Agent Name

Pyrazon

Alternative Name

Chloridazon

CAS Number

1698-60-8

Formula

C10-H8-Cl-N3-O

Major Category

Pesticides

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; [HSDB] May cause skin sensitization; [eChemPortal: ESIS] May cause irritation; May cause skin sensitization; [MSDSonline]

Reference Link

EPA Pesticide Chemical Search

Exposure Assessment
Vapor Pressure

4.5E-7 mm Hg

Lethal Concentration

LC50 (rat) > 30,800 mg/m3/4h

Reference Link

EFSA: Chloridazon - 2007

Adverse Effects
Hepatotoxin

Hepatotoxin, Secondary

Links to Other NLM Databases
Health Studies

Human Health Effects from Hazardous Substances Data Bank:

Toxicity Information

Search TOXNET

Chemical Information

Search ChemIDplus

Biomedical References

Search PubMed

Related Information in HazMap
Processes

Industrial Processes with risk of exposure: