1,3-Dimethylbarbituric acid
Also known as: 1,3-Dimethyl-2,4,6(1H,3H,5H)-pyrimidinetrione, 1,3-Dimethylpyrimidine-2,4,6(1H,3H,5H)-trione, 1,3-Dimethyl-1,3-diazinane-2,4,6-trione, 2,4,6(1H,3H,5H)-Pyrimidinetrione, 1,3-dimethyl-, N,N'-Dimethylbarbituric acid
1,3-Dimethylbarbituric acid (CAS 769-42-6) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C6H8N2O3 and a molecular weight of 156.139 g/mol. Key properties include a melting point of 121-123 °C(lit.), a boiling point of 228.1±23.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 95.3±15.0 °C. It is classified under GHS with signal word Danger and hazard statements H302 — Harmful if swallowed and H318 — Causes serious eye damage. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 769-42-6
- Jingsj CID
- J-8850-6
- Molecular Formula
- C6H8N2O3
- Molecular Weight
- 156.139 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 121-123 °C(lit.) |
|---|---|
| Boiling Point | 228.1±23.0 °C at 760 mmHg |
| Density | 1.3±0.1 g/cm3 |
| Flash Point | 95.3±15.0 °C |
| Exact Mass | 156.053497 |
| PSA | 57.69000 |
| LogP | -2.21 |
| Vapor Pressure | 0.1±0.5 mmHg at 25°C |
| Refractive Index | 1.511 |
GHS Safety & Compliance
- H302 — Harmful if swallowed
- H318 — Causes serious eye damage
Customs & Trade Information
| HS Code | 2933540000 |
|---|---|
| Summary | 2933540000 other derivatives of malonylurea (barbituric acid); salts thereof。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:6.5%。General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of 1,3-Dimethylbarbituric acid?
The CAS number of 1,3-Dimethylbarbituric acid is 769-42-6.
What are the molecular formula and molecular weight of 1,3-Dimethylbarbituric acid?
1,3-Dimethylbarbituric acid has molecular formula C6H8N2O3 and molecular weight 156.139 g/mol.
Is 1,3-Dimethylbarbituric acid hazardous?
1,3-Dimethylbarbituric acid has GHS signal word Danger and hazard statements H302 — Harmful if swallowed; H318 — Causes serious eye damage.
What are the upstream and downstream products of 1,3-Dimethylbarbituric acid?
For 1,3-Dimethylbarbituric acid, Upstream Products: 1,3-Dimethylurea, Malonic acid, 6-Methoxy-1,3-dimethyl-2,4(1H,3H)-pyrimidinedione; Downstream Products: N-[1,3-Dimethyl-6-(methylamino)-2,4-dioxo-1,2,3,4-tetrahydropyrimidin-5-yl]acetamide, Trimesic acid, 6-[N-(2-Hydroxyethyl)amino]-1,3-dimethyl-2,4(1H,3H)-dione.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "1,3-Dimethylbarbituric acid (CAS 769-42-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-8850-6 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.