PENCYCURON

GENERAL
PENCYCURON is a non-systemic fungicide with a specific action against diseases caused by Rhizoctonia solani and Pellicularia spp. in potatoes, rice, sugar beets, cotton and ornamentals

STRUCTURE

CAS NO.

PENCYCURON

66063-05-6

ACTIVITY

Fungicides
(Phenylurea Fungicides)

MOL WT.

C19H21ClN2O
328.84
SYNONYMS
1-(4-chlorobenzyl)-1-cyclopentyl-3-phenylurea
N-[(4-chlorophenyl)methyl]-N-cyclopentyl-Nกว-phenylurea

TOXICITY

Mammals

Acute oral LD50 for rats , mice 5,000mg/kg.
Acute dermal LD50for rats and mice >2,000mg/kg.
Acute inhalation LC50 (4 h) for rats > 0.27 mg/งค air (aerosol).
Non-irritating to skin and eyes.
NOEL (2 y) for male rats 50, female rats 500, dogs 100mg/kg diet

Bird

Acute oral LD50 for bobwhite quail > 2,000mg/kg

Fish

LC50 (96 h) for carp 8.8, rainbow trout >690mg/งค

Bee

Not dangerous to bees

PRECAUTION IN HANDLING

It should be under no circumstances whatsoever be handled by children or incompetent persons. While in storage, drum should be kept well sealed and stored in cool, dry and well ventilated place. In case of accidental ingestion, the patient should be taken to a doctor who should give symptomatic treatment.

SPECIFICATION

Appearance

White crystalline solid

Vapor Pressure

0.5 nPa at 20กษ

Melting Point

129.5กษ

Corrosiveness

Non corrosive to metals

Solubility(20กษ)

In water 0.3 mg/l (20กษ) In dichloromethane 200~500, toluene 20~50, isopropanol 2~5, hexane <1 (all in g/l at 20กษ)

Partition Coefficient

Kow logP=4.68

Stability

Stable in natural conditions.
On hydrolysis (25กษ) DT50 280(Ph 4), 22 y(pH 7), 17 y(pH9).
Photodegrades in water and on soil surface.

Purity

93% min

COMMENTS