Dodecyltrimethoxysilane CAS NO.3069-21-4

1. Introduction ofDodecyltrimethoxysilane
Dodecyltrimethoxysilane, is also called silane,dodecyltrimethoxy, dodecyl(trimethoxy)…

1. Introduction of Dodecyltrimethoxysilane
Dodecyltrimethoxysilane, is also called silane,dodecyltrimethoxy, dodecyl(trimethoxy)silane. The molecular formula is C₁₅H₃₄O₃Si and the molecular weight is 290.51. What's more, it is a kind of colorless to yellowish transparent liquid and belongs to the classes of Alkyl; Si (Classes of Silicon Compounds); Si-O Compounds; Trialkoxysilanes; Alkoxy Silanes; Hydrophobing Agents. And it should be stored in a cool and dry place.

2. Properties of Dodecyltrimethoxysilane
(1)ACD/LogP: 5.98; (2)# of Rule of 5 Violations: 1; (3)ACD/LogD (pH 5.5): 5.98; (4)ACD/LogD (pH 7.4): 5.98; (5)ACD/BCF (pH 5.5): 20687.76; (6)ACD/BCF (pH 7.4): 20687.76; (7)ACD/KOC (pH 5.5): 42734.05; (8)ACD/KOC (pH 7.4): 42734.05; (9)#H bond acceptors: 3; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 14; (12)Polar Surface Area: 27.69 Å2; (13)Index of Refraction: 1.429; (14)Molar Refractivity: 85.49 cm³; (15)Molar Volume: 330.9 cm3; (16)Polarizability: 33.89×10-24cm³; (17)Surface Tension: 25.9 dyne/cm; (18)Density: 0.877 g/cm³; (19)Flash Point: 108.6 °C; (20)Enthalpy of Vaporization: 45.25 kJ/mol; (21)Boiling Point: 234.9 °C at 760 mmHg; (22)Vapour Pressure: 0.0787 mmHg at 25°C.

3. Structure Descriptors of Dodecyltrimethoxysilane
(1)SMILES: O(C)[Si](OC)(OC)CCCCCCCCCCCC
(2)InChI: InChI=1/C15H34O3Si/c1-5-6-7-8-9-10-11-12-13-14-15-19(16-2,17-3)18-4/h5-15H2,1-4H3
(3)InChIKey: SCPWMSBAGXEGPW-UHFFFAOYAB

4. Safety Information of Dodecyltrimethoxysilane
Risk Codes:
36/37/38 
Irritating to eyes, respiratory system and skin.
Safety Description:
26-36/37/39 
In case of contact with eyes, rinse immediately with lpenty of water and seek medical advice.
Wear suitable protective clothing, gloves and eye/face protection.

5. Preparation of Dodecyltrimethoxysilane
Dodecyltrimethoxysilane can be prepared by methanol; potassium salt and trihydroxydodecylsilan. It is a kind of etherification reaction. The reaction will need reagent hexane. The reaction time is 5 days with temperature of 20°C, and the yield is about 79%.


6. Other details of Dodecyltrimethoxysilane
When you are using dodecyltrimethoxysilane, please be cautious about it as the following:
It is irritating to eyes, respiratory system and skin. When you are using it, wear suitable protective clothing, gloves and eye/face protection. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.