Chlorothalonil

百菌清

Also known as: 1,3-Benzenedicarbonitrile, 2,4,5,6-tetrachloro-, 2,4,5,6-Tetrachloro-1,3-benzenedicarbonitrile, 2,4,5,6-Tetrachloroisophthalonitrile, 1,3-Dicyano-2,4,5,6-tetrachlorobenzene, Tetrachloroisophthalodinitrile, TPN, Bravo, Daconil, Nopcocide, BOMBARDIER, 2,4-Dicyanotetrachlorobenzene

Chlorothalonil (CAS 1897-45-6) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C8Cl4N2 and a molecular weight of 265.911 g/mol. It is also known as 1,3-Benzenedicarbonitrile, 2,4,5,6-tetrachloro-, 2,4,5,6-Tetrachloro-1,3-benzenedicarbonitrile and 2,4,5,6-Tetrachloroisophthalonitrile. Key properties include a melting point of 250-251ºC, a boiling point of 350.5±37.0 °C at 760 mmHg, a density of 1.7±0.1 g/cm3 and a flash point of 153.8±20.7 °C. It is classified under GHS with signal word Danger and hazard statements H317 — May cause an allergic skin reaction, H318 — Causes serious eye damage and H330 — Fatal if inhaled. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
1897-45-6
Jingsj CID
J-1104216-5
Molecular Formula
C8Cl4N2
Chinese Name
百菌清
Molecular Weight
265.911 g/mol
Category
Organic Compounds
Last updated
8/21/2026

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Physicochemical Properties

Melting Point250-251ºC
Boiling Point350.5±37.0 °C at 760 mmHg
Density1.7±0.1 g/cm3
Flash Point153.8±20.7 °C
Exact Mass263.881561
PSA47.58000
LogP2.88
Vapor Pressure0.0±0.8 mmHg at 25°C
Refractive Index1.633

GHS Safety & Compliance

Corrosion / Acute Toxicity / Health Hazard / Environmental HazardSignal word: Danger
  • H317 — May cause an allergic skin reaction
  • H318 — Causes serious eye damage
  • H330 — Fatal if inhaled
  • H335 — May cause respiratory irritation
  • H351 — Suspected of causing cancer
  • H410 — Very toxic to aquatic life with long lasting effects

Activity & Biological Data

Additional Information[1]. Pengfei Zhang, et al. Low Dose Chlorothalonil Impairs Mouse Spermatogenesis Through the Intertwining of Estrogen Receptor Pathways With Histone and DNA Methylation.Chemosphere. 2019 Sep;230:384-395. [2]. Małgorzata Baćmaga, et al. The Influence of Chlorothalonil on the Activity of Soil Microorganisms and Enzymes. Ecotoxicology. 2018 Nov;27(9):1188-1202.

Customs & Trade Information

HS Code2926909038
SummaryHS: 2926909038 fenoxanil Educational tariff:17.0% Tax rebate rate:9.0% Regulatory conditions:S(Registration certificate of import and export) Lowest tariff:6.5% General tariff:30.0%

Frequently Asked Questions

What is the CAS number of Chlorothalonil?

The CAS number of Chlorothalonil is 1897-45-6.

What are the molecular formula and molecular weight of Chlorothalonil?

Chlorothalonil has molecular formula C8Cl4N2 and molecular weight 265.911 g/mol.

Is Chlorothalonil hazardous?

Chlorothalonil has GHS signal word Danger and hazard statements H317 — May cause an allergic skin reaction; H318 — Causes serious eye damage; H330 — Fatal if inhaled.

What are the upstream and downstream products of Chlorothalonil?

For Chlorothalonil, Downstream Products: 1,2,3,4,6,7,8-heptachlorodibenzo-p-dioxin, 1,2,3,4,6,7,8,9-Octachlorodibenzo-p-dioxin, 4-Hydroxy-2,5,6-trichloroisophthalonitrile.

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

Last updated:

How to cite: Jingsj. "Chlorothalonil (CAS 1897-45-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1104216-5 (accessed 2026-10-28).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.