Methyltriethoxysilane manufacturers and suppliers

Methyltriethoxysilane suppliers

Properties

Melting point:: <-40°C

Boiling point:: 141-143 °C(lit.)

Density: 0.895 g/mL at 25 °C(lit.)

vapor density: >1 (vs air)

vapor pressure: 11 mm Hg ( 20 °C)

refractive index: n20/D 1.383(lit.)

Flash point:: 75 °F

storage temp.: Store at <= 20°C.

form: liquid

Specific Gravity: 0.896

color: colorless

Odor: Mild odor

Water Solubility: INSOLUBLE

Hydrolytic Sensitivity: 7: reacts slowly with moisture/water

Sensitive: Moisture Sensitive

BRN: 1742453

Dielectric constant: 3.8500000000000001

Stability:: Moisture-sensitive. Flammable - note low flash point. Incompatible with acids, oxidizing agents, moisture, water.

InChIKey: CPUDPFPXCZDNGI-UHFFFAOYSA-N

LogP: -2.4-2.2

CAS DataBase Reference: 2031-67-6(CAS DataBase Reference)

NIST Chemistry Reference: Silane, triethoxymethyl-(2031-67-6)

EPA Substance Registry System: Triethoxymethylsilane (2031-67-6)

Safety Information

Symbol(GHS): GHS02

Signal word: Warning

Hazard statements: H226

Precautionary statements: P210

Risk Statements: 10

Safety Statements: 16

RIDADR: UN 1993 3/PG 3

WGK Germany: 3

RTECS: VV4640000

F: 10-21

Autoignition Temperature: 220 °C

TSCA: Yes

HazardClass: 3

PackingGroup: III

HS Code: 29310095

Toxicity: LD50 orally in Rabbit: 15700 mg/kg

Use

Methyltriethoxysilane is an alkylalkoxysilane. It is a clear, colorless liquid with an odor characteristic of alcohols. It hydrolyzes slowly in the presence of moisture to form reactive silanols. These react further to produce oligosiloxanes and then polysiloxanes. As a Filler Modifier, Methyltrimethoxysilane is used mainly to render a wide range of surfaces and materials water repellent (e.g. mineral fillers, pigments, glass, cardboard). It may be used pure or in solution to treat fillers, using suitable mixing equipment. It may be necessary to first pre-treat the substrate with water and/or a catalyst. It is also used in the production of silicone resins and condensation-curing silicone rubber, used as an important component in sol-gel systems. As one of the most common Alkoxy Crosslinkers, Methyltrimethoxysilane has high reactivity that precedes by nucleophilic substitution usually in the presence of acid or base catalysts.

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