Methyltrichlorosilane--CYC

Trichloromethylsilane

Silane,trichloromethyl-;Trichloromethylsilane;Methyltrichlorosilane;Methylsilyl trichloride;Trichloromethylsilicon;Methylsilicon trichloride;TSL 8003;LS 40;LS 40 (silane);KA 13;NSC 77069;A 154;A 154 (silane);175446-71-6

75-79-6

CH3Cl3Si

InChIKey=JLUFWMXJHAVVNN-UHFFFAOYSA-N

149.48

149.48

1361381

200-902-6

UIR5I18638

0301

77069

1250

DTXSID4026426

COLORLESS LIQUID

29310095

Silane Reagent

0

4.19

colorless liquid

1.27 g/cm³ @ Temp: 25 °C

-90 °C

66.4 °C

5 °F

1.434

Solubility in water: reaction

Flammables area

150 mm Hg ( 25 °C)

5.2 (vs air)

Oral-rat LD50: 1000 mg/kg; inhalation-mouse LC50: 2572 mg/m3/2 hours

In case of open flame, strong oxidant is combustible; in case of high temperature or water decomposes toxic gas hydrogen chloride

5.5-10.4%(V)

ACRID ODOR, SHARP LIKE HYDROCHLORIC ACID

Organo-functional silanes are noted for their ability to bond organic polymer systems to inorganic substrates. /Silane cmpd/|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/|Hydroxyl radical reaction rate constant = 1.50X10-13 cu cm/molec sec at 25 °C (est)

Highly flammable. Fumes in air. 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 air it gives off HCl gas. [Handling Chemicals Safely 1980. p. 924]. Methyltrichlorosilane 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 1.4 minutes. 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

Highly Flammable

Chlorosilanes, such as METHYLTRICHLOROSILANE, 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.

greater than 760 °F (USCG, 1999)|>760 °F (>404 °C)|490 °C

-3,000 BTU/LB (EST)

Lower flammable limit: 7.6% by volume; Upper flammable limit: 11.9% by volume

The vapour is heavier than air and may travel along the ground; distant ignition possible.

89.3 BTU/LB