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| CAS No.: | 8065-48-3 | |
|---|---|---|
| Name: | DEMETON | |
| Molecular Structure: | ||
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| Formula: | C8H19O3PS2•C8H19O3PS2 | |
| Molecular Weight: | 516.72 | |
| Synonyms: | Ethyl systox;Systox;Septox;Caswell No. 279;Systemox;Bayer 8169;Demox;Demeton [BSI]; | |
| Density: | g/cm3 | |
| Boiling Point: | 297.2°Cat760mmHg | |
| Flash Point: | 133.6°C | |
| Hazard Symbols: | Toxic by skin absorption; cholinesterase inhibitor. Use may be restricted. TLV: 0.01 ppm. | |
| Risk Codes: | R27/28; R50 | |
| Safety: | A deadly human poison by ingestion. Poison experimentally by ingestion, inhalation, skin contact, intramuscular, intravenous, subcutaneous, and intraperitoneal routes. An experimental teratogen. Human mutation data reported. An insecticide that inhibits cholinesterase in humans and animals and thus causes the buildup of acetylcholine. Doses are cumulative. If illness occurs, it is acute in nature, whether caused by a single large dose or by repeated exposure. Persons poisoned with demeton may be expected to show the following symptoms: headache, giddiness, blurred vision, weakness, nausea, diarrhea, and discomfort in the chest. When heated to decomposition it emits very toxic fumes of POx and SOx. See also PARATHION and DEMETON; DEMETON-O-METHYL; DEMETON-O-METHYL SULFOXIDE; DEMETON-S; DEMETON-S-METHYL; DEMETON-S-METHYL-SULPHONE. | |
Analytical Methods: | For occupational chemical analysis use NIOSH: Demeton, 5514. |
|
| PSA: | 190.83000 | |
| LogP: | 7.35800 | |
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Chemistry
Empirical Formula: C16H38O6P2S4
Molecular Weight: 516.6768
Flash Point: 133.6 °C
Boiling Point: 297.2 °C at 760 mmHg
Vapour Pressure: 0.00242 mmHg at 25 °C
Product categories of Demox (CAS NO.8065-48-3): Acaricides;Insecticides;Metabolites;Pesticides & Metabolites
Structure of Demox (CAS NO.8065-48-3):
Uses
Demox (CAS NO.8065-48-3) is mainly used to control cotton and fruit trees piercing-sucking mouthparts aphids and spider mite pests, or coated stem for controlling sorghum aphids. Efficacy can be maintained generally 2-4 weeks. EC 150-200 times of coated stem can prevent high-dyed aphids. EC 10-20 times of dressing the trunk can prevent citrus aphid, rust tick, scale insects.
Production
Demox (CAS NO.8065-48-3) is derived by the reaction of Hydroxy-B sulfide with Thiophosphoryl chloride.
Toxicity Data With Reference
| Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
|---|---|---|---|---|---|
| bird - wild | LD50 | oral | 1780ug/kg (1.78mg/kg) | ASTM Special Technical Publication. Vol. (680), Pg. 157, 1979. | |
| bird - wild | LD50 | skin | 1800ug/kg (1.8mg/kg) | Toxicology and Applied Pharmacology. Vol. 26, Pg. 154, 1973. | |
| cat | LCLo | inhalation | 15mg/m3/4H (15mg/m3) | "Toxicometric Parameters of Industrial Toxic Chemicals Under Single Exposure," Izmerov, N.F., et al., Moscow, Centre of International Projects, GKNT, 1982Vol. -, Pg. 52, 1982. | |
| cat | LD50 | intramuscular | 3900ug/kg (3.9mg/kg) | BEHAVIORAL: TREMOR LUNGS, THORAX, OR RESPIRATION: DYSPNEA GASTROINTESTINAL: NAUSEA OR VOMITING | "Gigiena i Toksikologiya Novykh Pestitsidov i Klinika Otravlenii, Doklady Vsesoyuznoi Konferentsii, 2nd, 1962," Hygiene and Toxicology of New Pesticides and Clinical Aspects of Poisoning, Medved, L.I., et al., eds., Komiteta Po Izucheniiu i Reglamenta-tsii Indokhimikato Glavnoi Gosudarstvennoi Sanitarnoi Inspectsii USSR, 1962Vol. -, Pg. 220, 1962. |
| dog | LD50 | intramuscular | 3650ug/kg (3.65mg/kg) | BEHAVIORAL: TREMOR LUNGS, THORAX, OR RESPIRATION: DYSPNEA GASTROINTESTINAL: NAUSEA OR VOMITING | "Gigiena i Toksikologiya Novykh Pestitsidov i Klinika Otravlenii, Doklady Vsesoyuznoi Konferentsii, 2nd, 1962," Hygiene and Toxicology of New Pesticides and Clinical Aspects of Poisoning, Medved, L.I., et al., eds., Komiteta Po Izucheniiu i Reglamenta-tsii Indokhimikato Glavnoi Gosudarstvennoi Sanitarnoi Inspectsii USSR, 1962Vol. -, Pg. 220, 1962. |
| duck | LD50 | oral | 7190ug/kg (7.19mg/kg) | Toxicology and Applied Pharmacology. Vol. 47, Pg. 451, 1979. | |
| human | LDLo | oral | 171ug/kg (0.171mg/kg) | "Clinical Memoranda on Economic Poisons," U.S. Dept. HEW, Public Health Service, Communicable Disease Center, Atlanta, GA, 1956Vol. -, Pg. 1, 1956. | |
| man | TDLo | oral | 144mg/kg/24D- (144mg/kg) | Toxicology and Applied Pharmacology. Vol. 14, Pg. 603, 1969. | |
| mouse | LD50 | intraperitoneal | 4mg/kg (4mg/kg) | Proceedings of the Society for Experimental Biology and Medicine. Vol. 129, Pg. 699, 1968. | |
| mouse | LD50 | intravenous | 3900ug/kg (3.9mg/kg) | Bratislavske Lekarske Listy. Vol. 38, Pg. 151, 1958. | |
| mouse | LD50 | oral | 7850ug/kg (7.85mg/kg) | Bratislavske Lekarske Listy. Vol. 38, Pg. 151, 1958. | |
| mouse | LD50 | subcutaneous | 15mg/kg (15mg/kg) | Annales Pharmaceutiques Francaises. Vol. 11, Pg. 286, 1953. | |
| pigeon | LD50 | oral | 8480ug/kg (8.48mg/kg) | Toxicology and Applied Pharmacology. Vol. 20, Pg. 57, 1971. | |
| quail | LD50 | oral | 8480ug/kg (8.48mg/kg) | Toxicology and Applied Pharmacology. Vol. 20, Pg. 57, 1971. | |
| rabbit | LD50 | intraperitoneal | 3250ug/kg (3.25mg/kg) | Bratislavske Lekarske Listy. Vol. 38, Pg. 151, 1958. | |
| rabbit | LD50 | oral | 5mg/kg (5mg/kg) | Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 27(8), Pg. 97, 1962. | |
| rabbit | LD50 | skin | 24mg/kg (24mg/kg) | Special Publication of the Entomological Society of America. Vol. 78-1, Pg. 28, 1978. | |
| rabbit | LD50 | subcutaneous | 24mg/kg (24mg/kg) | Interagency Collaborative Group on Environmental Carcinogenesis, National Cancer Institute, Memorandum, June 17, 1974Vol. 17JUN1974, | |
| rat | LCLo | inhalation | 15mg/m3/4H (15mg/m3) | "Toxicometric Parameters of Industrial Toxic Chemicals Under Single Exposure," Izmerov, N.F., et al., Moscow, Centre of International Projects, GKNT, 1982Vol. -, Pg. 52, 1982. | |
| rat | LD50 | intraperitoneal | 2500ug/kg (2.5mg/kg) | Advances in Pest Control Research. Vol. 4, Pg. 117, 1961. | |
| rat | LD50 | intravenous | 1750ug/kg (1.75mg/kg) | BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY) BEHAVIORAL: ATAXIA GASTROINTESTINAL: "HYPERMOTILITY, DIARRHEA" | Bratislavske Lekarske Listy. Vol. 38, Pg. 151, 1958. |
| rat | LD50 | oral | 1700ug/kg (1.7mg/kg) | Toxicology and Applied Pharmacology. Vol. 21, Pg. 315, 1972. | |
| rat | LD50 | skin | 8200ug/kg (8.2mg/kg) | BEHAVIORAL: TREMOR BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD BEHAVIORAL: EXCITEMENT | Toxicology and Applied Pharmacology. Vol. 2, Pg. 88, 1960. |
| rat | LDLo | intramuscular | 3mg/kg (3mg/kg) | BEHAVIORAL: TREMOR GASTROINTESTINAL: "HYPERMOTILITY, DIARRHEA" GASTROINTESTINAL: NAUSEA OR VOMITING | "Gigiena i Toksikologiya Novykh Pestitsidov i Klinika Otravlenii, Doklady Vsesoyuznoi Konferentsii, 2nd, 1962," Hygiene and Toxicology of New Pesticides and Clinical Aspects of Poisoning, Medved, L.I., et al., eds., Komiteta Po Izucheniiu i Reglamenta-tsii Indokhimikato Glavnoi Gosudarstvennoi Sanitarnoi Inspectsii USSR, 1962Vol. -, Pg. 220, 1962. |
Consensus Reports
EPA Genetic Toxicology Program. EPA Extremely Hazardous Substances List.
Safety Profile
A deadly human poison by ingestion. Poison experimentally by ingestion, inhalation, skin contact, intramuscular, intravenous, subcutaneous, and intraperitoneal routes. An experimental teratogen. Human mutation data reported. An insecticide that inhibits cholinesterase in humans and animals and thus causes the buildup of acetylcholine. Doses are cumulative. If illness occurs, it is acute in nature, whether caused by a single large dose or by repeated exposure. Persons poisoned with demeton may be expected to show the following symptoms: headache, giddiness, blurred vision, weakness, nausea, diarrhea, and discomfort in the chest. When heated to decomposition it emits very toxic fumes of POx and SOx. See also PARATHION and DEMETON; DEMETON-O-METHYL; DEMETON-O-METHYL SULFOXIDE; DEMETON-S; DEMETON-S-METHYL; DEMETON-S-METHYL-SULPHONE.
Hazard Codes: 
T+
N
Risk Statements: 27/28-50
R27:Very toxic in contact with skin.
R28:Very toxic if swallowed.
R50:Very toxic to aquatic organisms.
Safety Statements: 28-36/37-45-61
S28:After contact with skin, wash immediately with plenty of soap-suds.
S36/37:Wear suitable protective clothing and gloves.
S45:In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)
S61:Avoid release to the environment. Refer to special instructions / safety data sheets.
Standards and Recommendations
OSHA PEL: TWA 0.1 mg/m3 (skin)
ACGIH TLV: TWA 0.05 ppm (skin)(sensitizer); Not Classifiable as a Human Carcinogen
DFG MAK: 0.01 ppm (0.11 mg/m3)
Analytical Methods
For occupational chemical analysis use NIOSH: Demeton, 5514.
Specification
Demox ,its cas register number is 8065-48-3. It also can be called Demeton ; Phosphorothioic acid, O,O-diethyl O-(2-(ethylthio)ethyl) ester, mixt. with O,O-diethyl S-(2-(ethylthio)ethyl) phosphorothioate ; Demeton Systox and Systox . It may release sulfur oxides and phosphoric acid. Solvent carrier vapors may travel on ground to ignition source. 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. It is readily absorbed through the skinand is extremely toxic.