DEMETON O Chemical Properties

Boiling point:

272.05°C (estimate)

Density 

1.1190

Flash point:

45 °C

storage temp. 

−20°C

solubility 

Chloroform (Slightly), Ethyl Acetate (Slightly)

form 

Oil

color 

Colourless

Water Solubility 

2g/L(room temperature)

CAS DataBase Reference

298-03-3

EPA Substance Registry System

Demeton-O (298-03-3)

Safety Information

Hazard Codes 

T+,N

Risk Statements 

27/28-50

Safety Statements 

28-36/37-45-61

RIDADR 

3018

RTECS 

TF3125000

HazardClass 

6.1(a)

PackingGroup 

I

DEMETON O Usage And Synthesis

Description

Demeton is a light brown liquid with an odorof sulfur compounds; Freezing/Melting point #213℃.Molecular weight = 516.92; Boiling point =134℃ at2 mmHg at 20℃; Flash point =45℃; Explosive limits:LEL = 1%; UEL = 5.3%. Hazard Identification (based onNFPA-704 M Rating System): Health 3, Flammability 2,Reactivity 0. Insoluble in water.

Chemical Properties

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

Uses

Demeton-O is an organophosphorus pesticide found in some imported crops and fruits samples.

Definition

ChEBI: Demeton-O is an organic thiophosphate.

Potential Exposure

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

First aid

If this chemical gets into the eyes, remove anycontact lenses at once and irrigate immediately for at least15 min, occasionally lifting upper and lower lids. Seek medical attention immediately. If this chemical contacts theskin, remove contaminated clothing and wash immediatelywith soap and water. Speed in removing material from skinis of extreme importance. Shampoo hair promptly if contaminated. Seek medical attention immediately. If thischemical has been inhaled, remove from exposure, beginrescue breathing (using universal precautions, includingresuscitation mask) if breathing has stopped and CPR ifheart action has stopped. Transfer promptly to a medicalfacility. When this chemical has been swallowed, get medical attention. Give large quantities of water and inducevomiting. Do not make an unconscious person vomit.Effects may be delayed; medical observation isrecommended

storage

Color Code—Blue: Health Hazard/Poison: Storein a secure poison location. Prior to working with demetonyou should be trained on its proper handling and storage. Aregulated, marked area should be established where thischemical is handled, used, or stored in compliance withOSHA Standard 1910.1045. Before entering confined spacewhere this chemical may be present, check to make surethat an explosive concentration does not exist. Store inDemeton 861tightly closed containers in a cool, well-ventilated areaaway from oxidizers, strong bases, water, soluble mercury,and other pesticides. Where possible, automatically pumpliquid from drums or other storage containers to processcontainers.

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 O(298-03-3)Related Product Information

• DEMETON O
• DEMETON
• O,O,O-TRIETHYLPHOSPHOROTHIOATE