Molecular Formula | C5H10N2O2S |
Molar Mass | 162.21 |
Density | d424 1.2946 |
Melting Point | 78°C |
Boling Point | 144°C |
Water Solubility | Soluble. 5.8 g/100 mL |
Vapor Presure | 0Pa at 20℃ |
Appearance | solid |
Exposure Limit | NIOSH REL: TWA 2.5 mg/m3; ACGIH TLV: TWA 2.5 mg/m3. |
Merck | 13,6012 |
BRN | 3081564 |
pKa | 13.27±0.46(Predicted) |
Storage Condition | 0-6°C |
Stability | Stable. Incompatible with strong bases, strong oxidizing agents. |
Refractive Index | 1.6430 (estimate) |
Physical and Chemical Properties | Melting point 78°C boiling point 144°C water-Soluble Soluble. 5.8g/100 mL |
Use | Is a broad-spectrum, rapid-acting insecticide, effective against aphids, cotton bollworm and other pests, can be used for food, cotton, vegetables, tobacco, fruit and other crops |
Risk Codes | R28 - Very Toxic if swallowed R50/53 - Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. R36 - Irritating to the eyes R20/21/22 - Harmful by inhalation, in contact with skin and if swallowed. R11 - Highly Flammable R36/37/38 - Irritating to eyes, respiratory system and skin. |
Safety Description | S1/2 - Keep locked up and out of the reach of children. S22 - Do not breathe dust. S36/37 - Wear suitable protective clothing and gloves. 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. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S16 - Keep away from sources of ignition. S36 - Wear suitable protective clothing. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S28 - After contact with skin, wash immediately with plenty of soap-suds. |
UN IDs | UN 2757 |
WGK Germany | 3 |
RTECS | AK2975000 |
HS Code | 29309090 |
Hazard Class | 6.1(a) |
Packing Group | II |
Toxicity | LD50 orally in male rats: 17 mg/kg (Kaplan, Sherman) |
Raw Materials | Methylthio acetaldoxime Coke(coal) Thiourea Dimethyl sulfate Chlorine Chlorine Methylamine Acetaldehyde acetaldehyde oxime |
The product is a mixture of cis and trans isomers, mainly in CIS. White crystals. Solubility% (mass) at 25 ° C; Water 5.8, methanol 100, ethanol 142, isopropanol 22, acetone 73. In alkaline medium or at high temperatures or by sunlight are susceptible to decomposition.
acetaldehyde is reacted with hydroxylamine sulfate in an alkaline solution to prepare acetaldoxime, which is dissolved in N-methylpyrrolidone to obtain chloroacetaldoxime by chlorination. Methanethiol and water were added to the chloro-acetaldoxime-producing solution, and a 50% sodium hydroxide solution was added dropwise at 5 ° C. Until the pH value was 6 to 7 to prepare a methomyl pyrrolidone solution of methomyl oxime. The reaction was carried out by adding triethylamine and methyl isocyanate to give oximarb.
broad-spectrum insecticide. It has the function of internal absorption, contact and stomach poison. Suitable for cotton, tobacco, fruit trees, vegetables to control aphids, moths, land tiger and other pests, is the current control of resistant cotton aphid good alternative varieties. It is also used as an intermediate of thiobarb.
oral LD50 of male rats: 17 mg/ kg.