Leaks dichlorosilane

Dichlorosilane has a low-autoignition temperature. Exposure to heat from a fire or from a water-dichlorosilane reaction can cause the product to autoignite. The acidic decomposition products formed by burning dichlorosilane from leaks may rapidly attack the metal at the leak area, especially if the metal is hot. 

Store and use dichlorosilane only in adequately ventilated areas. It should be used only in a closed system constructed with compatible materials and designed to withstand the pressures involved. Keep away from heat and all ignition sources such as flames and sparks since dichlorosilane will form flammable mixtures with air and other oxidizing agents. All lines, connections, equipment, and so forth, must be thoroughly checked for leaks and grounded prior to use. Use only spark-proof tools and explosion-proof equipment. 

Large leaks of dichlorosilane will be evident by the formation of dense white fumes of hydrogen chloride upon contact with moist air. Small leaks may be detected by holding an open bottle of concentrated ammonium hydroxide solution near the site of the suspected leak (dense white fumes will form). Wet blue litmus paper will turn pink when exposed to a dichlorosilane leak. 

A dichlorosilane fire will usually result if a spill contacts water. If flames are extinguished, explosive reignition may occur. Appropriate measures should be taken, for example, total evacuation of the area. Approach the area with extreme caution. Reverse flow into the cylinder may cause it to rupture. Corrosive vapors may be reduced with a coarse water spray. Shut off the leak if without risk. Ventilate the area, and prevent runoff from contaminating the surrounding environment. 

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See also in sourсe #XX -- [ ]

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