Bis[3-(triethoxysilyl)propyl]tetrasulfide CAS NO.40372-72-3

1. Introduction ofBis[3-(triethoxysilyl)propyl]tetrasulfide
The Bis[3-(triethoxysilyl)propyl]tetrasulfide is an organic compoun…

1. Introduction of Bis[3-(triethoxysilyl)propyl]tetrasulfide
The Bis[3-(triethoxysilyl)propyl]tetrasulfide is an organic compound with the formula C18H42O6S4Si2. It is also named as 4,4,15,15-Tetraethoxy-3,16-dioxa-8,9,10,11-tetrathia-4,15-disilaoctadecane.The IUPAC name of this chemical is triethoxy-[3-(3-triethoxysilylpropyltetrasulfanyl)propyl]silane. The product's categories are Industrial/Fine Chemicals; Sulfur; Adhesion Promoters; Coupling Agents; Dispersing Agents; Sulfur Silanes; Surface Modifiers. Besides, it is a yellowish clear liquid, which should be stored in a closed cool and dry place. It is widely used in radial tires and rubber tire tread, carcass, tire wall, solid rubber tires and other rubber products.

2. Properties of Bis[3-(triethoxysilyl)propyl]tetrasulfide
(1)ACD/LogP: 8.04; (2)# of Rule of 5 Violations: 2; (3)ACD/LogD (pH 5.5): 8.04; (4)ACD/LogD (pH 7.4): 8.04; (5)ACD/BCF (pH 5.5): 757450.06; (6)ACD/BCF (pH 7.4): 757450.06; (7)ACD/KOC (pH 5.5): 562356.13; (8)ACD/KOC (pH 7.4): 562356.13; (9)#H bond acceptors: 6; (10)#Freely Rotating Bonds: 23; (11)Polar Surface Area: 156.58 Å2; (12)Index of Refraction: 1.503; (13)Molar Refractivity: 145.33 cm³; (14)Molar Volume: 491.1 cm³; (15)Polarizability: 57.61×10-24cm³; (16)Surface Tension: 34.1 dyne/cm; (17)Density: 1.097 g/cm³; (18)Flash Point: 262 °C; (19)Enthalpy of Vaporization: 75.07 kJ/mol; (20)Boiling Point: 509.6 °C at 760 mmHg; (21)Vapour Pressure: 5.34E-10 mmHg at 25°C.

3. Structure Descriptors of Bis[3-(triethoxysilyl)propyl]tetrasulfide
(1)SMILES: O(CC)[Si](OCC)(OCC)CCCSSSSCCC[Si](OCC)(OCC)OCC
(2)InChI: InChI=1/C18H42O6S4Si2/c1-7-19-29(20-8-2,21-9-3)17-13-15-25-27-28-26-16-14-18-30(22-10-4,23-11-5)24-12-6/h7-18H2,1-6H3
(3)InChIKey: VTHOKNTVYKTUPI-UHFFFAOYAN
(4)Std. InChI: InChI=1S/C18H42O6S4Si2/c1-7-19-29(20-8-2,21-9-3)17-13-15-25-27-28-26-16-14-18-30(22-10-4,23-11-5)24-12-6/h7-18H2,1-6H3
(5)Std. InChIKey: VTHOKNTVYKTUPI-UHFFFAOYSA-N

4. Safety Information of Bis[3-(triethoxysilyl)propyl]tetrasulfide
Hazard Symbols:
Safety Description: 23-24/25

5. Preparation of Bis[3-(triethoxysilyl)propyl]tetrasulfide
Bis-[3-(triethoxy silyl propyl)]tetrasulfide was synthesized by use of new technology and raw materials. Its total sulfur is as high as 22.3% and the yield is about 98%.This compound is a new type of rubber assistant.

6. Use of Bis[3-(triethoxysilyl)propyl]tetrasulfide
Bis[3-(triethoxysilyl)propyl]tetrasulfide, silane coupling agent NQ-6901, reacts with fillers containing silanol groups during mixing and with the polymer during the vulcanization process under formation of covalent chemical bonds. This imparts better tensile strength, higher module, reduced compression set, increased abrasion resistance and optimized dynamic properties.

7. Other details of Bis[3-(triethoxysilyl)propyl]tetrasulfide
When you are using Bis[3-(triethoxysilyl)propyl]tetrasulfide, please be cautious about it as the following:
When you are using it, avoid contact with skin and eyes and do not breathe gas/fumes/vapour/spray (appropriate wording to be specified by the manufacturer).