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Pentamethyldisiloxane is used in the synthesis of siloxane-polyether copolymer surfactants. It is also used as source of trimethylsilyl functional group in organic synthesis.
Tao Pei.; Ross A. Widenhoefer. Use of Pentamethyldisiloxane in the Palladium-Catalyzed Cyclization/Hydrosilylation of Functionalized Dienes. Org. Lett. 2000, 2 (10), 1469-1471.
Carles, S.; Le Garrec, J. L.; Mitchell, J. B. Electron and ion reactions with hexamethyldisiloxane and pentamethyldisiloxane. The Journal of chemical physics. 2007, 127 (4), 144308-144308.
Hazard Statements: H225
Highly flammable liquid and vapour.
Precautionary Statements: P210-P280a-P240-P241-P303+P361+P353-P501a
Keep away from heat/sparks/open flames/hot surfaces. - No smoking. Wear protective gloves and eye/face protection. Ground/bond container and receiving equipment. Use explosion-proof electrical/ventilating/lighting/ equipment. IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. Dispose of contents/container in accordance with local/regional/national/international regulations.