helothion
35400-43-2
CAS: 35400-43-2
Molecular Formula: C12H19O2PS3
helothion - Names and Identifiers
helothion - Physico-chemical Properties
| Molecular Formula | C12H19O2PS3 |
| Molar Mass | 322.45 |
| Density | 1.20 g/cm3 |
| Melting Point | -15℃ |
| Boling Point | bp0.1 155-158° |
| Water Solubility | 0.31 mg 1l-1(20 °C) |
| Vapor Presure | 8.4×10-5Pa (20 °C) |
| Appearance | Morphological Liquid |
| Storage Condition | APPROX 4°C |
| Refractive Index | nD20 1.5859 |
| Physical and Chemical Properties | The pure chemical product is a colorless oily liquid. B. p.125 ℃/0.01Pa, relative density 1.20 (20 ℃), vapor pressure 1 × 10-4Pa, refractive index n20D1.5859. Solubility at 20 ℃: toluene 1200g/kg, isopropanol> 400g/kg, cyclohexanone 120g/kg, water 5mg/kg. Stable under general conditions. |
| Use | Uses a broad spectrum of three asymmetric organic phosphate ester insecticides, with contact and stomach toxicity. It is mainly used for p-phenoptera pests in cotton field. In addition, it is effective against a variety of pests, such as the order, Coleoptera and Diptera. In addition to cotton, but also can be used for tomato, corn, tobacco and other crops. The recommended dosage is 7.5~10.5g/100. |
helothion - Risk and Safety
| Risk Codes | R21 - Harmful in contact with skin R23/25 - Toxic by inhalation and if swallowed. R50/53 - Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. |
| Safety Description | 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. |
| UN IDs | 3018 |
| WGK Germany | 3 |
| RTECS | TE4165000 |
| Hazard Class | 6.1(b) |
| Packing Group | III |
| Toxicity | LD50 orally in rats: 227 mg/kg (Bull, Ivie) |
helothion - Nature
| Specific gravity | 1.20 (20℃) |
| Merck | 13,9081 |
| BRN | 1990231 |
| exposure limit | NIOSH PEL: TWA 1 mg/m3; ACGIH TLV: TWA 1 mg/m3. |
| EPA chemical information | Sulprofos (35400-43-2) |
Last Update：2024-04-10 22:29:15
helothion - Uses and synthesis methods
Toxicity
acute oral LD50140mg/kg in male rats, 120 mg/kg in females, 580 mg/kg in male mice and 490 mg/kg in female mice. Acute percutaneous LD50>2000mg/kg in male rats and about 2000mg/kg in female mice. No irritation to the skin. Carp LC505.2mg/L, quail LD5025mg/kg.
production method
Preparation of p-methylthiophenol Water, sodium sulfide, and sulfur are added to the reactor to make an aqueous solution of sodium disulfide. (CH3)2SO4 is added dropwise at 50~60 ℃, after dropping, the CH3SSCH3 and water are steamed out at the same time, and the oil layer is CH3SSCH3. Phenol and CH3SSCH3 are added to the reactor, stirred and cooled, then concentrated sulfuric acid is added dropwise, dripped, layered, neutralized, washed with water, dried, and unreactant is distilled to obtain methylthiophenol.
Synthesis of thiophanate Put the organic solvent and phosphorus pentasulfide into the reactor, add an appropriate amount of catalyst, add a mixture of 4-methylthiophenol sodium salt and organic solvent dropwise at low temperature, and then add a specified amount of the mixture of anhydrous ethanol and bromopropane, and gradually heat up to 70°C. After the reaction is over, solvent extraction, alkali washing, water washing until neutral, anhydrous sodium, the yield was 77.6% and the content reached 82.6%.
Other preparation methods of thiophanate are:
Prepared by the reaction of O-ethyl-O-(4-methylthiophenyl) thiophosphoryl chloride and sodium n-propyl mercaptan;
The intermediate O-p-methylthiophenyl dithiophosphoryl chloride was synthesized from the interaction of phosphorus pentasulfide with hydrogen sulfide and sodium 4-methylthiophenol. This intermediate is then prepared by reacting with ethanol and bromopropane.
Last Update：2024-04-10 22:29:15
helothion - Security information
| toxic substance data | 35400-43-2(Hazardous Substances Data) |
Last Update：2024-04-10 22:29:15
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QQ: 3008007409
Spot supply
Product Name: Sulprofos Request for quotationCAS: 35400-43-2
Tel: 400-968-2212
Email: 3623107365@qq.com
Mobile: 18916960931
QQ: 3623107365
Wechat: 18916960931
Spot supply
Product Name: Sulprofos Visit Supplier Webpage Request for quotationCAS: 35400-43-2
Tel: +86-400-900-4166
Email: product@acmec-e.com
Mobile: +86-18621343501
QQ: 2881950922
Wechat: 18621343501
WhatsApp: +86-18621343501
Multiple Specifications
Product Name: Sulprofos Visit Supplier Webpage Request for quotationCAS: 35400-43-2
Tel: 18301782025
Email: 3008007409@qq.com
Mobile: 18021002903
QQ: 3008007409
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