22248-79-9
Tetrachlorvinphos
CAS: 22248-79-9
Molecular Formula: C10H9Cl4O4P
22248-79-9 - Names and Identifiers
22248-79-9 - Physico-chemical Properties
| Molecular Formula | C10H9Cl4O4P |
| Molar Mass | 365.96 |
| Density | 1.520±0.06 g/cm3(Predicted) |
| Melting Point | 97-98 °C(lit.) |
| Boling Point | 399.5±42.0 °C(Predicted) |
| Water Solubility | 11mg l-1（20°C） |
| Vapor Presure | 6.0×10-6 Pa (20 °C) |
| Appearance | morphological solid |
| Storage Condition | 0-6°C |
| Physical and Chemical Properties | The chemical product is white crystal. M. p. 97~98 ℃, vapor pressure 1.999 × 10-4Pa (25 ℃). Soluble samarium in organic solvent: chloroform 40%, acetone <20%, xylene <15%; Solubility in water is 11mg/L. At 50 ℃, the half-lives of hydrolysis are 1300h (pH 3), 1060h (pH 7) and 80h (pH 10.5). Industrial products are purity 98% cis isomers. |
| Use | Uses can be used to control Lepidoptera and Diptera pests, flies in milk sheds and livestock cages, warehouses, pastures and forest pests, and can also be used as moth control agents |
22248-79-9 - Risk and Safety
| Risk Codes | R21/22 - Harmful in contact with skin and 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 R22 - Harmful if swallowed |
| Safety Description | S36 - Wear suitable protective clothing. 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. S36/37 - Wear suitable protective clothing and gloves. S16 - Keep away from sources of ignition. |
| UN IDs | UN 3077 9/PG 3 |
| RTECS | TB9100000 |
| HS Code | 29199000 |
| Toxicity | LD50 in male, female rats (mg/kg): 1100, 1125 orally (Gaines) |
22248-79-9 - Upstream Downstream Industry
22248-79-9 - Nature
| Merck | 13,9267 |
| NIST chemical information | Tetrachlorvinphos(22248-79-9) |
| (IARC) Carcinogen Classification | 2B (Vol. 30, Sup 7, 112) 2017 |
| EPA chemical information | Tetrachlorvinphos (22248-79-9) |
Last Update：2024-04-10 22:29:15
22248-79-9 - Uses and synthesis methods
Toxicity
acute oral LD50 in rats is 4000~5000 mg/kg; Acute oral LD50 in mice> 5000 mg/kg; Rabbit acute percutaneous LD50>2500 mg/kg. The 2-year feeding test showed that the useless dose for rats was 125mg/kg and 200mg/kg for dogs. The LC50 of carp is 1~4mg/L, and the acute oral LD50 of wild ducks is> 2000mg/kg.
production method
preparation of pentachloroacetophenone trichloroethylene and a small amount of azobisisobutyronitrile (catalyst) were introduced into dry oxygen at 100 ℃, and dichloroacetyl chloride was obtained by reacting at 110 ℃ for 10h under a pressure of 6.5 × 105Pa. Then dichloroacetyl chloride was dropped into 1,2, 4-trichlorobenzene and anhydrous aluminum trichloride slurry, and the temperature was raised to 90 ℃ for 4 hours to prepare pentachlorophenone. The yield can reach 79.87%. n15D1.5854 ~ 1. 5930.
The preparation of trimethyl phosphite The effect of phenol and phosphorus trichloride is easy to obtain a better yield, and the triphenyl phosphite is formed, and then combined with excess anhydrous methanol in the presence of sodium methoxide, In an emulsion reaction tower, the transesterification reaction is carried out at a temperature of 130~150 ℃, the trimethyl ester is taken out from the top of the tower with excess methanol vapor, and then the methanol.
the synthetic pentachlorophenone of insecticidal is put into a reaction pot, trimethyl phosphite is dropped at 30~50 ℃, then heated to 110 ℃, heated for 0.5h, treated with ethanol (or diethyl ether and pentane) to obtain insecticidal, with a yield of 77.13%.
category
Pesticides
Toxicity classification
High toxicity
Acute toxicity
oral-rat LD50: 480 mg/kg; oral-mouse LD50: 1379 mg/kg
flammability hazard characteristics
Open flame is combustible; it decomposes toxic phosphorus oxide and chloride gas when heated
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
occupational standards
STEL 1 mg/m3
Last Update：2024-04-10 22:29:15
22248-79-9 - Security information
| toxic substance data | 22248-79-9(Hazardous Substances Data) |
Last Update：2024-04-10 22:29:15
Supplier List
Multiple Specifications
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Multiple Specifications
Product Name: Tetrachlorvinphos Visit Supplier Webpage Request for quotationCAS: 22248-79-9
Tel: 18301782025
Email: 3008007409@qq.com
Mobile: 18021002903
QQ: 3008007409
Wechat: 18301782025
View History
Raw Materials for 22248-79-9
Methanol
Sodium methoxide
Phosphorus trichloride
Oxygen
2,2'-Azobis(2-methylpropionitrile)
Trichloroethylene
Trimethyl phosphite
1,2,4-Trichlorobenzene
Triphenyl phosphite
2-Chloroacetophenone
PENTACHLOROBENZENE
B-15
Sodium methoxide
Phosphorus trichloride
Oxygen
2,2'-Azobis(2-methylpropionitrile)
Trichloroethylene
Trimethyl phosphite
1,2,4-Trichlorobenzene
Triphenyl phosphite
2-Chloroacetophenone
PENTACHLOROBENZENE
B-15
Downstream Products for 22248-79-9