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100 Kilogram |
FOB Price: USD 4.5000 |
Ascorbic acid Vitamina C Ascorbic acid 50-81-7
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Raw materials from chinese origine and after loading into container
Raw materials from chinese origin
Characteristics:white monoclinic system crystals or crystalline powder. Metling point 190C -192C, odorless but tastes sour. Color turns light yellow after long time storage. The product is easily soluble in water , slightly soluble in ethanol, insoluble in chloroform and ether and its water solution appears acidic. The PH value of the 5% water solution is 2.1-2.6 and the ratio rotation of the 10% (W/V) water solution is +20.5 . -+21.5 .
Description
|
White or almost white crystals
or crystalline power
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identification
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Positive Reaction
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Melting Point
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187 192
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pH
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2.1 2.6
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Clarity of Solution
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Clear
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Color of Solution
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≤BY7
|
Copper
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≤5ppm
|
Heavy Metals
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≤10ppm
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Iron
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≤2ppm
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Mercury
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≤1ppm
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Lead
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≤2ppm
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Arsenic
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≤3ppm
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Oxalic Acid
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≤0.2%
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Loss on drying
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≤0.4%
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Residue on ignition
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≤0.1 %
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Specfic Rotation
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+20.5 ° +21.5°
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Organic Volatile Impurities
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Pass
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Assay
|
99.0-100.5%
|
CAS NO:119-36-8
CAS NO:50-81-7
CAS NO:50-81-7
CAS NO:50-81-7
CAS NO:50-81-7
CAS NO:119-36-8
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