METALAXYL

GENERAL

METALAXYL is a systemic fungicide suitable for the control of diseases caused by air and soil borne Peronosporals on a wide range of temperature, subtropocal and tropical crops.  

STRUCTURE

CAS NO.

METALAXYL

57837-19-1

ACTIVITY

Fungicides
(Xylylalanine Fungicides)

MOL WT.

C15H21NO4
279.33
SYNONYMS
Methyl N-methoxyacetyl-N-2,6-xylyl-DL-alaninate.
N-(2,6-dimethylphenyl)-N-(methoxyacetyl)-DL-alaninate.

TOXICITY

Mammals

Acute oral LD50 for rats 576 mg/kg.
Acute percutaneous LD50 for rats >2000mg/kg.
Slight irritant to eye and skin. In 0.5 y feeding trials NOEL for dogs 250mg/kg diet.

Wildlife

Non-toxic to birds.

Fish

LC50 (96 h) for carp and rainbow trout > 100mg/��

Bee

Non-toxic to honeybees

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

Specific Gravity

1.21g/�� at 20��

Vapor Pressure

0.293 mPa at 20��

Melting Point

70.5~71.5��

Corrosiveness

Non corrosive to metals

Solubility(20��)

In water 7.1 g/�� at 20��
In benzene 550, dichloromethane 750, methanol 650, octanol 130, propanol 270 (all in g/�� at 20��)

Partition Coefficient

Kow logP = 1.65

Stability

Stable up to 300��.
Hydrolysis DT50 at 20��
in buffer solutions >200d (pH 1), 115 d(pH 9), 12 d(pH 10).

Purity

97% min

COMMENTS