Tetramethylsilane with oxime groups

Main applications: It is used as a curing agent and crosslinking agent for room‑temperature vulcanizing silicone rubber. Tetrabutylketoxysilane is often blended with methyltris(β‑ketoxymethyl)silane, which can significantly accelerate the surface drying of ketoxime‑cured RTV silicone rubbers, prevent surface cracking, and enhance properties such as tensile strength. Replacing vinyltris(β‑ketoxymethyl)silane with tetrabutylketoxysilane eliminates the tendency of the latter to yellow over time. Furthermore, when using tetrabutylketoxysilane, an organotin catalyst may be omitted, making it suitable for applications where organotin compounds are not permitted.

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Product Identification and Physicochemical Properties:

Molecular formula:	Si[ON=C(CH3)CH2CH3]4	Molecular weight:	372.54
CAS NO.:	34206-40-1	EINECS NO.:	251-882-0
Melting point (°C):	40	Boiling point (°C, 760 mmHg):	390
Others:	It can react with water, releasing butanone oxime.

Quality Standard (Enterprise Standard): Toluene Solution of Tetramethyltetraoxosilane Oxime:

Item	Indicator
Appearance	Colorless or pale yellow transparent liquid
Tetramethylsilane content (%)	40–50
Dimer content (%)	4 Max
Diketone oxime content (%)	4 Max
Boiling point (°C, 760 mmHg)	110
Density (g/mL, 25°C)	0.928–0.932
Refractive index (25°C)	1.483
pH	6.5-7.5

Main uses:

　　A vulcanizing and crosslinking agent for room‑temperature vulcanizing silicone rubber. Tetrabutylketoxysilane is often used in combination with methyltris(β‑ketoxymethyl)silane, which can significantly accelerate the surface drying of ketoxime‑cured RTV silicone rubbers, prevent surface cracking, and enhance tensile strength, among other properties. Replacing vinyltris(β‑ketoxymethyl)silane with tetrabutylketoxysilane eliminates the tendency of the latter to yellow over time. Moreover, when tetrabutylketoxysilane is employed, an organotin catalyst can be omitted, making it suitable for applications where organotin compounds are not permitted.

Packaging:

　　25 kg/plastic drum, 190 kg/plastic drum or lined steel drum, 950 kg/IBC

Storage and Transportation:

　　1. Store in a cool, well-ventilated warehouse. Keep away from sources of ignition and heat. Store separately from oxidizers and food-grade chemicals; never mix or transport together. The storage area should be equipped with appropriate facilities to contain leaks.

　　2. Ensure the container lid is tightly sealed and store the container in an upright position; mechanical damage is strictly prohibited. Do not expose it to humid air, and do not reuse the container.

　　3. At the time of shipment, packaging must be intact, and loading must be secure. During transport, ensure that containers do not leak, topple, fall, or sustain damage. Protect against exposure to sunlight and rain, and guard against high temperatures during transit.

Keywords: Tetramethylsilane with oxime groups

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Main applications: It is used as a vulcanizing agent and crosslinking agent for room-temperature-vulcanizing silicone rubber, and also serves as an adhesion promoter for bonding silicone rubber to plastics, nylon, ceramics, glass, and other materials.

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Tetramethylsilane with oxime groups

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