pyridaphenthion
pyridaphenthion
CAS: 119-12-0
Molecular Formula: C14H17N2O4PS
pyridaphenthion - Names and Identifiers
| Name | pyridaphenthion |
| Synonyms | ORESTE OFUNACK CL 12503 PYRIDAPHENTHION pyridaphenthion americancyanamid12,503 American cyanamid 12,503 3(2h)-pyridazinone,6-hydroxy-2-phenyl-,o-esterwitho,o-diethylphosphoroth O,O-diethyl O-(6-oxo-1-phenyl-1,6-dihydropyridazin-3-yl) phosphorothioate 3(2H)-Pyridazinone, 6-hydroxy-2-phenyl-, O-ester with O,O-diethyl phosphorothioate |
| CAS | 119-12-0 |
| EINECS | 204-298-5 |
| InChI | InChI=1/C14H17N2O4PS/c1-3-18-21(22,19-4-2)20-13-10-11-14(17)16(15-13)12-8-6-5-7-9-12/h5-11H,3-4H2,1-2H3 |
pyridaphenthion - Physico-chemical Properties
| Molecular Formula | C14H17N2O4PS |
| Molar Mass | 340.33 |
| Density | 1.30±0.1 g/cm3(Predicted) |
| Melting Point | 54.5～56.5℃ |
| Boling Point | 416.2±28.0 °C(Predicted) |
| Flash Point | -4°C |
| Water Solubility | 100mg l-1 （20°C） |
| Vapor Presure | 1.47×10-6 Pa (20 °C) |
| Appearance | neat |
| BRN | 302741 |
| pKa | -2.09±0.40(Predicted) |
| Storage Condition | APPROX 4°C |
| Refractive Index | 1.588 |
| Physical and Chemical Properties | Pure white crystals, m.p. 54.5~56.5 ℃, vapor pressure 25.3Pa (48 ℃), 51.99 (65 ℃), 110.7Pa (90 ℃), 186.65Pa (110 ℃). Solubility of ethanol 1.25%, isopropanol 58%, chloroform 67.4%, ether 101%, methanol 226%, acetone 377%, insoluble in water. The acid, heat more stable, at 75 degrees when heating 35H, the decomposition rate of 0.9%. Unstable to strong base. Stable to light. The half-life in paddy soil was 21d. Industrial products are light yellow solids. |
| Use | High efficiency, low toxicity, low residue, broad-spectrum organophosphorus pesticides. It has the effect of killing and stomach poison, and has no internal absorption effect. It has a good control effect on a variety of puncture-suction mouthpiece and chewing insect pests. For the control of rice stem borer and Rice bract, rice leaf roller, Rice planthopper, Rice planthopper, rice leaf hopper, Rice thrips and cotton red spider and cotton aphid, red bollworm, cotton bollworm, etc. On vegetables, wheat, oil, grains, fruit trees, forests and other crops a variety of pests also have a good control effect. Control of cotton red spider 2.2~3G active ingredients/100, control of rice borer 6~9g active ingredients/100. |
pyridaphenthion - Risk and Safety
| Risk Codes | R11 - Highly Flammable R36 - Irritating to the eyes R66 - Repeated exposure may cause skin dryness or cracking R67 - Vapors may cause drowsiness and dizziness R57 - Toxic to bees R51/53 - Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. R20/22 - Harmful by inhalation and if swallowed. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. S33 - Take precautionary measures against static discharges. S16 - Keep away from sources of ignition. |
| UN IDs | 2783 |
| WGK Germany | 3 |
| RTECS | TF2275000 |
| Hazard Class | 6.1(a) |
| Packing Group | II |
pyridaphenthion - Reference Information
| NIST chemical information | Information provided by: webbook.nist.gov (external link) |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| toxicity | acute oral LD50 of male rats is 769.4 mg/kg, female is 850 mg/kg. The acute oral LD50 of male mice is 458.7 mg/kg and that of female mice is 554.6 mg/kg. Acute oral LD50 was 4800mg/kg in rabbits and 71200mg/kg in dogs. Acute percutaneous LD50 was 2300mg/kg in male rats, 2100mg/kg in females, 660mg/kg in male mice and 1100mg/kg in females. The LD50 injected intraperitoneally in rats was 105mg/kg. Mice were fed at a dose of 30mg/kg per day for 6 months without special circumstances. No carcinogenic or mutagenic effects were found in the three generations of rats. The LD50 of carp is 10mg/L (48h). The oral LD50 of Japanese quail is 68.4 mg/kg and that of pheasant is 1.162 mg/kg. |
| use | high efficiency, low toxicity, low residue, broad spectrum organophosphorus insecticide. It has the effects of contact and stomach poison, and has no systemic effect. It has good control effect on a variety of pricking mouthpart and chewing pests. Used to control rice stem borers and rice bracts, rice leaf roller, rice planthopper, rice planthopper, rice leaf hopper, rice thrips and cotton spider and cotton aphid, red bollworm, cotton bollworm, etc. It also has a good control effect on vegetables, wheat, oilseeds, miscellaneous grains, fruit trees, forests and other crops. Control cotton red spider 2.2~3g active ingredient/100 m2, control rice stem borer 6~9g active ingredient/100 m2. Used to control pests such as rice stem borer, stem borer, leafhopper, rice planthopper, cotton red spider, peanut aphid and other pests Insecticides with contact killing and stomach toxicity have good control effects on many major pests of grain, oil, vegetables, fruit trees, forests and other plants High efficiency, low toxicity, low residue, broad-spectrum organophosphorus insecticide. It has the effects of contact and stomach poison, and has no systemic effect. It has good control effect on a variety of pricking mouthpart and chewing pests. Used to control rice stem borers and rice bracts, rice leaf roller, rice planthopper, rice planthopper, rice leaf hopper, rice thrips and cotton spider and cotton aphid, red bollworm, cotton bollworm, etc. It also has a good control effect on vegetables, wheat, oilseeds, miscellaneous grains, fruit trees, forests and other crops. Control cotton red spider 2.2~3g active ingredient/100 m2, control rice stem borer 6~9g active ingredient/100 m2. Calibration instruments and devices; evaluation methods; working standards; quality assurance/quality control |
| production method | diazotization aniline is nitrided with sodium nitrite and hydrochloric acid in a ratio of 1:1.01:2.3 (mol). sodium nitrite is prepared into 35% ~ 40% aqueous solution, and diazonium salt is prepared by dropping the temperature below 5 ℃. The reduced diazonium salt reacts with excess sodium sulfite to reduce to phenylhydrazine. The ratio is 1.0:2.2 (based on aniline). The reaction temperature before hydrochloric acid neutralization was controlled at 70 ℃ for 30min. Add hydrochloric acid to adjust the Ph value to 6~7, and heat up and reflux for 0.5h. Condensation maleic anhydride reacts with phenylhydrazine (commonly used in aqueous hydrochloric acid) to prepare pyridazinone. The feed ratio of phenylhydrazine to maleic anhydride is 1:1 (based on aniline), the reaction temperature is 100~109 ℃, the time is 4h, and the operation is under negative pressure. Synthesis of pyridazinthiophos In the aqueous phase, liquid alkali and soda ash are used as deacidification agents, tritetramine is used as catalyst, the reaction temperature is 65~70 ℃, the ratio of O, O-diyl thiophosphoryl chloride to pyridazinone and liquid alkali is 1:1.1:0.9, and the end value is controlled to be 8. The total yield is about 70% based on aniline. |
| category | pesticide |
| toxicity classification | highly toxic |
| acute toxicity | oral-rat LD50: 769 mg/kg; Oral-mouse LD50: 237 mg/kg |
| flammability hazard characteristics | thermal decomposition of toxic phosphorus oxide, sulfur oxide, nitrogen oxide gas |
| storage and transportation characteristics | warehouse ventilation and low temperature drying; separate from food raw materials storage and transportation |
| fire extinguishing agent | sand, dry powder, foam |
Last Update：2024-04-09 21:21:28
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Multiple Specifications
Product Name: Pyridaphenthion Visit Supplier Webpage Request for quotationCAS: 119-12-0
Tel: 18301782025
Email: 3008007409@qq.com
Mobile: 18021002903
QQ: 3008007409
Wechat: 18301782025
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