Page Views: 138 Date Added: 08/03/2011 Last Updated: 02/14/2012 Expiry Date: 07/31/2021 Product/Service Details Properties Approximate general chemical structure(CH3)3 SiO[SiH(CH3)O]x Si(CH3)3 with x is approx. 45 - 90 and the molecular weight is 60.1. Storage Poly (methyl hydrosiloxane) has a shelf life of at least12 months when stored at 25 °C in the tightly closed original container. The 'Best use before end' date of each batch appears on the product label. Storage beyond the date specified on the label does not necessarily mean that the product is no longer usable. In this case however, the properties required for the intended use must be checked for quality assurance Reasons. Safety properties Thermal stability On heating for a short time in the absence of moisture,decomposition only occurs above 300 °C. In the presence of moisture, decomposition occurs at much lower temperatures together with the release of hydrogen, a viscosity increase and gelation, especially with thin films. In the presence of certain catalysts H-siloxane may depolymerise with formation of volatile hydrogencontaining cyclic siloxanes. Solubility, reactivity and hazards Can be mixed with many organic solvents of low or average polarity. Can react with water, alcohols and proton active reagents of similar strength in the presence of suitable catalysts (acids, amines, metals,metallic salts) with hydrogen being released. Particularly strong reactions can take place if only traces of alkalinematerial are present in a homogeneous mixture. Direct contact of H-siloxane with alkalis must be avoided, as well as the influence of strong oxidizing agents. Ignition temperature In our experience, the self-ignition temperature of H-siloxane is above 240 °C in the absence of reactive materials. Contact with porous or fibrous surfaces, eg, asbestos or asbestos substitutes, reduces the ignition temperature considerably. Foamy, resinous reaction products resulting from partial decomposition can also reduce the ignition temperature. Safety precautions In the event that H-siloxane splashes onto or is soaked up by the insulating material, the insulating material must be changed immediately. Please see our safety data sheet. Product data 1、Appearance：colourless, clearliquid; mild odour 2、Volatility(5g substance, 1 hour at 150 °C, cylindrical crucible, 30 mm diameter, 40 mm high)：less than 1.5% residue remains liquid 3、Density at 25 °C：approx. 1 4、Refractive index at 25 °C：approx. 1.39 5、Viscosity at 25 °C：approx. 15-25[mm²/s] 6、Hydrolysable chlorine (as HCI)： max.5[mg/kg] 7、Hydrogen content (released by alkali)：1.55-1.6% 8、Silicone content：99.5% These figures are intended as a guide and should not be used in preparing specifications. Safety information Detailed safety information is contained in each material data safety sheet, which can be obtained from our sales offices

Company Information (shanghai qunyue chemical co.,ltd)

Company Profile: History QunYue Chemicals established at shanghai 2005. We are a professional Chemical company which mainly engaged in R&D, manufacture and I&E trade. Company's headquarter is located in Shanghai,in order for convenient contact for business, our company has set up the warehouse and branch in ningbo,guangzhou,nanjing,chengdu. Objectives It is the policy of QueYue Chemicals to provide a superior standard of service to our customers. As QueYue Chemicals begins a new plan start our oversea sales. In line with the global expansion target of the Group, International Business Department was set up in 2011, and we dedicate ourselves to exploiting overseas markets so as to provide our high-performance, and high-quality products to the world. Service QunYue Chemicals based in China, is committed to provid a both-way, efficient service to world's chemicals manufacturer, importer&exporter, distributor and end user, with a rich experience and broad marketing network, we become well regarded in the industry as a reliable business partner. Technical assistance QunYue Chemicals has built up rich experience in the application areas of the products it supplies. Technical input from QunYue Chemicals into our customers' research and development programs has resulted in new applications for our range of raw material and indeed new products to be marketed by our customers. A big reason increase in our sales is due to new applications being found for existing product lines. Application Range QunYue Chemicals providing range includes products for diverse industrial applications, such as Textiles, Rubber , daily chemical , solar energy ,coating, Pharmaceutical,paper manufacturing and etc.. >> More Website URL: http://www.bridgat.com/u40476