-
Name
O-Methyl-O-(4-nitrophenyl)-O-ethyl-thiophosphate
- EINECS
- CAS No. 2591-57-3
- Density 1.365g/cm3
- Solubility 40mg/L(temperature not stated)
- Melting Point -12--8 °C
- Formula C9H12 N O5 P S
- Boiling Point 349°Cat760mmHg
- Molecular Weight 245.25
- Flash Point 164.9°C
- Transport Information
- Appearance
- Safety Poison by ingestion and skin contact. When heated to decomposition it emits toxic fumes of NOx, POx, and SOx.
- Risk Codes
-
Molecular Structure
- Hazard Symbols
- Synonyms Phosphorothioicacid, O-ethyl O-methyl O-(p-nitrophenyl) ester (6CI,7CI,8CI); Ethylmethylthiophos;Methylethylthiofos; Methylethylthiophos
- PSA 115.41000
- LogP 4.05480
Ethylmethylthiophos Chemical Properties
IUPAC Name: Ethoxy-methoxy-(4-nitrophenoxy)-sulfanylidene-λ5-phosphane
Synonyms of Ethylmethylthiophos (CAS NO.2591-57-3): Methylethylthiofos ; Methylethylthiophos ; O-Ethyl-O-methyl-O-p-nitrofenylester kyseliny thiofosforecne ; O-Methyl O-ethyl O-p-nitrophenyl thiophosphate ; Phosphorothioic acid, O-ethyl O-methyl O-(4-nitrophenyl) ester (9CI) ; Phosphorothioic acid, O-ethyl O-methyl O-(p-nitrophenyl) ester
CAS NO: 2591-57-3
Molecular Formula: C9H12NO5PS
Molecular Weight : 277.234
Molecular Structure: .png)
H bond acceptors: 6
H bond donors: 0
Freely Rotating Bonds: 6
Polar Surface Area: 115.41 Å2
Index of Refraction: 1.567
Molar Refractivity: 66.36 cm3
Molar Volume: 203 cm3
Surface Tension: 54.6 dyne/cm
Density: 1.365 g/cm3
Flash Point: 164.9 °C
Enthalpy of Vaporization: 57 kJ/mol
Boiling Point: 349 °C at 760 mmHg
Vapour Pressure: 9.73E-05 mmHg at 25°C
Ethylmethylthiophos Toxicity Data With Reference
| Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
|---|---|---|---|---|---|
| cat | LD50 | oral | 2800ug/kg (2.8mg/kg) | "Prehled Prumyslove Toxikologie; Organicke Latky," Marhold, J., Prague, Czechoslovakia, Avicenum, 1986Vol. -, Pg. 1158, 1986. | |
| mouse | LD50 | oral | 4200ug/kg (4.2mg/kg) | BEHAVIORAL: MUSCLE WEAKNESS BEHAVIORAL: MUSCLE CONTRACTION OR SPASTICITY) LUNGS, THORAX, OR RESPIRATION: DYSPNEA | Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases. Vol. 6(2), Pg. 53, 1962. |
| rabbit | LDLo | skin | 100mg/kg (100mg/kg) | "Prehled Prumyslove Toxikologie; Organicke Latky," Marhold, J., Prague, Czechoslovakia, Avicenum, 1986Vol. -, Pg. 1158, 1986. | |
| rat | LC50 | inhalation | 15mg/m3 (15mg/m3) | "Prehled Prumyslove Toxikologie; Organicke Latky," Marhold, J., Prague, Czechoslovakia, Avicenum, 1986Vol. -, Pg. 1158, 1986. | |
| rat | LD50 | oral | 2850ug/kg (2.85mg/kg) | BEHAVIORAL: MUSCLE WEAKNESS BEHAVIORAL: MUSCLE CONTRACTION OR SPASTICITY) LUNGS, THORAX, OR RESPIRATION: DYSPNEA | Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases. Vol. 6(2), Pg. 53, 1962. |
Ethylmethylthiophos Safety Profile
Poison by ingestion and skin contact. When Ethylmethylthiophos (CAS NO.2591-57-3) is heated to decomposition, it emits toxic fumes of NOx, POx, and SOx.
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