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CAS RN: 681-84-5 | Product Number: T0588
Tetramethyl Orthosilicate
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Purity: >99.0%(GC)
Synonyms:
- Tetramethoxysilane
- TMOS
Product Documents:
| Size | Unit Price | Same Day | 2-3 Business Days | Other Lead Time |
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|---|---|---|---|---|---|
| 25G |
$29.00
|
9 | ≥100 | Contact Us | |
| 100G |
$70.00
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7 | ≥100 | Contact Us | |
| 500G |
$183.00
|
31 | ≥100 | Contact Us |
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| Product Number | T0588 |
| Purity / Analysis Method | >99.0%(GC) |
| Molecular Formula / Molecular Weight | C__4H__1__2O__4Si = 152.22 |
| Physical State (20 deg.C) | Liquid |
| Storage Temperature | Room Temperature (Recommended in a cool and dark place, <15°C) |
| Store Under Inert Gas | Store under inert gas |
| Condition to Avoid | Moisture Sensitive |
| CAS RN | 681-84-5 |
| Reaxys Registry Number | 1699658 |
| PubChem Substance ID | 87576485 |
| SDBS (AIST Spectral DB) | 5354 |
| MDL Number | MFCD00008341 |
Specifications
| Appearance | Colorless to Almost colorless clear liquid |
| Purity(GC) | min. 99.0 % |
Properties (reference)
| Melting Point | -4 °C |
| Boiling Point | 122 °C |
| Flash point | 29 °C |
| Specific Gravity (20/20) | 1.03 |
| Refractive Index | 1.37 |
GHS
| Pictogram |
|
| Signal Word | Danger |
| Hazard Statements | H330 : Fatal if inhaled. H315 : Causes skin irritation. H318 : Causes serious eye damage. H371 : May cause damage to organs. H372 : Causes damage to organs through prolonged or repeated exposure. H373 : May cause damage to organs through prolonged or repeated exposure. H226 : Flammable liquid and vapor. |
| Precautionary Statements | P501 : Dispose of contents/ container to an approved waste disposal plant. P260 : Do not breathe dust/ fume/ gas/ mist/ vapors/ spray. P270 : Do not eat, drink or smoke when using this product. P240 : Ground/bond container and receiving equipment. P210 : Keep away from heat/sparks/open flames/hot surfaces. No smoking. P233 : Keep container tightly closed. P243 : Take precautionary measures against static discharge. P241 : Use explosion-proof electrical/ ventilating/ lighting/ equipment. P242 : Use only non-sparking tools. P271 : Use only outdoors or in a well-ventilated area. P264 : Wash skin thoroughly after handling. P280 : Wear protective gloves/ eye protection/ face protection. P284 : Wear respiratory protection. P370 + P378 : In case of fire: Use dry sand, dry chemical or alcohol-resistant foam to extinguish. P308 + P311 : IF exposed or concerned: Call a POISON CENTER/doctor. P362 + P364 : Take off contaminated clothing and wash it before reuse. P303 + P361 + P353 : IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water/shower. P332 + P313 : If skin irritation occurs: Get medical advice/ attention. P304 + P340 + P310 : IF INHALED: Remove person to fresh air and keep comfortable for breathing. Immediately call a POISON CENTER/doctor. P305 + P351 + P338 + P310 : IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a POISON CENTER/doctor. P403 + P233 : Store in a well-ventilated place. Keep container tightly closed. P403 + P235 : Store in a well-ventilated place. Keep cool. P405 : Store locked up. |
Related Laws:
| RTECS# | VV9800000 |
Transport Information:
| UN Number | UN2606 |
| Class | 6.1 / 3 |
| Packing Group | I |
| Air Transportation | Forbidden for Air Transport |
| H.S.code* | 2920.90-000 |
Application
Tetramethyl Orthosilicate (TMOS) as a Direct Amidation Reagent
4-Methylbenzylamine (274 mg, 2 mmol), benzoic acid (244 mg, 2 mmol), toluene (9.4 mL) and tetramethylorthosilicate (592 μL, 4 mmol) are charged into flask. This mixture is purged under nitrogen after the mixture is heated to reflux. After the reaction has completed, the volatiles are removed in vacuo. THF (10 mL) is added. Aqueous K2CO3 solution (0.3 M, 30 mL, 9 mmol) is added, then solid NaCl is added until saturation is observed. The aqueous phase is extracted with THF, and the combined organic layers are dried over sodium sulfate, filtered and concentrated in vacuo to afford the N-(4-methylbenzyl)benzamide (441 mg, 98% yield) as a colorless solid.
References
- Tetramethyl Orthosilicate (TMOS) as a Reagent of Direct Amidation of Carboxylic Acids
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