DEMETON Chemical Properties

Boiling point:

bp2 134°

Density 

1.1183 g/cm3 (20℃)

refractive index 

1.4875 (589.3 nm 20℃)

solubility 

Chloroform (Sparingly), Ethyl Acetate (Slightly), Methanol (Slightly)

form 

Pale yellow to light brown, oily liquid

Exposure limits

TLV-TWA: 0.1 mg/m³ (skin) (ACGIH)
PEL-TWA: 0.1 mg/m³ (skin) (OSHA)
IDLH: 20 mg/m³ (WHO).

EPA Substance Registry System

Demeton (8065-48-3)

Safety Information

Hazard Codes 

T+,N

Risk Statements 

27/28-50

Safety Statements 

28-36/37-45-61

RIDADR 

3018

OEB

D

OEL

TWA: 0.1 mg/m3 [skin]

RTECS 

TF3150000

HazardClass 

6.1(a)

PackingGroup 

I

HS Code 

29309090

Hazardous Substances Data

8065-48-3(Hazardous Substances Data)

Toxicity

LD50 in female, male rats (mg/kg): 2.5, 6.2 orally; 8.2, 14 dermally (Gaines)

IDLA

10 mg/m3

DEMETON Usage And Synthesis

Chemical Properties

Demeton is a light brown liquid with an odor of sulfur compounds; freezing/melting point ≤‐13 C

Uses

Acaricide; insecticide

Uses

Insecticide.

General Description

Oily liquid with an amber color and an odor of sulfur. Used as an agricultural insecticide.

Reactivity Profile

DEMETON may release sulfur oxides and phosphoric acid. Solvent carrier vapors may travel on ground to ignition source. Avoid strong oxidizers. Avoid mixtures with water or polar solvents, in which sulfur is lost to oxygen, air and light, which cause hydrolysis, alkaline mixtures and oxidizing agents. [EPA, 1998].

Health Hazard

DEMETON is a cholinesterase inhibitor. It is readily absorbed through the skinand is extremely toxic. Probable human lethal oral dose is 5-50 mg/kg or 7 drops to 1 teaspoonful for 150 lb. person. Acute dose is believed to be 12 to 20 mg by oral route.

Health Hazard

One of the extremely toxic organophosphorus pesticides; cholinesterase inhibitor;exhibits acute, delayed, and chronic effects;toxic symptoms include headache, dizziness, muscle spasms, pinpoint pupils, blurredvision, weakness, abdominal pain, vomiting,nausea, diarrhea, and seizure; high exposuremay cause coma and death; other symptomsare chest pain, low or high blood pressure,shortness of breath, psychosis, respiratorydepression, and respiratory paralysis; readily absorbed through skin; effects may bedelayed by several hours; ingestion can causeimmediate seizure or loss of consciousness;probable oral lethal dose within the range0.4–2 g for adult humans.
LD50 oral (rat): 1.7 mg/kg
LD50 skin (rat): 8–14 mg/kg.

Fire Hazard

May release sulfur oxides and phosphoric acid. Solvent carrier vapors may travel on ground to ignition source. Avoid strong oxidizers. Avoid mixtures with water or polar solvents, in which sulfur is lost to oxygen, air and light, which cause hydrolysis, alkaline mixtures and oxidizing agents.

Potential Exposure

A potential danger to those involved in the manufacture, formulation, and application of this systemic insecticide and acaricide.

Shipping

UN3278 Organophosphorus compound, liquid, toxic, n.o.s., Hazard Class: 6.1; Labels: 6.1-Poisonous materials, Hazard Technical Name Required, Potential Inhalation Hazard (Special Provision 5). UN3017 Organophosphorus pesticides, liquid, toxic, flammable, flash point not , 23 C, Hazard class: 6.1; Labels: 6.1- Poisonous materials, 3-Flammable liquid. UN2810 Toxic liquids, organic, n.o.s., Hazard Class: 6.1; Labels: 6.1- Poisonous materials, Technical Name Required.

Incompatibilities

May form explosive mixture with air. Strong oxidizers, strong bases, soluble mercury, other pesticides, and water.

Waste Disposal

The thiono-and thiolo-isomers of this mixture are 50% hydrolyzed in 75 minutes and 0.85 min- ute, respectively @ 20℃ and pH 13. At pH 9 and 70 ℃ , the half-life of Demeton is 1.25 hour, but an pH 1-5 it is over 11 hours. Sand and rushed limestone may be added together with a flammable solvent; the resultant mixture may be burned in a furnace with afterburner and alkaline scrubber .In accordance with 40CFR165, follow recommendations for the disposal of pesticides and pesticide containers. Must be dis- posed properly by following package label directions or by contacting your local or federal environmental control agency, or by contacting your regional EPA office.

DEMETON(8065-48-3)Related Product Information

• DEMETON-S-METHYL SULFONE,DEMETON-S-METHYL-SULFON,DEMETON-S-METHYL SULFOXIDE,DEMETON-S-METHYL SULPHONE,demeton-s-methylsulpho
• DEMETON S, 100MG, NEAT,demeton s (bsi,iso),DEMETON S
• O,O,O-TRIETHYLPHOSPHOROTHIOATE
• DEMEPHION
• DEMETON-S-METHYL
• DEMETON
• demeton-O-methyl,demeton-O-methyl (ISO) O-2-ethylthioethyl O,O-dimethyl phosphorothioate,Demeton methyl
• Demeton methyl powder(content>10%)
• Oxydemeton-methyl
• O,O,S-triethyl phosphorothioate
• Demeton thiono,Demeton-O, Pestanal
• demeton-s sulfoxide
• DEMETON O
• Methyl demeton methyl: (Phosphorothioic acid, O,O-dimethyl-S-(2-methylthio)ethyl ester)
• demeton-s-sulfone
• Demeton-S-methyl (See Demeton-S-methyl sulphone)
• DEMETON S SOLUTION 100UG/ML IN TOLUENE 5X1ML
• DEMETON S SOLUTION 100UG/ML IN TOLUENE 5ML