Molekula
L-Ascorbic acid (Vitamin C)
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
L-Ascorbic acid, also known as Vitamin C, is a water-soluble vitamin essential for collagen synthesis, antioxidant defense, and immune support. It is widely used in nutritional supplements, cosmetics, and food preservation. Available with CAS number 50-81-7, molecular formula C6H8O6, and molecular weight 176.12 g/mol, it is stable at ambient storage conditions.
Molekula supplies L-Ascorbic acid (Vitamin C) at 99% - 100.5% purity in 100 g and 1 kg packs, from £24.24 inc. VAT. It is in stock for same-day dispatch. Every batch ships with a certificate of analysis, and safety data sheets are available in 6 languages. Larger quantities, up to multi-tonne, are quoted on request.
Example image for illustration only. Other packaging and pack sizes are available.
Often bought together
Pricing & pack sizes
In stock — same-day dispatch
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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100 g — £20.20 per pack ex VAT · £24.24 inc. VAT
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1 kg — £46.10 per pack ex VAT · £55.32 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | White or almost white, crystalline powder |
| Density | BP2010 conforms |
| Assay/Purity | 99% - 100.5% |
| Identification | Conforms |
| pH | 2.1 - 2.6 |
| Loss on Drying | <0.5% |
| Sulphated Ash | ≤0.1 % |
| Colour of Solution | ≤ BY7 |
| Specific optical rotation | 20.5 - 21.5° |
| Organic Volatile Impurities | Conforms |
| Mesh | <100 |
| Residual Solvents | Conforms |
| Heavy Metals (Pb) | 10ppm max |
| Clarity in Solution | Clear |
| Cadmium (Cd) | ≤1ppm |
| Iron (Fe) | ≤2ppm |
| Lead (Pb) | ≤ 2ppm |
| Mercury (Hg) | ≤0.1ppm |
| Arsenic (As) | ≤ 3ppm |
| Copper (Cu) | ≤5.0ppm |
| Oxalate (Oxalic acid) | ≤0.3% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Acid |
For research use only. Not for human use.
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | White crystals (plates or needles) |
| Odour | Odorless |
| Melting Point | 190-192 °C (some decomposition) |
| Density | 1.65 g/cm³ at 25 °C |
| pKa | pKa = 4.7 (at 10 °C) |
| log P (octanol/water) | -1.85 |
Source: PubChem CID 54670067 (HSDB, DrugBank)
Identification
| Property | Value |
|---|---|
| SKU | 35196085 |
| CAS Number | 50-81-7 |
| IUPAC Name | (2R)-2-[(1S)-1,2-dihydroxyethyl]-3,4-dihydroxy-2H-furan-5-one |
| EC Number | 200-066-2 |
| Molecular Formula | C6H8O6 |
| Molecular Weight | 176.12 |
| Exact Mass | 176.0321 |
| SMILES | C([C@@H]([C@@H]1C(=C(C(=O)O1)O)O)O)O |
| InChIKey | CIWBSHSKHKDKBQ-JLAZNSOCSA-N |
| InChI | InChI=1S/C6H8O6/c7-1-2(8)5-3(9)4(10)6(11)12-5/h2,5,7-10H,1H2/t2-,5+/m0/s1 |
| PubChem CID | 54670067 |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| HTS Code | 29362700 |
| Tariff Code | 2936270000 |
Safety & GHS
Precautionary statements
- P264 Wash thoroughly after handling
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P308+313 IF exposed or concerned: Get medical advice/attention
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Russian, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Quality certificates
Molekula Group is certified to ISO 9001:2015 (quality) and ISO 14001:2015 (environmental management), audited by a UKAS-accredited body. Both certificates are valid to 17 May 2028.
Synonyms
- Allercorb
- Ascoltin
- Ascorbajen
- ascorbic acid
- Ascorbicap
- Ascorin
- Ascorteal
- Cevitamic acid
- l-ascorbic acid
- vitamin C
Frequently asked questions
What is L-Ascorbic acid used for?
L-Ascorbic acid is commonly used as an antioxidant in pharmaceuticals, cosmetics, and food supplements to support collagen synthesis and immune function.
What is the chemical formula and molecular weight of L-Ascorbic acid?
The chemical formula is C6H8O6 and the molecular weight is 176.12 g/mol.
How should L-Ascorbic acid be stored?
It should be stored at ambient temperature, protected from moisture and light to maintain stability.
What grade of L-Ascorbic acid is available?
We offer L-Ascorbic acid as a white or almost white crystalline powder with an assay of 99% to 100.5%, supplied to a defined specification that includes limits for heavy metals, oxalate, loss on drying and sulphated ash.
Can Molekula supply L-Ascorbic acid in bulk?
Yes, we can supply L-Ascorbic acid in bulk quantities; please contact our sales team for pricing and availability.
What documentation comes with an order of L-Ascorbic acid?
Each order includes a Certificate of Analysis (CoA) and safety data sheet (SDS) with the shipment.
Where can I buy L-Ascorbic acid (Vitamin C)?
Directly from Molekula, which lists L-Ascorbic acid (Vitamin C) in 100 g and 1 kg packs from £24.24 inc. VAT, with a certificate of analysis for every batch. Larger quantities are quoted on request. Molekula's offices: United Kingdom, France, Spain, Germany, Italy, United States and China.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.