Methyltributylketoxysilane

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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Product Introduction

Product Identification and Physicochemical Properties:

Chinese alias:	Methyltris(methyl ethyl ketoxime)silane; O,O’,O’’-tributylketoximomethylsilane
Molecular formula:	C13H27N3O3Si	Molecular weight:	301.46
CAS NO.:	22984-54-9	EINECS NO.:	245-366-4
Melting point (°C):	-22	Boiling point (°C, 2 mmHg):	110-112
Others:	It can react with water, releasing butanone oxime.

Quality Standard (Enterprise Standard):

Item	Indicator
Item	First-class product	Qualified product
Appearance	Colorless, transparent liquid	Colorless or pale yellow transparent liquid
Content (%)	≥97.5	≥95.0
Density (g/mL, 25°C):	0.970~0.985	0.970~0.985
Refractive index (20°C):	1.4540~1.4590	1.4540~1.4590
pH	6.5~7.5	6.5~7.5

Main uses:

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

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 the container to humid air, and do not reuse it.

　　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: Methyltributylketoxysilane

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Next: Vinyl tributyl oxime silane

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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