Agent Name

Demeton

Alternative Name

Systox

CAS Number

8065-48-3

Formula

C8-H19-O3-P-S2.C8-H19-O3-P-S2

Major Category

Pesticides

Synonyms

BAY 10756; Bayer 8169; Demox; Diethoxythiophosphoric acid ester of 2-ethylmercaptoethanol; E 1059; ENT 17,295; Ethyl systox; Mercaptofos; Mercaptophos; O,O-Diethyl 2-ethylmercaptoethyl thiophosphate; O,O-Diethyl O(and S)-2-(ethylthio)ethyl phosphorothioate mixture; Septox; Systemox; Systox; beta-Ethylmercaptoethyl diethyl thionophosphate; Phosphorothioic acid, O,O-diethyl O-(2-(ethylthio)ethyl) ester, mixt. With O,O-diethyl S-(2-(ethylthio)ethyl) phosphorothioate; [ChemIDplus] UN3018

Category

Organophosphate Insecticides

Description

Amber, oily liquid with a sulfur-like odor. [insecticide]; [NIOSH] Colorless liqiud; [ICSC]

Sources/Uses

Used as an insecticide, especially on ornamentals and nursery stock; [HSDB]

Comments

Its toxicity and potency are similar to that of parathion. [ACGIH] A cholinesterase inhibitor that may cause cardiac disorders, convulsions, cyanosis, and respiratory failure; Can be absorbed through skin; [ICSC]

Restricted

Cancelled--no longer registered as a pesticide for use in the US; [HSDB]

Exposure Assessment
BEI

Cholinesterase activity in red cells = 70% of individual's baseline, sample time discretionary; [ACGIH]

Skin Designation (ACGIH)

Yes

TLV (ACGIH)

0.05 mg/m3, inhalable fraction and vapor

PEL (OSHA)

0.1 mg/m3

IDLH (NIOSH)

10 mg/m3

Vapor Pressure

0.0003 mm Hg

Lethal Concentration

LCLo (cat) = 15 mg/m3/4hr

Explanatory Notes

The Guide in the Emergency Response Guidebook is for "Organophosphorus pesticide, liquid, toxic."

Adverse Effects
Other Poison

Organophosphate

Links to Other NLM Databases
Health Studies

Human Health Effects from Hazardous Substances Data Bank:

Toxicity Information

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Chemical Information

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Biomedical References

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Related Information in HazMap
Diseases

Occupational diseases associated with exposure to this agent:

Processes

Industrial Processes with risk of exposure: