| Identification | More | [Name]
Methyltriacetoxysilane | [CAS]
4253-34-3 | [Synonyms]
LABOTEST-BB LT01406986
Methylsilanetriyl triacetate
METHYLTRIACETOXYSILANE
TRIACETOXYMETHYLSILANE
apk1(silanederivative)
k10s
methylsilanetrioltriacetate
methyl-silanetriotriacetate
methyltriacetoxy-silan
methyltrihydroxysilanetriacetate
silanetriol,
Silanetriol, methyl-, triacetate
Silanetriol,methyl-,triacetate
Methyl-Triacethoxysilane
METHYLTRIACETOXYSILANE, TECH., 90%
Triacetoxymethylsilane,96%
METHYLTRIACETOXYSILANE EETHYLTRIACETOXYSILANE 80:20 BLEND
Triacetic acid methylsilanetriyl ester | [EINECS(EC#)]
224-221-9 | [Molecular Formula]
C7H12O6Si | [MDL Number]
MFCD00008694 | [Molecular Weight]
220.25 | [MOL File]
4253-34-3.mol |
| Chemical Properties | Back Directory | [Appearance]
Colorless or yellowish transparent liquid | [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 | [color ]
White or Colorless to Almost white or Almost colorless | [Specific Gravity]
1.175 | [Odor]
Acrid odor | [Water Solubility ]
1000g/L at 20℃ | [Hydrolytic Sensitivity]
7: reacts slowly with moisture/water | [Sensitive ]
Moisture Sensitive | [BRN ]
1788668 | [InChI]
1S/C7H12O6Si/c1-5(8)11-14(4,12-6(2)9)13-7(3)10/h1-4H3 | [InChIKey]
TVJPBVNWVPUZBM-UHFFFAOYSA-N | [SMILES]
CC(=O)O[Si](C)(OC(C)=O)OC(C)=O | [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]
4253-34-3(EPA Substance) |
| Questions And Answer | Back Directory | [Preparation]
Currently, in industry, methyltrichlorosilane and acetic anhydride are commonly used as raw materials for acylation reactions to synthesize methyltriacetoxysilane products. The content can reach over 95%, and the total chlorine content is ≤100ppm. The reaction formula is as follows: CH3SiCl3 + 3C4H6O3 → (CH3CO2)3SiCH3 + 3C2H3ClO. The production process is as follows: Using methyltrichlorosilane and acetic anhydride as raw materials, the materials are added to the synthesis reactor in a certain proportion for the acylation reaction. The temperature is first raised to 80℃ for atmospheric pressure reflux reaction, and acetyl chloride is collected while refluxing at 80~95℃ until the flow is stopped. The semi-finished methyltriacetoxysilane in the synthesis reactor is transferred to a crude synthesis tank. The semi-finished product is then pumped to an acetyl chloride vacuum thin-film evaporator, where the feeding temperature is controlled at 100℃ to distill off acetic anhydride and acetyl chloride. The material is then pumped to an acetic anhydride vacuum thin-film evaporator, where the feeding temperature is controlled at 105-115℃ to obtain the finished methyltriacetoxysilane. Material containing a large amount of acetic anhydride is extracted from both vacuum thin-film evaporators and returned to the synthesis reactor. The finished methyltriacetoxysilane is then decolorized in a decolorization reactor using activated carbon at 70℃. After decolorization, the material is filtered through a candle filter into a modification reactor to obtain pure methyltriacetoxysilane. |
| Safety Data | Back Directory | [Symbol(GHS) ]
 
GHS05,GHS07 | [Signal word ]
Danger | [Hazard statements ]
H302-H314 | [Precautionary statements ]
P260-P280-P301+P312+P330-P301+P330+P331-P303+P361+P353-P305+P351+P338 | [Hazard Codes ]
Xi | [Risk Statements ]
R36/37/38:Irritating to eyes, respiratory system and skin . | [Safety Statements ]
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36:Wear suitable protective clothing . | [RIDADR ]
UN1759 | [WGK Germany ]
2
| [RTECS ]
VV4500000
| [F ]
9-21 | [TSCA ]
Yes | [REACH Registrations]
Active | [HazardClass ]
8 | [PackingGroup ]
III | [HS Code ]
29319090 | [Storage Class]
8A - Combustible corrosive hazardous materials | [Hazard Classifications]
Acute Tox. 4 Oral
Skin Corr. 1B |
| Hazard Information | Back Directory | [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. | [Uses]
Methyltriacetoxysilane is used as a silane coupling agent. | [Flammability and Explosibility]
Notclassified | [Toxics Screening Level]
The initial threshold screening level (ITSL) for methyltriacetoxysilane (CASRN 4253-34-3) remains at 0.1 μg/m3 based on an annual averaging time. |
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| Company Name: |
Wuhan canos Technology Co., Ltd Gold
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027-83238443 15327105076 |
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Alfa Aesar
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Energy Chemical
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www.energy-chemical.com |
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Maya High Purity Chemicals
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