This chemical is called Chloro(dimethyl)octadecylsilane, and it can also be named as octadecyldimethylchlorosilane. With the molecular formula of C₂₀H₄₃ClSi, its molecular weight is 347.09. The CAS registry number of this chemical is 18643-08-8, and its product categories are Monochlorosilanes; Si (Classes of Silicon Compounds); Si-Cl Compounds. In addition, this chemical is white to off-white crystalline powder.

Other characteristics of the Chloro(dimethyl)octadecylsilane can be summarised as followings: (1)ACD/LogP: 11.21; (2)# of Rule of 5 Violations: 1; (3)ACD/LogD (pH 5.5): 11.21; (4)ACD/LogD (pH 7.4): 11.21; (5)ACD/BCF (pH 5.5): 1000000; (6)ACD/BCF (pH 7.4): 1000000; (7)ACD/KOC (pH 5.5): 10000000; (8)ACD/KOC (pH 7.4): 10000000; (9)#H bond acceptors: 0; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 17; (12)Polar Surface Area: 0 Å²; (13)Index of Refraction: 1.446; (14)Molar Refractivity: 108.27 cm³; (15)Molar Volume: 405.7 cm³; (16)Polarizability: 42.92×10^-24cm³; (17)Surface Tension: 27 dyne/cm; (18)Density: 0.855 g/cm³; (19)Flash Point: 209.6 °C; (20)Enthalpy of Vaporization: 62.07 kJ/mol; (21)Boiling Point: 395.7 °C at 760 mmHg; (22)Vapour Pressure: 4.1E-06 mmHg at 25°C.

When you are using this chemical, please be cautious about it as the following: This chemical is highly flammable, keep away from the fire. It 's harmful by inhalation and it causes burns easily, so wear suitable protective clothing, gloves and eye/face protection when you use it. The vapours of this chemical may cause drowsiness and dizziness. There is serious damage to health by prolonged exposure, and it has risk of harm to unborn child. In case of contacting with eyes, rinse immediately with plenty of water and seek medical advice. If swallowed, do not induce vomitting; seek medical advice immediately and show this container or label.

You can still convert the following datas into molecular structure: 
1.SMILES: Cl[Si](CCCCCCCCCCCCCCCCCC)(C)C
2.InChI: InChI=1/C20H43ClSi/c1-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19-20-22(2,3)21/h4-20H2,1-3H3
3.InChIKey: GZGREZWGCWVAEE-UHFFFAOYAL