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  • Trimethylchlorosilane (TMCS)  CAS :75-77-4

    Trimethylchlorosilane (TMCS) CAS :75-77-4

    Name: Chlorotrimethylsilane CAS number: 75-77-4 Molecular formula: C3H9ClSi Molecular weight: 108.64 EINECS number: 200-900-5 Mol file: 75-77-4.mol

  • Trimethylethoxysilane CAS :1825-62-3

    Trimethylethoxysilane CAS :1825-62-3

    Name: Ethoxytrimethylsilane CAS number: 1825-62-3 Molecular formula: C5H14OSi Molecular weight: 118.25 EINECS number: 217-370-6 Mol file: 1825-62-3.mol

  • Dimethyldimethoxysilane CAS1112-39-6 DMDMS

    Dimethyldimethoxysilane CAS1112-39-6 DMDMS

    Specification English name: Dimethyldimethoxysilane CAS number: 1112-39-6 Molecular formula: C4H12O2Si Molecular weight: 120.22 EINECS number: 214 189 4 Mol file: 1112-39-6.mol Applications As a structural control agent, chain extender, and filler treatment agent, it is widely used in the treatment of organic silica gel and white carbon black Purpose As a structural control agent, chain extender, and filler treatment agent, it is widely used in the treatment of organic silica gel and white carbon black. This product is used as a structural control agent and chain extender to improve mechanical processing performance, extend the storage time of rubber blends, and can replace hydroxyl silicone oil for use. Widely used in the treatment of organic silicone and white carbon black Purpose Dimethyldimethoxysilane is used as a structural control agent and chain extender to improve mechanical processing performance, extend the storage time of rubber blends, and can replace hydroxy silicone oil....

  • Iodotrimethylsilane CAS:16029-98-4 (TMIS)

    Iodotrimethylsilane CAS:16029-98-4 (TMIS)

    Properties of trimethyliodosilane Melting point<0 ° C Boiling point 106 ° C (lit.) Density 1.406 g/mL at 25 ° C (lit.) Refractive index n20/D 1.471 (lit.) Flash point − 25 ° F Storage conditions -20 ° C Solubility Reacts Form Liquid Specific gravity 1.47 Clear colors to reddish Water solubility reactions Sensitivity: Moisture&Light Sensitivity Hydrolysis sensitivity 8: Reacts quickly with moisture, water, protoc solvents BRN 1731136 Stability Sensitivity (Reactive) InchiKey CSRZQMIRAZTJOY-UHFFFFAOYSA-N CAS Database 16029-98-4 (CAS DataBase Reference) NIST Chemical Information Iodotrimethylsilane (16029-98-4) EPA Chemical Information Silane, iodotrimethyl - (16029-98-4)

  • Hexamethyldisilane CAS:1450-14-2 (HMD)

    Hexamethyldisilane CAS:1450-14-2 (HMD)

    Properties of Hexamethyldisilane Melting point 9-12 ° C (lit.) Boiling point 112-114 ° C (lit.) Density 0.715 g/mL at 25 ° C (lit.) Refractive index n20/D 1.422 (lit.) Flash point 29 ° F Storage conditions Store at<=20 ° C Sol common organic solvents; Insul H2O Form liquid Specific gravity 0.729 Colorless Insoluble in water Double in alcohol, ether and acetone Hydrolysis sensitivity 1: no significant reaction with acute systems BRN 1633463 Stability InchiKey NEXSMEBSBIABKL-UHFFFAOYSA-N CAS Database 1450-14-2 (CAS DataBase Reference) NIST Chemical Substance Information Disilane, hexagonal - (1450-14-2) EPA Chemical Substance Information Disilane, hexagonal - (1450-14-2)

  • Hexamethyldisiloxane CAS:107-46-0

    Hexamethyldisiloxane CAS:107-46-0

    Introduction:  Hexamethyldisiloxane (silicone ether, MM sealing agent) is a colorless and transparent liquid that is prone to deliquescence. Insoluble in water, soluble in various organic solvents. Used as silicone oil, silicone rubber, pharmaceuticals, gas chromatography stationary liquids, analytical reagents, hydrophobic agents, etc. Obtained by hydrolysis of trimethylchlorosilane.  The physical properties of hexamethyldisiloxane  colorless and transparent liquids. Easily deliquescent, flammable, and in contact with high heat, open flames, and strong oxidizing agents, there is a risk of combustion. Boiling point 99.5 ℃. Flash point -1.1 ℃. Relative density (d2525) 0.7606. The refractive index is 1.3750. Insoluble in water, soluble in various organic solvents.  Hexamethyldisiloxane is an important primary organic silicon raw material, often used as a capping agent in the production of silicone oil, or as a cleaning agent for silicone rubber, pharmaceuticals, gas c...

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Anhui Techchem Industrial Co.,Ltd. will participate in the Shanghai CPHI China 2026 exhibition.

Anhui Techchem Industrial Co.,Ltd. will participate in the Shanghai CPHI China 2026 exhibition.

Anhui Techchem Industrial Co.,Ltd. will participate in the Shanghai CPHI China 2026 exhibition. The 24th CPHI China 2026 will grandly kick off at the Shanghai New International Expo Center from June 1...

Insecticide! Insecticides should be chosen this way?
2022-02-10
The use of insecticides can only exert its insecticidal effect after it enters the body of the pest and reaches the action site of the insecticide. The selection of pesticides needs to be "appropriate for the insects", so a comprehensive understanding of the characteristics and living habits of the pests, and mastering the knowledge of the use of pesticides, can only use the correct pesticides for the pests in the process of chemical control.

1. Select pesticides according to the characteristics of pest mouthparts

Nine orders of insects in agricultural production are the main agricultural pests, they are Coleoptera (beetles), Lepidoptera (moths and butterflies), Orthoptera (locusts, crickets, mole crickets), Hymenoptera (saw bees) , Stem wasps), Isoptera (termites), Thysoptera (thrips), Diptera (flies and mosquitoes), Hemiptera (bugs), Homoptera (cicadas, lice, scales, aphids) ). However, most insecticides can enter the body of the insect through the insect mouthparts, and then reach the target of the nervous system to exert its insecticidal effect. Therefore, understanding the mouthparts of pests is crucial to our selection of pesticide formulations to ensure insecticidal efficacy. According to the feeding characteristics of pests, they can be classified according to the characteristics of mouthparts.


1. Chewing pests: When these pests damage crops, they must feed on plant leaves or other tissues, causing damage to leaves such as nicks. The main pests are Lepidoptera larvae (such as leaf rollers, noctuid larvae, citrus swallowtail, etc.), Coleoptera pests (beetles), Orthoptera nymphs and adults (locusts, crickets, mole crickets), membranes Pteran larvae and adults, insecticides with strong stomach toxicity have the most significant control effects on these pests, and insecticides with good systemic properties but poor contact and stomach toxicity are ineffective against these pests. To control these pests, pesticides with good stomach toxicity can be selected. Such as the most commonly used organophosphorus insecticides, some carbamate insecticides with stomach toxicity, pyrethroid insecticides, nematoxin insecticides, benzoyl urea insecticides, Some insect hormone insecticides, abamectin insecticides.


2. Suction-sucking pests: These pests need to suck the tender tissues of plants through insect mouthparts, and the main pests that suck the sap from the tissues are aphids, leafhoppers, stink bugs, scale insect nymphs, and mosquito adults. , thrips, etc. These pests should choose insecticides with good systemic or intraosmotic properties and good stomach toxicity. Such insecticides include: organophosphorus insecticides, carbamate insecticides, necrotoxin insecticides, and nicotinic insecticides.
 
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