Supracide
Methidathion
CAS: 950-37-8
Molecular Formula: C6H11N2O4PS3
Supracide - Names and Identifiers
| Name | Methidathion |
| Synonyms | DMTP Ultracide Supracide Suprathion Supracide(R) METHIDATHION 'LGC' (1207) Methidathion Methiadathion METHIDIATHION Supracide Emulsion S-[(5-Methoxy-2-Oxo-1,3,4-Thiadiazol-3(2H)-Yl)Methyl] O,O-Dimethyl Phosphorodithioate O,O-Dimethyl Phosphorodithioate S-Ester With 4-[Mercaptomethyl]-2-Methoxy-Delta2-1,3,4-Thiadiazolin-5-One O,O-Dimethyl Phosphorodithioate, S-Ester With 4-[Mercaptomethyl]-2-Methoxy-Delta''-1,3,4-Thiadiazolin-5-One |
| CAS | 950-37-8 |
| EINECS | 213-449-4 |
| InChI | InChI=1/C6H11N2O4PS3/c1-10-5-7-8(6(9)16-5)4-15-13(14,11-2)12-3/h4H2,1-3H3 |
Supracide - Physico-chemical Properties
| Molecular Formula | C6H11N2O4PS3 |
| Molar Mass | 302.33 |
| Density | 1.51 g/cm3 |
| Melting Point | 39-40°C |
| Boling Point | 347.7±52.0 °C(Predicted) |
| Flash Point | 100°C |
| Water Solubility | 0.024 g/100 mL |
| Solubility | DMSO (Slightly), Methanol (Slightly) |
| Vapor Presure | 2.5×10-4 Pa (20 °C) |
| Appearance | solid |
| Color | Colourless |
| BRN | 619915 |
| pKa | -4.17±0.40(Predicted) |
| Storage Condition | 0-6°C |
| Stability | Air Sensitive, Moisture Sensitive |
| Refractive Index | 1.651 |
| Physical and Chemical Properties | Pure product is colorless crystal. M. p.39 ~ 40 ℃ (1.33Pa), relative density 1.495 (20 ℃), vapor pressure 1.87 × 10-4Pa. The solubility at 20 ℃ is: cyclohexanone 850g/kg, acetone 690g/kg, xylene 600g/kg, ethanol 260g/kg, water 250mg/kg. Stable at room temperature for 2 years, stable in weakly acidic and neutral media, easy to hydrolyze under alkaline conditions, non-flammable and non-explosive. |
| Use | It is an ideal scale-killing agent, which can also treat mites, whitefly and aphids, and has special effects on pear-growing lice |
Supracide - Risk and Safety
| Risk Codes | R21 - Harmful in contact with skin R28 - Very Toxic if swallowed R50/53 - Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. R41 - Risk of serious damage to eyes R26 - Very Toxic by inhalation R24 - Toxic in contact with skin |
| Safety Description | S22 - Do not breathe dust. 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.) 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. S39 - Wear eye / face protection. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. |
| UN IDs | UN 2811 |
| WGK Germany | 3 |
| RTECS | TE2100000 |
| Hazard Class | 6.1(a) |
| Packing Group | II |
| Toxicity | LD50 in adult male, female rats (mg/kg): 31, 32 orally (Gaines, Linder) |
Supracide - Introduction
This standard substance is mainly used for measuring instrument calibration, analytical method evaluation and quality control, as well as the content determination and residue detection of corresponding components in related fields such as food, hygiene, environment and agriculture. It can also be used for value traceability or as a standard liquid reserve solution. It is diluted step by step and configured into various standard solutions for work. Preparation of 1. Samples This standard substance is made of pure Kaphos with accurate purity and fixed value as raw material, chromatographic acetone as solvent, and accurately configured by weight-volume method. Kaphos, English name: Methidathion,CAS number: 950-37-8 2. traceability and fixed value method This standard substance takes the configuration value as the standard value, and uses high performance liquid chromatography-diode array detector (HPLC-DAD) This batch of standard substances and quality control control samples are compared to verify the preparation value. By using preparation methods, measurement methods and measuring instruments that meet the requirements of metrological characteristics, the traceability of the value of the standard substance is guaranteed. 3. characteristic measure value and uncertainty (see certificate for details) Number name standard value (ug/mL) Relative expansion uncertainty (%)(k = 2)BW10202 The uncertainty of the standard value of the 1002 of phospin in acetone is mainly composed of raw material purity, weighing, constant volume, uniformity, stability and other uncertainty components. 4. uniformity test and stability inspection According to the JJF1343-2012 [General Principles and Statistical Principles of Standard Substance Setting], random sampling of sub-packed samples is carried out, uniformity test of solution concentration is carried out, and stability inspection is carried out. The results show that the standard material has good uniformity and stability. The standard substance is valid for 36 months from the date of setting the value. The development unit will continue to monitor the stability of the standard substance. If the value changes are found during the validity period, the user will be notified in time. 5. packaging, transportation and storage, use and precautions 1. Packaging: This standard substance is packed in borosilicate glass ampoules, about 1.2 mL/branch. When removing or diluting, the pipette quantity shall prevail. 2. Transportation and storage: ice bags should be transported, and extrusion and collision should be avoided during transportation; storage under freezing and dark conditions. 3. Use: Balance at room temperature (20 3 ℃) before unsealing, and shake well. Once the ampoule is opened, it should be used immediately and cannot be used as a standard substance after being fused again.
Last Update：2022-10-16 17:30:20
Supracide - Reference Information
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Introduction | phosphorus-killing is a kind of phosphorodithioate insecticide, which is a broad-spectrum organophosphorus insecticide. It has the effect of killing and stomach poison on pests and mites. There are special effects in the prevention and control of quinones, but also to control a variety of cotton pests. |
| mechanism of action | Anti-phosphorus has gastric toxicity and contact killing effect, can seep human plant tissue, not afraid of wind and rain, can kill the leaves or skin of pests, can also kill the back of the leaf without contact with pesticides. |
| residual period and phytotoxicity | The apple was Diluted 1000 times, and after 20 days, the control effect on the larvae of the apple moth is still 95%, the citrus brown garden, the application of diluted 1000 times the drug, the residual effect of more than 30d. It was safe for crops to kill phosphorus. The Apple Tree leaves were sprayed with 400-fold dilution of 40 EC and observed continuously for 10 days without phytotoxicity. |
| toxicity | The acute oral LD50 of male and female rats were 43.8mg/kg and 26mg/kg, respectively, rat acute percutaneous LD50150mg/kg(1546mg/kg), Rabbit 200mg/kg. No eye irritation, mild skin irritation. The maximum non-effective dose in rats fed for 2 years was 0.15mg/kg (0.25mg/kg) per day. No teratogenic, carcinogenic or mutagenic effect was found in animal test, and no abnormality was found in the third generation reproductive test and neurotoxicity test. Rainbow trout lc500.01 mg/l (96H). |
| Use | has the effect of killing and stomach poison; Has the effect of penetration, but no absorption; Broad spectrum, high toxicity insecticidal, acaricide, there are special effects on the control of scale insects. For the control of cotton aphid, Cotton leaf hopper and cotton bug, spray with 40% emulsifiable concentrate 7.5~11.3/100m2 on water to prevent and control citrus verrucous verrucifera, pericarpium papyrifera and wax verrucosa (male), spray with 800~1000 times of liquid, if spray with 1000~3000 times of liquid, and spray again at an interval of 20d. To control cotton bollworm and pink bollworm, spray 40% ~ 15kg of water with 15~30mL/100m2 of 11.3 EC. Prevention and Control of fruit pests should be applied before flowering, overwintering insect larvae and egg hatching are effective, in addition, can also be used for prevention and control of tea small green leaf. used for the control of citrus, Apple, etc., but also for sunflower, walnut, peach and walnut, etc. is an ideal scale insecticide, can also treat mites, whitefly, aphids, have special effects on the pear lice non-systemic insecticides, used to control the sagittal apex of fruit trees, cotton, vegetables and other crops, wax, Brown rotunda, powder, cotton aphid, cotton red spider, cotton bollworm, alfalfa elephant insects and other pests, harmful mites. Calibration instruments and devices; Evaluation methods; Working standards; Quality assurance/quality control; Other. |
| production method | preparation of carbonyl hydrazine sodium hydroxide, water, methanol were added to the reaction vessel and stirred for 2H, dithiocarbon was added dropwise to cool down to 23~25 ℃ for 2h, and hydrazine hydrate was added dropwise to (30±2)℃ for 1.5h and cooled to 0 ℃, crystals of off-white carbonyl hydrazine were obtained by centrifugation. Preparation of thiadiazolone water and carbonyl hydrazine were added into the reaction pot, sulfuric acid was added to control the temperature of 55~60 ℃, chloromethyl chloroformate was added dropwise, about 2H Dropwise,(60±2)℃ for 2H, the mixture was cooled to 15 ° C., centrifuged, and washed with cold water to obtain pale yellow crystals of thiadiazolone. Synthesis of anti-phosphorus 75% sulfuric acid, thiadiazolone, solvent A, catalyst, heating to 25 ℃, adding methyl sulfide, cooling to 20 ℃ and adding formaldehyde, temperature control: 20~25 ℃, Dropwise rising to 40 ℃ for 2H, standing to remove the waste acid layer, adding water to wash twice, and removing 1/2 of solvent A and water below 70 ℃, the crystals are cooled to 0 ° C. And centrifuged to obtain a white phosphorus-killing agent with a content of 96%-98%. The mother liquor is returned to the synthesis of phosphorus-killing. The content is 96% ~ 98%, and the yield is 42%. The synthesis of chlordiazepoxide is also possible with 5-methoxy-2-oxo-1, 3, 3-chloromethyl-5-methoxy-2-oxo-1, 3, 5-thiodixene was prepared by the reaction of 4-thioxocene with formaldehyde and thionyl chloride, it was prepared by reacting it with O,O-dimethyl dithiophosphoric acid. It is reported that the phosgene method was used to synthesize thiadiazolone from Zaba-Jiaji company and yam company in Israel. The purity of the phosphorus is 96% ~ 97%. |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 21:04:16
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