malathion technical

Malathion is a nonsystemic, wide-spectrum organophosphate insecticide. It was one of the earliest organophosphate insecticides developed. Malathion is suited for the control of sucking and chewing insects on fruits and vegetables, and is also used to control mosquitoes, flies, household insects, animal parasites (ectoparasites), and head and body lice. Malathion may also be found in formulations with many other pesticides.

Physical and Chemical Properties

Common name Malathion Technical
Purity

95.00% Min

Malaoxon 0.10% Max
Isomalthion

0.40% Max

Acidity

0.20% Max as H2SO4

Chemical Family

Organophosphate

IUPAC Name diethyl(diethoxythiophosphorylthio)succinate
CAS No

[121-75-5]

Empirical Formula

C10H19O6PS2

Structural Formula
Molecular Weight 330.4
Appearance

Clear Amber liquid

Odour

Mercaptane Odor

Boiling Point

156-157°C

Specific Gravity

1. 32 at 25 oC

Vapour Pressure

5.3 mPa (30°C)

Solubility

In water 145 mg/lit at 25 oC.

Miscible with most organic solvents, eg. Alcohols, esters, ketones, ethers, aromatic hydrocarbos. Slightly soluble in petroleum ether and some types of mineral oil

Stability

Relatively stable in neutral, aqueous media. Decomposed by strong acids and by alkali; hydrolysis DT50 107 d(pH 5), 6 d(pH 7) 0.5 d(pH 9)

Flash Point 163°C
Toxicity
Route Species LD50 Mg/Kg of B/w
Oral Rat

1375-5000

Dermal Rabbit

>2000

Antidote

Atropine

Packing 200 Ltr UN approved Drums
Formulation Available

50%EC, 57% EC, 96% ULV, 25% WP and 50% WP

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