Introduction (Ascorbic acid CAS No. 50-81-7 )
Vitamin C, also known as Ascorbic acid, is a polyhydroxyl compound with the chemical formula C6H8O6. The structure is similar to glucose, and the two adjacent enol hydroxyl groups on the second and third positions of its molecules are easily dissociated and H+ is released, so it has the property of acid, also known as L-ascorbic acid.
Name: Vitamin C
Appearance: colorless crystal
Grade: Food Grade
Molecular Formula: C6H8O6
CAS No. 50-81-7
ENIECS NO. 200-066-2
Other name: Ascorbic Acid
Common Name | Ascorbic acid | ||
CAS Number | 50-81-7 | Molecular Weight | 176.124 |
Density | 2.0±0.1 g/cm3 | Boiling Point | 552.7±50.0 °C at 760 mmHg |
Molecular Formula | C6H8O6 | Melting Point | 190-194 °C (dec.) |



Products Parameters:
Analysis Items Specifications Analysis Results Analysis Method | ||||
1. | Characteristics | White or almost white crystalline powder or colorless crystals | White crystalline powder | EP |
2. | Identification | IR:Complies CA:Positive | Complies Positive | EP USP |
3. | Melting Point | About 190ºC | 190ºC | ChP |
4. | Specific Rotation | +20.5°~+21.5° | +21.0° | EP |
5. | Acidity(pH) | 2.1~2.6(5% aqueous solution) 2.4~2.8(2% aqueous solution) | 2.4 2.6 | EP In-house |
6. | Assay | 99.0%~100.5% | 99.7% | EP |
7. | Loss on Drying | ≤0.40% | 0.03% | In-house |
8. | Impurity E(Oxalic Acid) | ≤0.2% | <0.2% | EP |
9. | Related Substances | Impurity C:≤0.15% Impurity D:≤0.15% Unspecified Impurities:≤0.10% Total Impurities other than C,D: ≤0.2% | Not detected 0.02% <0.02% <0.02% | EP |
10. | Heavy Metals | ≤10ppm | <3ppm | In-house |
11. | Arsenic | ≤3ppm | <3ppm | In-house |
12. | Lead | ≤2ppm | <2ppm | In-house |
13. | Mercury | ≤1ppm | <1ppm | In-house |
14. | Copper | ≤5ppm | <5ppm | EP |
15. | Iron | ≤2ppm | <2ppm | EP |
16. | Sulphated Ash | ≤0.1% | 0.04% | EP |
17. | Clarity of Solution | Clear | Clear | EP |
18. | Colour of Solution | ≤BY | BY | EP |
19. | Residual Solvents | Methanol≤0.3% | 0.0104% | In-house |
20. | Particle-Size | ≤30% more than 40 mesh ≥45% between 40 and 80 mesh | 20% 68% | In-house |
The main source of vitamin C is fresh vegetables and fruits. Vegetables, pepper, chrysanthemum, bitter gourd, beans, spinach, potatoes, leeks and The main source of vitamin C is fresh vegetables and The main source of vitamin C is fresh vegetables and fruits. Vegetables,chrysanthemum, bitter gourd, beans, spinach, potatoes, leeks and other rich content; most fruit, wild jujube, jujube, citrus, strawberry, lemon and other content; in animal offal also contain small amounts of vitamin C.
Applications of Ascorbic Acid Vitamin C:
1. Ascorbic acid in food processing can prevent the generation of carcinogenic nitrite amine in pickled food, remove undesirable phenomena, and can also be used as an anti-corrosion preservative.
2. The addition of ascorbic acid in cosmetics can achieve the effect of moisturizing and nourishing the skin, improving the generation of wrinkles and keeping the skin firm


Packing and shipping:
Packing Details:
Packaging: Packages: 25kg/bag,It can also be packaged according to customer needs, and can be affixed with your LOGO and other information.
Shipment:we have established solid cooperation with DHL,TNT,Fedex,UPS,EMS and air freight as well as sea shipping companies for many years,and it is possiable that we use your own shipping agent too.




Company introduction:
Mingray Technology Group Co., Ltd. is a chemical operating enterprise which authorized and approved by MOFCOM which was established in 2009. Our company own variety of export products which are widely used in chemical, pharmaceuticals, textile printing & dyeing, leather processing, fertilizer, water treatment, construction industry, food &feed additives and other areas.Sodium sulfide, sodium carbonate, oxalic acid, citric acid, PAC are partial strong products. For every years, we stick to business philosophy of" integrity, deligence, fighting, innovation ", and have winning customers praise with our superior quality, favorable price and excellent service.We are located in Changsha city Hunan province which is aslo the hometown
of "MaoZeDong".We have large warehouses in Hubei, Jiangxi, and Hunan provinces in China with sufficient supply.
Sincerely hope to cooperate with more friends in the world and seek common developments.
Our factory:


Our team:




Our service:
- To supply high-quality products with reasonable prices in food additive industry.
- To follow orders and arrange shipping in time,providing complete documents for customs clearance according to different export policies in different countries.
- To take all the responsibility in case of product quality problems.
- To inform customers of price trends in the market timely.
- Perfect after-sale service,any inquiry will be replied within 24hours.
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- Sample is available for your evaluation and formulation development.
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FAQ:
1.What are your payment terms?For our first cooperate client,usually by TT 30% deposit,balance paid agansit BL copy,or full amount LC at sight.If you be our regular client, payment term can adjust.
2.What is your delivery time?
It depends on order quantity,usually we will arrange shipment within 3-20days.
3.How about packing?
Usually we provide packing as 25kg/bag or carton.Of course,if you have special requirment for packing,we will adjust according to you.
4.When can I get reply?
Our sales manager will contact you within 24hours.
5.How about the validity of products?
According to the products you order,usually 2 years.
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Usually we provide Commercial Invioce,Packing List, Bill of Loading,COA,Healthy Certificate and Original Certificate,etc.If there are any special requierments in your market,please let us know.
7.Can I get sample before order?
Yes,we can provide free sample once price is agreed,and you have to pay us delivery fee in advance.
8.Where is your loading port?
Usually QINGDAO port.
