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Cas Database |
| Name |
Isomalathion |
EINECS | N/A |
| CAS No. | 3344-12-5 | Density | 1.273g/cm3 |
| PSA | 139.31000 | LogP | 2.72200 |
| Solubility | N/A | Melting Point |
N/A |
| Formula | C10H19 O6 P S2 | Boiling Point | 413.6°Cat760mmHg |
| Molecular Weight | 330.363 | Flash Point | 203.9°C |
| Transport Information | N/A | Appearance | N/A |
| Safety | A poison by ingestion. When heated to decomposition it emits toxic vapors of POx and SOx. | Risk Codes | 22-50/53 |
| Molecular Structure |
|
Hazard Symbols |
 
|
| Synonyms |
Butanedioicacid, [[methoxy(methylthio)phosphinyl]thio]-, diethyl ester (9CI); Succinicacid, mercapto-, diethyl ester, S-ester with O,S-dimethyl phosphorodithioate(6CI,7CI,8CI); 8063HC; Isomalathion; O,S-Dimethyl-S-(1,2-dicarboethoxy)ethylphosphorodithioate; Phosphorodithioic acid, O,S-dimethyl ester, S-ester withdiethyl mercaptosuccinate; S-Methyl malathion |
Article Data | 4 |
Isomalathion Chemical Properties
IUPAC Name: Diethyl 2-[methoxy(methylsulfanyl)phosphoryl]sulfanylbutanedioate
Synonyms of Isomalathion (CAS NO.3344-12-5) : ((Methoxy(methylthio)phosphinyl)thio)butanedioic acid diethyl ester ; Butanedioic acid, ((methoxy(methylthio)phosphinothioyl)thio)diethyl ester ; Isomalathion ; Mercaptosuccinic acid diethyl ester, S-ester with O,S-dimethylphosphorodithioate ; S-Methylmalathion
Product Categories: IEnvironmental Standards;Alphabetic;Analytical Standards;Metabolites;Pesticides&Metabolites
CAS NO:3344-12-5
Molecular Formula:C10H19O6PS2
Molecular Weight :330.358
Molecular Structure :
Index of Refraction:1.501
Surface Tension: 44.4 dyne/cm
Density: 1.273 g/cm3
Flash Point: 203.9 °C
Enthalpy of Vaporization: 66.64 kJ/mol
Boiling Point: 413.6 °C at 760 mmHg
Vapour Pressure: 4.74E-07 mmHg at 25°C
Isomalathion Production
Preparation Products: guanethidine
Isomalathion Toxicity Data With Reference
| Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
|---|---|---|---|---|---|
| rat | LD50 | oral | 113mg/kg (113mg/kg) | Archives of Toxicology. Vol. 42, Pg. 95, 1979. |
Isomalathion Safety Profile
A poison by ingestion. When heated to decomposition it emits toxic vapors of POx and SOx.
Hazard Codes 
Xn,
N
Risk Statements 22-50/53
R22: Isomalathion (CAS NO.3344-12-5) is harmful if swallowed.
R50/53:Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
Safety Statements 24-60-61
S24:Avoid contact with skin.
S60:This material and its container must be disposed of as hazardous waste.
S61:Avoid release to the environment. Refer to special instructions / safety data sheets.
RIDADR UN 1208 3/PG 2
RTECS WM8425000
Isomalathion Specification
Isomalathion (CAS NO.3344-12-5) is an impurity found in some batches of malathion, depending on its method of preparation. It is significantly more toxic to humans than malathion.
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