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1,2-Diamino-3-chlorobenzene

Also known as: 3-Chloro-1,2-benzenediamine, 3-Chloro-1,2-diaminobenzene, 3-Chloro-o-phenylenediamine, 3-Chlorobenzene-1,2-diamine, 3-Chlorophenylene-1,2-diamine, 2,3-Diaminochlorobenzene, 2-Amino-3-chloroaniline, 6-Chloro-1,2-benzenediamine, 6-chloro-o-phenylenediamine, 1,2-Benzenediamine, 3-chloro-, 3-chloro-1,2-phenylenediamine, 3-chlorobenzene-1,2-diamine, diaminochlorobenzene

1,2-Diamino-3-chlorobenzene (CAS 21745-41-5) is a compound in the Organic Bases category listed in the Jingsj chemical database. It has the molecular formula C6H7ClN2 and a molecular weight of 142.586 g/mol. Key properties include a boiling point of 274.4±20.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 119.7±21.8 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
21745-41-5
Jingsj CID
J-1311749-2
Molecular Formula
C6H7ClN2
Molecular Weight
142.586 g/mol
Category
Organic Bases
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point274.4±20.0 °C at 760 mmHg
Density1.3±0.1 g/cm3
Flash Point119.7±21.8 °C
Exact Mass142.029770
PSA52.04000
LogP1.31
Vapor Pressure0.0±0.6 mmHg at 25°C
Refractive Index1.671
Storage Conditions2~8℃

Customs & Trade Information

HS Code2921590090
Summary2921590090. other aromatic polyamines and their derivatives; salts thereof. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 1,2-Diamino-3-chlorobenzene?

The CAS number of 1,2-Diamino-3-chlorobenzene is 21745-41-5.

What are the molecular formula and molecular weight of 1,2-Diamino-3-chlorobenzene?

1,2-Diamino-3-chlorobenzene has molecular formula C6H7ClN2 and molecular weight 142.586 g/mol.

What are the upstream and downstream products of 1,2-Diamino-3-chlorobenzene?

For 1,2-Diamino-3-chlorobenzene, Upstream Products: 2-Chloro-6-nitroaniline, 3-Chloro-2-nitroaniline, Nickel; Downstream Products: 4-Chloro-2-methyl-1H-benzo[d]imidazole, 5-Chloroquinoxaline, 7-Chloro-1H-benzo[d]imidazole.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "1,2-Diamino-3-chlorobenzene (CAS 21745-41-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1311749-2 (accessed 2026-11-09).

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