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2-Amino-4,6-dichloropyrimidine

Also known as: 4,6-Dichloro-2-pyrimidinamine, 4,6-Dichloropyrimidin-2-amine, 4,6-Dichloro-2-aminopyrimidine, 2-Pyrimidinamine, 4,6-dichloro-, Pyrimidine, 2-amino-4,6-dichloro-, 2-Amino-4,6-dichloro-1,3-diazine

2-Amino-4,6-dichloropyrimidine (CAS 56-05-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C4H3Cl2N3 and a molecular weight of 163.993 g/mol. Key properties include a melting point of 219-222 °C(lit.), a boiling point of 348.5±45.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 164.6±28.7 °C. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
56-05-3
Jingsj CID
J-35832-7
Molecular Formula
C4H3Cl2N3
Molecular Weight
163.993 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point219-222 °C(lit.)
Boiling Point348.5±45.0 °C at 760 mmHg
Density1.6±0.1 g/cm3
Flash Point164.6±28.7 °C
Exact Mass162.970398
PSA51.80000
LogP1.40
Vapor Pressure0.0±0.8 mmHg at 25°C
Refractive Index1.633

GHS Safety & Compliance

IrritantSignal word: Warning
  • H315 — Causes skin irritation
  • H319 — Causes serious eye irritation
  • H335 — May cause respiratory irritation

Customs & Trade Information

HS Code2933599090
Summary2933599090. 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-Amino-4,6-dichloropyrimidine?

The CAS number of 2-Amino-4,6-dichloropyrimidine is 56-05-3.

What are the molecular formula and molecular weight of 2-Amino-4,6-dichloropyrimidine?

2-Amino-4,6-dichloropyrimidine has molecular formula C4H3Cl2N3 and molecular weight 163.993 g/mol.

Is 2-Amino-4,6-dichloropyrimidine hazardous?

2-Amino-4,6-dichloropyrimidine has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.

What are the upstream and downstream products of 2-Amino-4,6-dichloropyrimidine?

For 2-Amino-4,6-dichloropyrimidine, Upstream Products: 2-Amino-4,6-dihydroxypyrimidine, 2,4,6-Trichloropyrimidine, 2-Amino-6-chloro-4-pyrimidinol; Downstream Products: Fenclorim, 4-Chloro-6-(4-methylpiperazin-1-yl)pyrimidin-2-amine, 4-chloro-6-phenylpyrimidin-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-Amino-4,6-dichloropyrimidine (CAS 56-05-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-35832-7 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.