Demeton-S-methyl , Analysis standard , 919-86-8

Synonym(s):
S-[2-(Ethylthio)ethyl] O,O-dimethyl phosphorothioate;Methyldemetone;S-(2-Ethylthioethyl) O,O-dimethyl phosphorothioate

CAS NO.：919-86-8

Empirical Formula: C6H15O3PS2

Molecular Weight: 230.29

MDL number: MFCD00055464

EINECS: 213-052-6

PRODUCT Properties

• Melting point: <25℃
• Boiling point: 118℃
• Density: 1.207 g/cm3
• vapor pressure: 4 x 10^-2 Pa (20 °C)
• refractive index: 1.511 (589.3 nm 20℃)
• Flash point: 2 °C
• storage temp.: -18°C
• Water Solubility: 22,000 mg^-1 (20 °C)
• Merck: 13,6077
• EPA Substance Registry System: Demeton-S-methyl (919-86-8)

Description and Uses

Demeton-S-methyl is pale yellow in colour and oily and has a sulphur-like odour. It is sparingly soluble in water but very rapidly soluble in common polar organic solvents such as dichloromethane, 2-propanol, toluene, and n-hexane. It is a highly toxic, systemic, and contact insecticide and acaricide and classified as Category I. It is used for the control of insects, aphids, sawflies, and spider mites on cereals, fruits, vegetables, and ornamental plants. On heating, demeton-S-methyl undergoes decomposition and emits very toxic fumes, phosphorus oxides, and sulphur oxides.

Demeton-S-methyl is a systemic insecticide used to control sucking insects and mites in a wide range of crops and ornamentals.

Safety

• Symbol(GHS): GHS02,GHS07,GHS06,GHS09
• Signal word: Danger
• Hazard statements: H225-H302+H312+H332-H319-H301+H311-H411
• Precautionary statements: P210-P280-P305+P351+P338-P273-P301+P310+P330-P302+P352+P312-P391-P501
• Hazard Codes: T,N,Xn,F
• Risk Statements: 24/25-51/53-36-20/21/22-11
• Safety Statements: 28-36/37-45-61-26-16
• RIDADR: 3018
• WGK Germany: 2
• RTECS: TG1750000
• HazardClass: 6.1(a)
• PackingGroup: II
• HS Code: 29309090
• Hazardous Substances Data: 919-86-8(Hazardous Substances Data)
• Toxicity: LD50 in rats (mg/kg): 40 orally, 85 dermally (Edson)