Molekula
Malonic 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
Malonic acid is a dicarboxylic acid (CAS 141-82-2) with the molecular formula CH₂(COOH)₂ and a molecular weight of 104.06 g/mol. It serves as a key intermediate in organic synthesis, pharmaceuticals, and agrochemical production, including the manufacture of barbiturates, herbicides, and other fine chemicals. Store at ambient conditions; the product carries a **Warning** signal word under GHS classification. Molekula supplies malonic 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
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 — £22.00 per pack ex VAT · £26.40 inc. VAT
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1 kg — £46.50 per pack ex VAT · £55.80 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 crystalline powder |
| Melting Point | 131.5-137.0°C |
| Heavy metals | ≤ 20ppm |
| Loss on Drying | ≤ 0.5% |
| Chloride (Cl-) | 0.02% max |
| Assay | 97 - 101.5% |
| Purity (GC) | ≥97% |
| Residue on Ignition | ≤ 0.1% |
| Appearance of Solution | Clear to slightly hazy, Colourless to faint yellow and complete |
| Identification (IR) | Conforms to reference |
| Sulphates (SO4)(2-) | 0.1% max |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Flash Point | 172 °C |
| Acidity | Acid |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | White crystals |
| Melting Point | 135 °C |
| Boiling Point | 140 °C at 760 mmHg (decomposes) |
| Density | 1.619 g/cm³ at 10 °C |
| Water Solubility | 623 g/L at 25 °C |
| Vapour Pressure | 2.7 × 10⁻⁶ mmHg at 23 °C |
| pKa | pKa = 2.85 (at 25 °C) |
| log P (octanol/water) | -0.81 |
Source: PubChem CID 867 (HSDB, Human Metabolome Database (HMDB), CAMEO Chemicals, DrugBank)
Identification
| Property | Value |
|---|---|
| SKU | 13843683 |
| CAS Number | 141-82-2 |
| IUPAC Name | propanedioic acid |
| EC Number | 205-503-0 |
| Molecular Formula | CH2(COOH)2 |
| Molecular Weight | 104.06 |
| Exact Mass | 104.011 |
| SMILES | C(C(=O)O)C(=O)O |
| InChIKey | OFOBLEOULBTSOW-UHFFFAOYSA-N |
| InChI | InChI=1S/C3H4O4/c4-2(5)1-3(6)7/h1H2,(H,4,5)(H,6,7) |
| PubChem CID | 867 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2917.19.70.50 |
| Tariff Code | 2917191090 |
Safety & GHS
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Corrosive
GHS05
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Health Hazard
GHS07
Hazard statements
- H303 May be harmful if swallowed
- H315 Causes skin irritation
- H318 Causes serious eye damage
- H335 May cause respiratory irritation
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+312 IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell
- P302+352 IF ON SKIN: Wash with soap and water
- 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 Czech, English, Finnish, French, German, Italian, Portuguese, 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
- 1,3-Propanedioic acid
- Carboxyacetic acid
- Dicarboxymethane
- disodium;malonate
- Kyselina malonova
- malonate
- malonyl
- Methanedicarboxylic acid
- propanedioic acid
- USAF EK-695
Frequently asked questions
What is malonic acid commonly used for?
Malonic acid is primarily used as a precursor in organic synthesis, including the production of barbiturates, cyanine dyes, and other pharmaceuticals, as well as in agricultural chemicals and as a pH regulator.
What is the chemical formula and molecular weight of malonic acid?
The chemical formula is **CH₂(COOH)₂**, and the molecular weight is **104.06 g/mol**.
How should malonic acid be stored?
Store malonic acid at **ambient temperature** in a cool, dry place, away from incompatible substances like strong oxidizers or bases.
What grades of malonic acid does Molekula supply?
Molekula supplies malonic acid in **technical and reagent grades**, suitable for industrial and laboratory applications.
Can Molekula supply malonic acid in bulk quantities?
Yes, Molekula can supply malonic acid in **bulk quantities** depending on availability and customer requirements.
What documentation comes with a malonic acid order?
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.