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L(+)-Ascorbic acid 50-81-7 supplier Vitamin C
Wuhan Xinru Chemical Industry Co.,Ltd founded in 2006, engaged in R&D, producing and marketing barium salts, sodium salts, fertilizer and medical intermediates.
We have several stock-holding factories, based on strong R&D ability, advanced production technology and experienced team; pluses international trade office in Wuhan, we can offer high and stable quality products with quick response and service.
Since 2006,we have already developed and established a very good relationship with different reputed customers in EU, Egypt, Canada, Korea, USA, Chile, Turkey, Thailand etc.Our products widely used in water purification,magnet material, rubber, ceramic,glass,painting, powder coating, plastic industry, pharmacy and so on.
OUR MISSION: satisfy customers needs ,serve wholeheartedly and sincerely.
OUR SERVICE: supply excellent quality product with competitive price and fast
shipment and timely delivery.
In the light of customer first, excellent quality, competitive price, good service, the principle of mutual benefit , to serve our new and old customers.
All we want is win-win busines.
Welcome to our company and warm welcome to inquiry me about all of our products, we will provide the competitive price for it.
We are sincerely responsible for the “Product quality and “After service".
Introduction:
antioxidant vitamin c 50-81-7 is a white or slightly yellow crystals or powder,a little acid.m.p.190°c-192°c,easily soluble in water,a little soluble in alcohol and uneasily soluble in ether and chlorofom and other organic solvent.in solid state it is stable in air.its water solution is easliy mutated when it meets with air.
Coa of antioxidant vitamin c 50-81-7:
item |
standard |
appearance |
white or almost white crystal or crystalline powder |
identification |
positive |
melting point |
191 °c ~ 192°c |
ph (5%, w/v) |
2.2 ~ 2.5 |
ph (2%,w/v) |
2.4 ~ 2.8 |
specific optical rotation |
+20.5° ~ +21.5° |
clarity of solution |
clear |
heavy metals |
≤0.0003% |
assay (as c 6h 8o6, %) |
99.0 ~ 100.5 |
copper |
≤3 mg/kg |
iron |
≤2 mg/kg |
mercury |
≤1 mg/kg |
arsenic |
≤2 mg/kg |
lead |
≤2 mg/kg |
oxalic acid |
≤0.2% |
loss on drying |
≤0.1% |
sulphated ash |
≤ 0.1% |
residual solvents (as methanol) |
≤ 500 mg/kg |
total plate count (cfu/g) |
≤ 1000 |
yeasts & molds (cfu/g) |
≤ 100 |
escherichia. coli/g |
absence |
salmonella/ 25g |
absence |
staphylococcus aureus/ 25g |
absence |
application of bp/usp/fccvii ascorbic acid :
1.keep food, fruits and beverage fresh and prevent them from producing unpleasant smell.
2.prevent formation of nitrous amine from nitrous acid in meat products.
3.improve dough quality and make baked food expand to its maximum.
4.compensate the vitamin c losses of beverage ,fruits and vegetables during processing rocedures.
5.used as nutritional element in additives,feed additives.
Our Laboratory and Workshop:
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