Chlorodimethyloctadecylsilane

Synonym(s):Dimethyloctadecylchlorosilane;Dimethyl-octadecylchlorosilane;Octadecyldimethylchlorosilane;Silane ODM-Tol Sol

white to off-white crystalline powder or

Chlorodimethyl-n-octadecylsilane is used for preparation of hydrophobic surfaces and chain terminator.

Silylating reagent

Not classified

Octadecyldimethylchlorosilane is prepared by reacting 1-Octadecene with Chlorodimethylsilane heated at 65℃.

Melting point:	28-31 °C
Boiling point:	145-155 °C0.005 mm Hg(lit.)
Density	0.86 g/mL at 20 °C(lit.)
vapor pressure	0-4220000Pa at 20-25℃
refractive index	1.4530
Flash point:	>230 °F
form	Solid
color	White
Specific Gravity	0.854
Water Solubility	Reacts with water.
Sensitive	Moisture Sensitive
Hydrolytic Sensitivity	8: reacts rapidly with moisture, water, protic solvents
BRN	2246012
CAS DataBase Reference	18643-08-8(CAS DataBase Reference)
EPA Substance Registry System	Silane, chlorodimethyloctadecyl- (18643-08-8)

Signal word	Danger
Pictogram(s)	Corrosion Corrosives GHS05 Exclamation Mark Irritant GHS07
GHS Hazard Statements	H314:Skin corrosion/irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation
Precautionary Statement Codes	P260:Do not breathe dust/fume/gas/mist/vapours/spray. P271:Use only outdoors or in a well-ventilated area. P280:Wear protective gloves/protective clothing/eye protection/face protection. P301+P330+P331:IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.