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 2000 · 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 from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Often bought together
Pricing & pack sizes
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.
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 pharmaceutical grade L-Ascorbic acid suitable for use in supplements and formulations.
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.
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.