Pyrazon

Agent Name
Pyrazon
Alternative Name
Chloridazon
CAS Number
1698-60-8
Formula
C10-H8-Cl-N3-O
Major Category
Pesticides
Pyrazon formula graphical representation
Synonyms
Chloridazon; 1-Fenyl-4-amino-5-chlor-6-pyridazinon [Czech]; 1-Phenyl-4-amino-5-chloropyridaz-6-one; 1-Phenyl-4-amino-5-chloropyridazin-6-one; 1-Phenyl-4-amino-5-chlorpyridaz-6-one; 1-Phenyl-4-amino-5-chlorpyridazon-(6) [German]; 3(2H)-Pyridazinone, 5-amino-4-chloro-2-phenyl-; 5-Amino-4-chloro-2,3-dihydro-3-oxo-2-phenylpyridazine; 5-Amino-4-chloro-2-phenyl-3-pyridazinone; 5-Amino-4-chloro-2-phenylpyridazin-3(2H)-one; 5-Amino-4-chloro-2-phenylpyridazinone; BAS 1191611; BAS 13033; Burex [Czech]; Chloridazone [ISO-French]; Clorizol; Curbetan; HS 119-1; PCA; PCA (pesticide); Phenazon; Phenazon (herbicide); Phenazone; Phenazone (herbicide); Phenosane; Pyramin (herbicide); Pyramin RB; Pyramin(e); Pyramine; Pyrazon [ANSI]; Pyrazone; Pyrazonl; Suzon; 5-Amino-4-chloro-2-phenyl-3(2H)-pyridazinone; [ChemIDplus]
Category
Herbicides, Other
Description
Colorless odorless solid; [HSDB]
Sources/Uses
Used as herbicide to control weeds in beets and ornamentals; [HSDB]
Comments
Repeated exposure may cause skin rashes; Case reports of slight liver enlargement; [HSDB] May cause skin sensitization; [eChemPortal: ESIS] May cause irritation; May cause skin sensitization; [MSDSonline]
Reference Link #1
Biomedical References

Exposure Assessment

Vapor Pressure
4.5E-07 mm Hg
Lethal Concentration
LC50 (rat) > 30,800 mg/m3/4h

Adverse Effects

Hepatotoxin
Hepatoxic (a) from occupational exposure (secondary effect) or (b) in animal studies or in humans after ingestion

Diseases, Processes, and Activities Linked to This Agent

Processes

Industrial Processes with risk of exposure: