(Residue On Ignition) : 0.1% max Specific Optical Rotation : +20.5°–+21.5° Organic Volatile Impurities : Pass Loss on drying : 0.1% max Assay : 99.5%-100.5% Characteristics: Colorless crystals or a white or almost white, crystalline powder which discolors on 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 melts at 190 -192Centi Grade Degree; PH of 5% W/V solution, 2.1to 2.6; specific optical rotation in a 10%W/V solution, +20.5°to+21.5°. Product specification: BP/USP/EP/JP/FCC Function: 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. Package: 25kg net weight carton box with two plastic inner linings and vacuum-sealed bag. Storage: shielded from light, dry and cool placement, sealed for storage.