1-tert-butyl-3-(2,6-di-isopropyl-4-phenoxyphenyl)thiourea
Diafenthiuron
CAS: 80060-09-9
Molecular Formula: C23H32N2OS
1-tert-butyl-3-(2,6-di-isopropyl-4-phenoxyphenyl)thiourea - Names and Identifiers
1-tert-butyl-3-(2,6-di-isopropyl-4-phenoxyphenyl)thiourea - Physico-chemical Properties
| Molecular Formula | C23H32N2OS |
| Molar Mass | 384.58 |
| Density | 1.0367 (rough estimate) |
| Melting Point | 144.6-147.7°C |
| Boling Point | 448.8±55.0 °C(Predicted) |
| Flash Point | 149°C |
| Solubility | Chloroform (Slightly), Methanol (Slightly) |
| Vapor Presure | 3.02E-08mmHg at 25°C |
| Appearance | neat |
| Color | White to Off-White |
| Merck | 13,2988 |
| BRN | 8343025 |
| pKa | 12?+-.0.70(Predicted) |
| Storage Condition | 0-6°C |
| Refractive Index | 1.5950 (estimate) |
| Physical and Chemical Properties | White Crystal, m. P. 149.6 °c, vapor pressure 2 x 10-6PA (220 x 10-9Pa (20 °c)). Solubility at 20 ℃: dichloromethane 600g/L, cyclohexanone 380g/L, toluene 320g/L, acetone 280g/L, xylene 210g/L, hexane 8g/L, water 0.05mg/L. Stable to light. |
1-tert-butyl-3-(2,6-di-isopropyl-4-phenoxyphenyl)thiourea - Risk and Safety
| Hazard Symbols | Xn - Harmful |
| Risk Codes | 20 - Harmful by inhalation |
| Safety Description | 22 - Do not breathe dust. |
| UN IDs | UN 2811 |
| WGK Germany | 2 |
| RTECS | XN9100000 |
| HS Code | 29309090 |
| Hazard Class | 6.1(a) |
| Packing Group | II |
| Toxicity | LD50 in rats (mg/kg): 2068 orally; >2000 dermally; LC50 (14 hr) in rats: 558 mg/m3 by inhalation (Streibert, 1988) |
1-tert-butyl-3-(2,6-di-isopropyl-4-phenoxyphenyl)thiourea - Reference Information
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| toxicity | rat acute oral LD50 was 2068mg/kg; Rat acute percutaneous LD50>2000mg/kg; the LC50 of acute inhalation in rats was 0.558mg/L (14h). No irritation to the skin and eyes. Rats fed for 3 months Test No effect dose of 4 mg/kg per day. No teratogenic, carcinogenic or mutagenic effects were observed in animal experiments. Carp lc500.0038 mg/L(96H), blue gill fish 0.0013mg/L, Daphnia <0.5mg/L (48h). Quail and wild duck acute oral LD50 1500mg/kg, toxic to bees. |
| biological activity | Diafenthiuron is a thiourea compound, a commonly used pesticide. Diafenthiuron can inhibit the mitochondrial function of pests. |
| Use | thiourea insecticide and acaricide. Mainly used for cotton, fruit trees, vegetables, ornamental plants, soybeans and other crops against a variety of mites, whitefly, diamondback moth, cabbage, aphids, leaf hopper, leaf moth, insect pests, mites. The recommended dosage is 0.75-100 m2 G of active ingredient/, and the sustained-effect period is 21 days. The drug is safe for natural enemies. for the control of citrus trees, apple trees, red spiders, cruciferous vegetables of the diamondback moth and other pests |
| production method | preparation of 4-phenoxy-2, 6-diisopropylaniline 4-phenoxy-2, preparation of 6-diisopropylphenylthioisocyanate synthesis of acaricide |
| category | pesticide |
| toxicity grade | poisoning |
| Acute toxicity | oral-rat LD50: 2068 mg/kg; Inhalation-rat LC50: 558 mg/m3/14 h |
| flammability hazard characteristics | thermal decomposition of toxic nitrogen oxides, sulfur oxide smoke |
| storage and transportation characteristics | warehouse ventilation and low temperature drying |
| fire extinguishing agent | water, dry powder, dry sand, carbon dioxide, foam |
Last Update：2024-04-09 02:00:12
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