Molekula
Oxalacetic acid
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
Oxalacetic acid is an alpha-keto acid and key intermediate in metabolic pathways, including the citric acid cycle and gluconeogenesis. It is primarily used in biochemical research, enzyme assays, and as a precursor in organic synthesis. This white crystalline powder has a CAS number of 328-42-7, with a molecular formula of C4H4O5 and a molecular weight of 132.07. It must be stored between 2 to 8°C and carries a **Danger** signal word due to its hazardous properties. Molekula supplies Oxalacetic 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.
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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25 g — $199.20 per pack
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 to off-white powder |
| Melting Point | 164.0 - 168.0°C |
| Solubility | Clear to slightly hazy, colourless to light yellow solution (100mg/ml aq.) |
| Assay (Titration) | 97.5 - 102.5% |
| Identification (IR) | Conforms to structure |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | 2 to 8 °C |
| Transport Class | 8 |
| Packing Group | II |
| Acidity | Acid |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Melting Point | 161 °C |
Source: PubChem CID 970 (Human Metabolome Database (HMDB))
Identification
| Property | Value |
|---|---|
| SKU | 21309006 |
| CAS Number | 328-42-7 |
| IUPAC Name | 2-oxobutanedioic acid |
| EC Number | 206-329-8 |
| Molecular Formula | C4H4O5 |
| Molecular Weight | 132.07 |
| Exact Mass | 132.0059 |
| SMILES | C(C(=O)C(=O)O)C(=O)O |
| InChIKey | KHPXUQMNIQBQEV-UHFFFAOYSA-N |
| InChI | InChI=1S/C4H4O5/c5-2(4(8)9)1-3(6)7/h1H2,(H,6,7)(H,8,9) |
| PubChem CID | 970 |
| UN Number | UN3261 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 29183090 |
| Tariff Code | 2918300090 |
Safety & GHS
-
Corrosive
GHS05
Hazard statements
- H314 Causes severe skin burns and eye damage
- H318 Causes serious eye damage
Precautionary statements
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P303+361 IF ON SKIN (or hair): Remove immediately all contaminated clothing. Rinse with water/shower
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Safety Data Sheets (SDS)
Available in English, 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.
Synonyms
- 2-Ketosuccinic acid
- 2-Oxobutanedioic acid
- Acid, Oxalacetic
- Bioepg
- Butanedioic acid, oxo-
- keto-oxaloacetate
- Ketosuccinic acid
- oxaloacetate
- oxaloacetic acid
- Oxosuccinic acid
Frequently asked questions
What is oxalacetic acid commonly used for in research or industrial applications?
Oxalacetic acid is primarily used as a key intermediate in biochemical research, metabolic pathway studies, and as a precursor in the synthesis of pharmaceuticals and amino acids like aspartic acid.
What is the chemical formula and molecular weight of oxalacetic acid?
The chemical formula is **C₄H₄O₅** and the molecular weight is **132.07 g/mol**.
How should oxalacetic acid be stored to maintain stability?
Store oxalacetic acid at **2–8°C** in a cool, dry place, protected from light and moisture.
What purity grades or forms (e.g., powder, solution) does Molekula supply for oxalacetic acid?
Molekula supplies oxalacetic acid in **high-purity powder form (typically ≥98% purity)**.
Can Molekula supply oxalacetic acid in bulk quantities for large-scale applications?
Yes, Molekula can provide oxalacetic acid in bulk, with quantities and packaging tailored to your requirements—please contact us for pricing and availability.
What documentation is provided with an order of oxalacetic acid?
Each order includes a **Certificate of Analysis (CoA)**, Material Safety Data Sheet (MSDS), and a product specification sheet.
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.