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| CAS No.: | 3254-63-5 |
|---|---|
| Name: | dimethyl 4-(methylthio)phenyl phosphate |
| Article Data: | 2 |
| Molecular Structure: | |
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| Formula: | C9H13O4PS |
| Molecular Weight: | 248.25 |
| Density: | 1.25g/cm3 |
| Boiling Point: | 300.9ºC at 760 mmHg |
| Flash Point: | 135.8ºC |
| Safety: | Poison by ingestion, skin contact, and subcutaneous routes. When heated to decomposition it emits very toxic fumes of SOx and POx. See also ESTERS. |
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Chemistry
IUPAC Name: Dimethyl (4-methylsulfanylphenyl) phosphate
Synonyms of Phosphoric acid dimethyl-p-(methylthio)phenyl ester (CAS NO.3254-63-5) : Dimethyl 4-(methylsulfanyl)phenyl phosphate ; Phosphoric acid, dimethyl 4-(methylthio)phenyl ester ; Dimethyl 4-(methylthio)phenyl phosphate ; Phosphoric acid, dimethyl p-(methylthio)phenyl ester
CAS NO: 3254-63-5
Molecular Formula:C9H13O4PS
Molecular Weight :248.2359
Molecular Structure :
Index of Refraction:1.524
Surface Tension: 43 dyne/cm
Density: 1.25 g/cm3
Flash Point: 135.8 °C
Enthalpy of Vaporization: 51.94 kJ/mol
Boiling Point: 300.9 °C at 760 mmHg
Vapour Pressure: 0.00194 mmHg at 25°C
Appearance: Phosphoric acid dimethyl-p-(methylthio)phenyl ester (CAS NO.3254-63-5) is colorless liquid.
Uses
Phosphoric acid dimethyl-p-(methylthio)phenyl ester (CAS NO.3254-63-5) is used as a contact and systemic insecticide and acaricide.
Toxicity Data With Reference
| Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
|---|---|---|---|---|---|
| bird - wild | LD50 | oral | 560ug/kg (0.56mg/kg) | Toxicology and Applied Pharmacology. Vol. 21, Pg. 315, 1972. | |
| mouse | LD50 | oral | 18mg/kg (18mg/kg) | Archives of Toxicology. Vol. 34, Pg. 103, 1975. | |
| rabbit | LD50 | skin | 48mg/kg (48mg/kg) | "Pesticide Index," Frear, E.H., ed., State College, PA, College Science Pub., 1969Vol. 4, Pg. 189, 1969. | |
| rat | LD50 | oral | 7mg/kg (7mg/kg) | Toxicology and Applied Pharmacology. Vol. 21, Pg. 315, 1972. |
Consensus Reports
EPA Extremely Hazardous Substances List.
Safety Profile
Poison by ingestion, skin contact, and subcutaneous routes. When heated to decomposition it emits very toxic fumes of SOx and POx. See also ESTERS.
Hazard Codes
T+
Risk Statements 27/28
R27/28: Very Toxic in contact with skin and if swallowed
Safety Statements 28-36/37-45
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.)
Specification
Air & Water: Reactions Hydrolyzed by alkalis at 99.5 F.
Reactivity Profile: Organophosphates are susceptible to formation of highly toxic and flammable phosphine gas in the presence of strong reducing agents such as hydrides. Partial oxidation by oxidizing agents may result in the release of toxic phosphorus oxides.
Health Hazard :Highly toxic by oral or skin exposure. Its effects are probably due to action on the nervous system. Gc-6506-wettable powder granules may cause death through respiratory arrest.
Fire Hazard :When heated to decomposition, Gc-6506-wettable powder granules emits very toxic fumes of sulfur oxides and phosphorus oxides. (Non-Specific -- Organophosphorus Pesticide, Liquid, n.o.s.) Fire and runoff from fire control water may produce irritating or poisonous gases. Hydrolyzed by alkalies at 99.5F.