Molekula
L-Aspartic acid
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-Aspartic acid is a non-essential amino acid involved in metabolic processes and used in pharmaceuticals, food additives, and research. It has the CAS number 56-84-8, molecular formula HO2CCH2CH(NH2)CO2H, and a molecular weight of 133.10 g/mol. Store at 2 to 8 °C.
Molekula supplies L-Aspartic acid at 98.5 - 101.5% purity in 1 kg packs, from £54.12 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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1 kg — £45.10 per pack ex VAT · £54.12 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/ off white powder |
| Specific rotation | +24.5 to +26.0 |
| Loss on Drying | ≤ 0.25% |
| Specification | Conforms to USP |
| Chloride (Cl-) | ≤ 0.02% |
| Assay | 98.5 - 101.5% |
| Residue on Ignition | ≤ 0.1% |
| Heavy Metals (Pb) | ≤ 10ppm |
| Organic impurities | ≤ 0.5% |
| Iron (Fe) | ≤ 10ppm |
| Lead (Pb) | ≤ 0.0005% |
| Identification (IR) | Conforms to reference |
| Sulphates (SO4)(2-) | ≤ 0.03% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | 2 to 8 °C |
| Acidity | Acid |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | White, crystalline solid |
| Melting Point | 270 °C |
| Solubility (other solvents) | Insoluble in ethanol, ethyl ether, benzene; soluble in dilute HCl, pyridine |
| Vapour Pressure | 0.0000013 mmHg |
| pKa | pKa = 2.01 (at 0 °C) |
| log P (octanol/water) | -3.89 |
Source: PubChem CID 5960 (HSDB, DrugBank, Haz-Map)
Identification
| Property | Value |
|---|---|
| SKU | 13231280 |
| CAS Number | 56-84-8 |
| IUPAC Name | (2S)-2-aminobutanedioic acid |
| EC Number | 200-291-6 |
| Molecular Formula | HO2CCH2CH(NH2)CO2H |
| Molecular Weight | 133.10 |
| Exact Mass | 133.0375 |
| SMILES | C([C@@H](C(=O)O)N)C(=O)O |
| InChIKey | CKLJMWTZIZZHCS-REOHCLBHSA-N |
| InChI | InChI=1S/C4H7NO4/c5-2(4(8)9)1-3(6)7/h2H,1,5H2,(H,6,7)(H,8,9)/t2-/m0/s1 |
| PubChem CID | 5960 |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| HTS Code | 29224980 |
| Tariff Code | 2922498590 |
Safety & GHS
Precautionary statements
- P280 Wear protective gloves/protective clothing/eye protection/face protection
Documents
Safety Data Sheets (SDS)
Available in English, English (US), French, German, Italian, 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
- (2S)-2-aminobutanedioic acid
- (S)-2-Aminosuccinic acid
- (S)-Aspartic acid
- Asparagic acid
- Asparaginic acid
- aspartic acid
- Aspartic acid, L-
- L-Aminosuccinic acid
- L-Asparagic acid
- L-Asparaginic acid
Frequently asked questions
What is L-Aspartic acid used for?
L-Aspartic acid is used in biochemical research, as a building block in peptide synthesis, and in some food and pharmaceutical applications.
What is the chemical formula and molecular weight of L-Aspartic acid?
The formula is HO2CCH2CH(NH2)CO2H and the molecular weight is 133.10 g/mol.
How should L-Aspartic acid be stored?
Store at 2 to 8 °C to maintain stability and prevent degradation.
What grade of L-Aspartic acid does Molekula supply?
Molekula supplies L-Aspartic acid to a specification that conforms to USP, with an assay of 98.5 to 101.5%.
Can Molekula supply L-Aspartic acid in bulk?
Yes, Molekula can supply L-Aspartic acid in bulk quantities—please contact our sales team for pricing and availability.
What documentation comes with an order of L-Aspartic acid?
Each order includes a Certificate of Analysis (CoA) and safety data sheet (SDS) with the shipment.
Where can I buy L-Aspartic acid?
Directly from Molekula, which lists L-Aspartic acid in 1 kg packs from £54.12 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.