4-Nitro-2,1,3-benzoselenadiazole

Also known as: 4-Nitrobenzo[c][1,2,5]selenadiazole, 4-Nitro-2,1,3-benzoselenadiazole, 2,1,3-Benzoselenadiazole, 4-nitro-, 4-NITRO-BENZO(1,2,5)SELENADIAZOLE

4-Nitro-2,1,3-benzoselenadiazole (CAS 20718-41-6) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C6H3N3O2Se and a molecular weight of 228.06700 g/mol. Key properties include a melting point of 221ºC (dec.)(lit.), a boiling point of 356.3ºC at 760 mmHg and a flash point of 169.3ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 20718-41-6
Jingsj CID: J-1143536-2
Molecular Formula: C₆H₃N₃O₂Se
Molecular Weight: 228.06700 g/mol
Category: Aromatic Hydrocarbons
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	221ºC (dec.)(lit.)
Boiling Point	356.3ºC at 760 mmHg
Flash Point	169.3ºC
Exact Mass	228.93900
PSA	71.60000
LogP	1.11820
Vapor Pressure	6.07E-05mmHg at 25°C

Customs & Trade Information

HS Code	2904209090
Summary	2904209090 derivatives containing only nitro or only nitroso groups。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:5.5%。General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 4-Nitro-2,1,3-benzoselenadiazole?

The CAS number of 4-Nitro-2,1,3-benzoselenadiazole is 20718-41-6.

What are the molecular formula and molecular weight of 4-Nitro-2,1,3-benzoselenadiazole?

4-Nitro-2,1,3-benzoselenadiazole has molecular formula C6H3N3O2Se and molecular weight 228.06700 g/mol.

What are the upstream and downstream products of 4-Nitro-2,1,3-benzoselenadiazole?

For 4-Nitro-2,1,3-benzoselenadiazole, Upstream Products: 2,1,3-Benzoselenadiazole, o-Phenylenediamine, 1,2-Diamino-3-nitrobenzene.

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

Last updated: 8/21/2026

How to cite: Jingsj. "4-Nitro-2,1,3-benzoselenadiazole (CAS 20718-41-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1143536-2 (accessed 2026-11-09).

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