The Octadecyl isothiocyanate, with the CAS registry number 2877-26-1 and EINECS registry number 220-722-1, has the systematic name of 1-isothiocyanatooctadecane. It is a kind of white to beige crystalline low melting solid, and the molecular formula is C₁₉H₃₇NS.

The characteristics of this chemical are as followings: (1)ACD/LogP: 9.97; (2)# of Rule of 5 Violations: 1; (3)ACD/LogD (pH 5.5): 9.97; (4)ACD/LogD (pH 7.4): 9.97; (5)ACD/BCF (pH 5.5): 1000000; (6)ACD/BCF (pH 7.4): 1000000; (7)ACD/KOC (pH 5.5): 6332145; (8)ACD/KOC (pH 7.4): 6332145; (9)#H bond acceptors: 1; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 17; (12)Polar Surface Area: 44.45 Å²; (13)Index of Refraction: 1.483; (14)Molar Refractivity: 100.3 cm³; (15)Molar Volume: 351 cm³; (16)Polarizability: 39.76×10^-24cm³; (17)Surface Tension: 31.1 dyne/cm; (18)Density: 0.88 g/cm³; (19)Flash Point: 188.8 °C; (20)Enthalpy of Vaporization: 59.29 kJ/mol; (21)Boiling Point: 370.3 °C at 760 mmHg; (22)Vapour Pressure: 2.38E-05 mmHg at 25°C.

You should be cautious while dealing with this chemical. The chemical is harmful by inhalation, in contact with skin and if swallowed. Therefore, you had better take the following instructions: Wear suitable protective clothing and eye/face protection, and if in case of contacting with eyes, rinse immediately with plenty of water and seek medical advice.
 
Addtionally, the following datas could be converted into the molecular structure:
(1)SMILES: S=C=N/CCCCCCCCCCCCCCCCCC
(2)InChI: InChI=1/C19H37NS/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-20-19-21/h2-18H2,1H3
(3)InChIKey: VJIRSSFEIRFISD-UHFFFAOYAQ