Molekula
Barbituric 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
Barbituric acid is an organic compound with a pyrimidine-2,4,6-trione structure, primarily used as a precursor in pharmaceutical synthesis, dye production, and analytical chemistry as a reagent, for example in the pyridine–barbituric acid method for cyanide and thiocyanate determination. It is also used in plastics manufacturing and is the parent compound from which barbiturate drug substances are synthesized. It appears as a white crystalline solid with a slightly bitter taste. Catalogue details include CAS 67-52-7, molecular formula C4H4N2O3, and a molecular weight of 128.09 g/mol. It is stable at ambient storage conditions, with a signal word of Warning for handling. Molekula supplies Barbituric 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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100 g — £45.00 per pack ex VAT · £54.00 inc. VAT
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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 | ≥ 250℃ |
| Loss on Drying | ≤ 0.5% |
| Assay | ≥ 99% |
| Sulphated Ash | ≤ 0.1% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Flash Point | 150 °C |
| Acidity | Acid |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Melting Point | 248 °C |
Source: PubChem CID 6211 (Human Metabolome Database (HMDB))
Identification
| Property | Value |
|---|---|
| SKU | 27436974 |
| CAS Number | 67-52-7 |
| IUPAC Name | 1,3-diazinane-2,4,6-trione |
| EC Number | 200-658-0 |
| Molecular Formula | C4H4N2O3 |
| Molecular Weight | 128.09 |
| Exact Mass | 128.0222 |
| SMILES | C1C(=O)NC(=O)NC1=O |
| InChIKey | HNYOPLTXPVRDBG-UHFFFAOYSA-N |
| InChI | InChI=1S/C4H4N2O3/c7-2-1-3(8)6-4(9)5-2/h1H2,(H2,5,6,7,8,9) |
| PubChem CID | 6211 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 29335210 |
| Tariff Code | 2933520010 |
Safety & GHS
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Health Hazard
GHS07
Hazard statements
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- 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
- P302+352 IF ON SKIN: Wash with soap and water
- P304+340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
- 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
- 1,3-diazinane-2,4,6-trione
- 2,4,6-Trioxohexahydropyrimidine
- 2,4,6(1H,3H,5H)-Pyrimidinetrione
- 4,6-dihydroxy-2,5-dihydropyrimidin-2-one
- 6-Hydroxyuracil
- Barbiturate
- Malonylurea
- pyrimidine-2,4,6(1H,3H,5H)-trione
- Pyrimidinetriol
- Pyrimidinetrione
Frequently asked questions
What is barbituric acid commonly used for?
Barbituric acid is primarily used as a precursor in the synthesis of pharmaceuticals, dyes, and agrochemicals, as well as in analytical chemistry for complex formation.
What is the chemical formula and molecular weight of barbituric acid?
The chemical formula is C₄H₄N₂O₃, and the molecular weight is 128.09 g/mol.
How should barbituric acid be stored?
Store barbituric acid at ambient temperature in a cool, dry place, away from incompatible substances and moisture.
What grades of barbituric acid does Molekula supply?
Molekula supplies pharmaceutical-grade and analytical-grade barbituric acid, depending on the application requirements.
Can Molekula supply barbituric acid in bulk quantities?
Yes, Molekula can supply barbituric acid in bulk, with quantities tailored to meet your production or research needs.
What documentation comes with an order of barbituric acid?
Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS), and batch-specific documentation for traceability.
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.