2,4-Dichloro-5-methylpyrimidine
Also known as: Pyrimidine, 2,4-dichloro-5-methyl-, 5-Methyl-2,4-dichloropyrimidine, NSC 37532, 2,4-Dichloro-5-methyl-1,3-diazine, 2,4-dichloro-5-methyl-pyrimidin, Dichloro-5-MethylpyriMid, PYRIMIDINE,2,4-DICHLORO-5-METHYL
2,4-Dichloro-5-methylpyrimidine (CAS 1780-31-0) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H4Cl2N2 and a molecular weight of 163.005 g/mol. Key properties include a melting point of 26-28 °C(lit.), a boiling point of 234.9±20.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 118.5±7.4 °C. It is classified under GHS with signal word Danger and hazard statements H314 — Causes severe skin burns and eye damage. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 1780-31-0
- Jingsj CID
- J-33249-0
- Molecular Formula
- C5H4Cl2N2
- Molecular Weight
- 163.005 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 26-28 °C(lit.) |
|---|---|
| Boiling Point | 234.9±20.0 °C at 760 mmHg |
| Density | 1.4±0.1 g/cm3 |
| Flash Point | 118.5±7.4 °C |
| Exact Mass | 161.975159 |
| PSA | 25.78000 |
| LogP | 1.62 |
| Vapor Pressure | 0.1±0.4 mmHg at 25°C |
| Refractive Index | 1.551 |
GHS Safety & Compliance
- H314 — Causes severe skin burns and eye damage
Customs & Trade Information
| HS Code | 2933599090 |
|---|---|
| Summary | 2933599090. other compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of 2,4-Dichloro-5-methylpyrimidine?
The CAS number of 2,4-Dichloro-5-methylpyrimidine is 1780-31-0.
What are the molecular formula and molecular weight of 2,4-Dichloro-5-methylpyrimidine?
2,4-Dichloro-5-methylpyrimidine has molecular formula C5H4Cl2N2 and molecular weight 163.005 g/mol.
Is 2,4-Dichloro-5-methylpyrimidine hazardous?
2,4-Dichloro-5-methylpyrimidine has GHS signal word Danger and hazard statements H314 — Causes severe skin burns and eye damage.
What are the upstream and downstream products of 2,4-Dichloro-5-methylpyrimidine?
For 2,4-Dichloro-5-methylpyrimidine, Upstream Products: Thymine; Downstream Products: 5-Methylpyrimidin-2-amine, 2,4-Dimethoxy-5-methylpyrimidine, 4-Chloro-5-methylpyrimidin-2-amine.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "2,4-Dichloro-5-methylpyrimidine (CAS 1780-31-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-33249-0 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.