The 3-Mercaptopropyltriethoxysilane is an organic compound with the formula C₉H₂₂O₃SSi. The IUPAC name of this chemical is 3-triethoxysilylpropane-1-thiol. With the CAS registry number 14814-09-6, it is also named as 1-Propanethiol, 3-(triethoxysilyl)-. The product's categories are Industrial/Fine Chemicals; Mercapto; Chloroalkylsilanes, etc. (Silane Coupling Agents); Functional Materials; Si (Classes of Silicon Compounds); Silane Coupling Agents; Si-O Compounds; Trialkoxysilanes; Adhesion Promoters; Coupling Agents; Mecapto Silanes; Surface Modifiers. Besides, it is a clear to straw liquid with unpleasant odor of sulfide, which should be stored in a closed and dark place. It is commonly used as active agent, coupling agent, crosslinking agent, reinforcing agent and so on.

Physical properties about 3-Mercaptopropyltriethoxysilane are: (1)ACD/LogP: 2.68; (2)ACD/LogD (pH 5.5): 2.68; (3)ACD/LogD (pH 7.4): 2.68; (4)ACD/BCF (pH 5.5): 64.39; (5)ACD/BCF (pH 7.4): 64.34; (6)ACD/KOC (pH 5.5): 686.1; (7)ACD/KOC (pH 7.4): 685.51; (8)#H bond acceptors: 3 ; (9)#Freely Rotating Bonds: 10; (10)Polar Surface Area: 52.99 Å²; (11)Index of Refraction: 1.446; (12)Molar Refractivity: 65.59 cm³; (13)Molar Volume: 245.9 cm³; (14)Polarizability: 26×10^-24cm³; (15)Surface Tension: 26.9 dyne/cm; (16)Density: 0.969 g/cm³; (17)Flash Point: 100.3 °C; (18)Enthalpy of Vaporization: 45.98 kJ/mol; (19)Boiling Point: 242.2 °C at 760 mmHg; (20)Vapour Pressure: 0.0535 mmHg at 25°C.

Preparation: this chemical can be prepared by thiourea salt and ammonia. Reaction equation is as follows:

Uses of 3-Mercaptopropyltriethoxysilane: it can be used to produce 3-{[3-(1,1,1-Triethoxysilyl)propyl]sulfanyl}propanenitrile at temperature of 0 °C. It will need reagent C₂H₅ONa with reaction time of 1 hour. The yield is about 70%.

When you are using this chemical, please be cautious about it as the following:
This chemical is irritating to eyes, respiratory system and skin. When you are using it, wear suitable protective clothing. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.

You can still convert the following datas into molecular structure:
(1)SMILES: O(CC)[Si](OCC)(OCC)CCCS
(2)InChI: InChI=1/C9H22O3SSi/c1-4-10-14(11-5-2,12-6-3)9-7-8-13/h13H,4-9H2,1-3H3
(3)InChIKey: DCQBZYNUSLHVJC-UHFFFAOYAR
(4)Std. InChI: InChI=1S/C9H22O3SSi/c1-4-10-14(11-5-2,12-6-3)9-7-8-13/h13H,4-9H2,1-3H3
(5)Std. InChIKey: DCQBZYNUSLHVJC-UHFFFAOYSA-N

The toxicity data is as follows: