Methyltriacetoxysilane

CAS No.：4253-34-3

Important Notice

This product is a chemical product/pharmaceutical intermediate. It is not a drug, an active pharmaceutical ingredient (API), or a pharmaceutical-grade material. It has not been granted a drug approval number or a Chemical Drug Substance Approval Notice, has not passed drug-related review and approval, and is not manufactured, tested, or released in accordance with pharmaceutical GMP.
This product is intended solely for non-clinical research, process development, quality studies, further chemical processing, or chemical synthesis. It must not be used in drug-product manufacturing, clinical trials, clinical diagnosis, or administration to humans or animals, or be sold, used as an input, submitted for regulatory filing, or released as an API or pharmaceutical material.
The purchaser must not use this product, or supply it to another party, for personal consumption, sports or fitness, weight loss, health supplements, food, or animal feed.

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Methyltriacetoxysilane Basic information

Product Name:	Methyltriacetoxysilane
Synonyms:	LABOTEST-BB LT01406986;apk1(silanederivative);k10s;methylsilanetrioltriacetate;methyl-silanetriotriacetate;methyltriacetoxy-silan;Methylsilanetriyl triacetate;METHYLTRIACETOXYSILANE
CAS:	4253-34-3
MF:	C7H12O6Si
MW:	220.25
EINECS:	224-221-9
Product Categories:	Si (Classes of Silicon Compounds);Silane Coupling Agents;Silane Coupling Agents (Intermediates);Silyl Esters;Si-O Compounds;Acetoxy Silanes;Alkyl;Silicone series;Functional Materials;Crosslinkers;Crosslinking Agents
Mol File:	4253-34-3.mol

Methyltriacetoxysilane Chemical Properties

Melting point	40-45 °C(lit.)
Boiling point	94-95 °C9 mm Hg(lit.)
density	1.20 g/mL at 20 °C(lit.)
vapor pressure	0.053-26Pa at 20-25℃
refractive index	1.52-1.522
Fp	185 °F
solubility	soluble in Methanol
form	solid
Specific Gravity	1.175
color	White or Colorless to Almost white or Almost colorless
Water Solubility	1000g/L at 20℃
Hydrolytic Sensitivity	7: reacts slowly with moisture/water
Sensitive	Moisture Sensitive
BRN	1788668
InChIKey	TVJPBVNWVPUZBM-UHFFFAOYSA-N
LogP	-2.4 at 20℃
CAS DataBase Reference	4253-34-3(CAS DataBase Reference)
NIST Chemistry Reference	Methyltriacetoxysilane(4253-34-3)
EPA Substance Registry System	Silanetriol, 1-methyl-, 1,1,1-triacetate (4253-34-3)

Safety Information

Hazard Codes	Xi
Risk Statements	36/37/38
Safety Statements	26-36
RIDADR	UN1759
WGK Germany	2
RTECS	VV4500000
F	9-21
TSCA	Yes
HazardClass	8
PackingGroup	III
HS Code	29319090

MSDS Information

Provider	Language
SigmaAldrich	English
ALFA	English

Methyltriacetoxysilane Usage And Synthesis

Chemical Properties	Methyltriacetoxysilane (MTAC) is a clear to yellowish liquid with acrid odor of acetic acid (vinegar). It hydrolyzes in the presence of moisture (acetic acid is released) to form silanols, which can react with themselves to pro-duce siloxanes or bind to inorganic substrates.
Flammability and Explosibility	Notclassified

Methyltriacetoxysilane Preparation Products And Raw materials

Raw materials

Acetic anhydride-->Sodium acetate-->Methyltrichlorosilane-->Chloromethyl silane-->Chlorotrimethylsilane-->Acetic acid

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