Dodecyltrichlorosilane 4484-72-4

Trichlorododecylsilane

Silane,trichlorododecyl-;Trichlorododecylsilane;Dodecyltrichlorosilane;NSC 139836

4484-72-4

C12H25Cl3Si

InChIKey=BNCXNUWGWUZTCN-UHFFFAOYSA-N

303.77

303.77

1758004

224-769-9

08JI131K64

139836

1771

Colorless to yellow liquid

2931900090

Bulk Drug Intermediates

0

10.04

Dodecyltrichlorosilane is a colorless to yellow liquid with a pungent odor. It will burn though it may take some effort to ignite. It is decomposed by moisture or water to hydrochloric acid with evolution of heat. It is corrosive to metals and tissue.

1.026 g/cm³ @ Temp: 25 °C

-30 °C

288 °C

>230 °F

1.458

soluble in parts of organic solvents.

All containers, pipes, apparatus, installations, and structures used for manufacture, storage, transport, or use of these substances must be of material resistant to corrosive substances or be protected by suitable coatings All containers or receptacles should be clearly labelled to indicate their contents and should bear the danger symbol for corrosives. /Corrosive substances/

Flammable; emits toxic hydrogen chloride gas in water; emits toxic gas in fire

Lower explosive limit: 3.4%; Upper explosive limit: > or = 9.5%

SHARP ODOR, LIKE HYDROCHLORIC ACID; PUNGENT

Readily hydrolyzed with liberation of hydrogen chloride|The reaction of organosilanes with halogens and halogen cmpd usually proceeds in good yield through cleavage of the Si--H bond and formation of the silicon-halogen bond. Reaction with fluorine, however, does not proceed satisfactorily because of cleavage of not only the Si--H but also C--Si and C--H bonds. Direct halogenation with chlorination, bromine, and iodine proceeds smoothly, however. /Organosilanes/

Reacts violently with water, steam, moist air, alcohols, acetone, light metals with generation of heat and combustible (H2) and corrosive (HCl) gases. on contact with moist air it gives off HCl gas. REF [Handling Chemicals Safely, 1980 p. 924]. Dodecyltrichlorosilane reacts vigorously with water to generate gaseous HCl. Based on a scenario where the chemical is spilled into an excess of water (at least 5 fold excess of water), half of the maximum theoretical yield of Hydrogen Chloride gas will be created in 1.1 minutes. After mixing particular chemicals into water, there may be a delay of <1-10 minutes before gas generation may be observed. For this chemical, a 23 second induction time was observed. Experimental details are in the following: "Development of the Table of Initial Isolation and Protective Distances for the 2008 Emergency Response Guidebook", ANL/DIS-09-2, D.F. Brown, H.M. Hartmann, W.A. Freeman, and W.D. Haney, Argonne National Laboratory, Argonne, Illinois, June 2009.

Chlorosilanes

Water-Reactive

Chlorosilanes, such as DODECYLTRICHLOROSILANE, are compounds in which silicon is bonded to from one to four chlorine atoms with other bonds to hydrogen and/or alkyl groups. Chlorosilanes react with water, moist air, or steam to produce heat and toxic, corrosive fumes of hydrogen chloride. They may also produce flammable gaseous H2. They can serve as chlorination agents. Chlorosilanes react vigorously with both organic and inorganic acids and with bases to generate toxic or flammable gases.

-11,000 BTU/LB = -6,200 CAL/G = -260X10+5 JOULES/KG (EST)

Corrosive