| Molecular Formula | C8H16NO4PS2 |
| Molar Mass | 285.32 |
| Density | 1.348±0.06 g/cm3(Predicted) |
| Melting Point | 65°C |
| Boling Point | 401.1±55.0 °C(Predicted) |
| Appearance | morphological solid |
| pKa | -1.25±0.20(Predicted) |
| Physical and Chemical Properties | The chemical properties are white crystals. Melting point 63-64 ℃. The solubility in water is 0.5%, which can be dissolved in most organic solvents. |
| Use | The use of Mao fruit has strong absorption, high efficiency, low toxicity and other characteristics, mainly used for the control of cotton aphid, vegetable aphid, cotton red spider, cotton thrips and other pests, its efficacy is similar to Dimethoate. |
| Risk Codes | R23/24/25 - Toxic by inhalation, in contact with skin and if swallowed. R50/53 - Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. |
| Safety Description | S13 - Keep away from food, drink and animal foodstuffs. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) 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. |
| UN IDs | 2783 |
| Hazard Class | 6.1(b) |
| Packing Group | III |
production method
It is obtained by direct condensation of chloroacetylmorpholine and sodium O,O-dimethyl dithiophosphate. Process conditions: the ingredient ratio is O,O-dimethyl dithiophosphate sodium: chloroacetylmorpholine = 1.05-1.10 (molar ratio). Add O,O-dimethyl dithiophosphate sodium to the reaction bottle and cool it in an ice bath. When the material temperature drops below -8 ℃, add morpholine (above 30%) and keep the temperature below -5 ℃. Chloroacetyl chloride is added dropwise, and when the pH value is close to 7, liquid alkali is immediately added dropwise. After dropping chloroacetyl chloride, stir and react at -8 ℃ for 1h. Then add benzene, stir at 50-60 ℃ for 1h, cool down, stand still, separate the benzene layer, and distill under reduced pressure to obtain the fruit. Formulated into 25% emulsion or powder.
category
Pesticides
toxicity classification
High toxicity
acute toxicity
oral-rat LD50: 190 mg/kg; oral-mouse LD50: 130 mg/kg
flammability hazard characteristics
Decomposition of toxic phosphorus oxide, sulfur oxide, nitrogen oxide gas by heating
storage and transportation features
The warehouse is ventilated and dry at low temperature; stored and transported separately from food raw materials
fire extinguishing agent
Sand, dry powder, foam
| EPA chemical information | Morphothion (144-41-2) |