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Chinese namebutadiene rubberChinese synonym butadiene rubberEnglish titleButadiene rubberMolecular weightzeroButadiene rubber is presently the 2d greatest rubber species in the world after styrene butadiene rubber. The distinction in microstructure of butadiene rubber on the whole relies upon on the catalyst, polymerization solvent, and polymerization response Chemicalbook temperature.
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Polyisoprene rubber (IR) is a artificial rubber compound organized through answer polymerization of isoprene monomers underneath the motion of a catalyst. It has a chemical composition, three-d structure, and mechanical residences comparable to herbal rubber, as properly as true uncooked fabric strength, simple viscosity, getting older performance, and rebound performance.
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Ethyl acetate is a broadly used satisfactory chemical product with incredible solubility, fast drying, and a large vary of uses. It is a very essential natural chemical uncooked cloth and tremendous industrial solvent, and is extensively used in the manufacturing procedure of acetate fiber, ethyl fiber, chlorinated rubber, ethylene resin, acetate fiber resin, artificial rubber, coatings, and paints.
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Main purposeEthylene glycol dimethyl acrylate is frequently used in the plastic and rubber industries as a crosslinking agent for ethylene acrylic copolymers, ABS, acrylic sheets, pipes, glass fiber bolstered polyester, PVC, ion trade resins, smokeless powder encapsulation polymerization, glazing, etc. is additionally used as a polymer in copolymerization, which will increase hardness, warmness resistance, climate resistance, solvent resistance, and friction resistance.
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The conductivity of carbon black is carefully associated to its shape (especially graphite microcrystalline structure), floor properties, and particle size. The conductive mechanism of carbon black in rubber often consists of conductive channel and Field electron emission mechanism. The conductive channel mechanism is that carbon black aggregates come into contact with every different in the adhesive to structure a community like channel and behavior electricity.
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1. Used for ester trade reactions.2. Use as an additive and intermediate in chemical products.3. Use: It is used to put together adhesive and as catalyst for transesterification and polymerization reaction.4. Use It is used to make adhesives between metallic and rubber, metallic and plastic, as nicely as catalyst for transesterification and polymerization, and uncooked substances for pharmaceutical industry.5. Catalysts used for esterification reactions, ester to ester conversion reactions of esters such as acrylic acid.
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melting point86-88 °C(lit.)Storage conditions2-8°CformPowdercolourWhite to off-whitepH value4.0 to 6.5(50g/L, 25 ℃)SOLUBLEsolubleCAS NO1670-14-0Molecular formulaC7H9ClN2molecular weight156.61EINECS number216-795-4
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nameTofacitinibCAS NO477600-75-2Molecular formulaC16H20N6Omolecular weight312.38density1.3Storage conditions-20°CsolubilitySoluble in DMSO (up to 100 mg/ml) or in Ethanol (up to 100 mg/ml).formPale powder.Acidity coefficient (pKa)6.04±0.60(Predicted)colourOff-white
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nameUlipristal AcetateCAS NO126784-99-4Molecular formulaC30H37NO4molecular weight475.62melting point183-185 ºCboiling point640.1±55.0 °C(Predicted)density1.19Storage conditions-20°Cformpowdercolourwhite to beige
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Appearance white block or powderAsh content/% ≤ 0.01 0.01 0.01 0.01The softening factor is 83~143 ℃. Soluble in acetone, toluene, cyclohexane, ethyl acetate, tetrahydrofuran, dichloromethane, etc., insoluble in solvent gas and water
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Polyvinyl alcohol resin (PVA) aqueous answer has awesome moldability and emulsifying properties, forming a movie with amazing adhesion, solvent resistance, friction resistance, tensile strength, and oxygenbarrier properties.Solubility: Soluble in water, typically heated to 65-75 ℃ for whole dissolution. Insoluble in gasoline, kerosene, vegetable oil, benzene, toluene, dichloroethane, carbon tetrachloride, acetone, ethyl acetate, methanol, ethylene glycol, etc. Slightly soluble in dimethyl sulfoxide.
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CAS NO104-47-2Molecular formulaC9H9NOmolecular weight147.17melting point8 °Cboiling point286-287 °Cdensity1.085 g/mL at 25 °CStorage conditionsSealed in dry,Room TemperatureformLiquidcolourClear colorless to slightly yellowpH value4.5 (100g/l, H2O, 20℃)suspension
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namePramoxine hydrochlorideCAS NO637-58-1Molecular formulaC17H28ClNO3molecular weight329.86melting point181-183°Storage conditionsInert atmosphere,Room TemperaturesolubilityChloroform (Slightly), Methanol (Slightly)formneatcolourWhite to Off-White
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nameEntrectinibCAS NO1108743-60-7Molecular formulaC31H34F2N6O2molecular weight560.64boiling point717.5±60.0 °C(Predicted)density1.340±0.06 g/cm3(Predicted)Storage conditionsStore at -20°Csolubilityinsoluble in H2OAcidity coefficient (pKa)12.01±0.43(Predicted)formsolid
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Chemical factor structure mannequin of petroleum resin:The most commonly used petroleum resin manufacturing applications are C9 petroleum resin and C5 petroleum resin.C9 petroleum resinC9 petroleum resin mainly refers to a resinous substance formed via polymerization of olefins or cyclic olefins containing nine carbon atoms or copolymerization with aldehydes, fragrant hydrocarbons, terpene compounds, etc.C9 petroleum resin, also acknowledged as aromatic petroleum resin, can be divided into sorts such as hot polymer
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Bisphenol A polyoxyethylene ether is a chemical with the chemical system C15H16O2. (C2H4O) n.Boiling point350 ℃ [at one hundred and one 325 Pa]Density1.18 g/mL at 25 ° CVapor pressure0Pa at 25 ℃Refractive indexn20/D 1.552Flash point230 ° FWater solubility697mg/L at 20 ℃
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Isooctyl salicylate (also regarded as 2-ethylamyl salicylate) is an necessary chemical product. Its look is colorless to faded yellow obvious liquid with a barely aromatic smell. It absorbs UVB (out of doors ultraviolet mild in Chinese) and is broadly used in perfume, soap, sunscreen cosmetics, and medicinal drug industries. It can additionally be used as an natural solvent and natural synthesis intermediate.
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Polyvinylpyrrolidone, additionally recognised as PVP, is a polymer of ethylene pyrrolidone. Due to its one-of-a-kind ranges of polymerization, it can be divided into soluble PVP and insoluble PVPP (polyvinylpyrrolidone). The relative molecular weight of soluble PVP is 8000~10000, which can be used as a precipitant to precipitate with the aid of reacting with polyphenols. By the use of this method, there are without problems residual PVP in the wine.
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nameMebendazoleCAS NO31431-39-7Molecular formulaC16H13N3O3molecular weight295.29melting point288.5°Cboiling point436.98°Cdensity1.1952Storage conditionsSealed in dry,2-8°CformneatcolourWhite to Pale Beige
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nameFlorfenicolCAS NO73231-34-2Molecular formulaC12H14Cl2FNO4Smolecular weight358.21melting point153 °CSpecific Rotation26 +17.9° (DMF)boiling point618℃Storage conditionsInert atmosphere,2-8°CformsolidcolourWhite to Off-White
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English nameAmmonium Zirconium HexafluorideCAS16919-31-6Molecular formula(NH4)2.ZrF6Molecular weight241.29Density1.15g/mLat 25°C(lit.)Water-solubility287.7g/L at 20℃Storage conditionsRoom TempratureAppearanceWhite crystalsmolecular structure:
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CAS NO492-37-5Boiling point260-262 °CDensity1.1 g/mL at 25 °Cflash point>230 °FStorage conditionsSealed in dry,Room TemperatureFormLiquidColourClear pale yellow to yellowpH value3 (5g/l, H2O, 20℃)SOLUBLE10 g/L (20 ºC)Molecular formulaC9H10O2
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Melting point144-146 °CBoiling point353 °CDensity1,45 g/cm3Refractivity1.5555 (estimate)Flash point352-354°CStorage conditionsSealed in dry,Room TemperatureSolubilitySoluble in hot acetone.Formpowder to crystalColourWhite to Light yellowCAS90-98-2
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Melting point: 165-185 ℃Density: 1.08g/cm3Refractive index: 1.488 (20 ℃)Water absorption rate: no longer extra than 0.4%Softening temperature: 60-65 ℃Glass transition temperature: 66-84 ℃ (varies relying on diploma of polymerization)Solubility: Soluble in most natural solvents such as alcohols/ketones/ethers/esters, insoluble in carbon hydrocarbon solvents [2]Application Editing1.
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