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Introduction:
An antimycotic used in seed testing, specifically for the selection of Fusarium circinatum.
P6737 Pentachloronitrobenzene
| Synonyms: | PCNB, Quintozene |
| CAS: | 82-68-8 |
| Formula: | C6Cl5NO2 |
| Mol. Weight: | 295.33 g/mol |
Properties
| Form: | Powder |
| Appearance: | Off-White to Tan |
| Application: | Seed Testing, Antimycotic |
| Solubility: | DMSO, Chloroform, Slightly Soluble in Alcohols |
| Storage Temp: | Room Temperature |
| Typical Working Concentration: | Varies with application, should be determined by end user. |
Application Notes
Pentachloronitrobenzene (PCNB) is known as a broad spectrum contact antimycotic. According to the Fungicide Resistance Action Committee (FRAC), PCNB is listed as a lipid and membrane synthesis inhibitor (Fishel 2006).
PCNB has been documented to have activity against soil-borne bacteria, such as Rhizoctonia solani, Sclerotium rolfsii and Streptomyces scabies. It will also suppress the growth of actinomycetes and Rhizopus (Katan & Lockwood 1970).
PCNB can be used as a seed treatment, and is noted for this use by the International Seed Testing Association (ISTA) in method 7-009: Detection of Fusarium circinatum on Pinus spp. (ISTA 2011).
References
STA (2011) Annexe to Chapter 7: Seed Health Methods.
Katan J & JL Lockwood (1970) Effect of Pentachloronitrobenzene on Colonization of Alfalfa Residues by Fungi and Streptomycetes in Soil. Phytopathology 60:1578-1582.
Fishel FM (2006) Fungicide Resistance Action Committee's (FRAC) Classification Scheme of Fungicides According to Mode of Action. PI-94 Fungicide Resistance Action Committee.