Tetramethoxysilane(CAS 681-84-5)
| Purity | Grade | Package | Stock | Price | Quantity |
| 99% | RG | 25G | In Stock | 4 USD
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| 99% | RG | 100G | In Stock | 5 USD
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| 99% | RG | 500G | In Stock | 17 USD
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| 99% | RG | 2.5KG | In Stock | 83 USD
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| 99% | RG | 25KG | In Stock | 811 USD
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Available NMR Spectrum
Verified In Stock
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Quality System
Applications of 681-84-5
Tetramethoxysilane finds diverse applications across various industries:
- Coatings: Used in paints and lacquers for its ability to form durable silica coatings.
- Silica Production: Serves as a precursor for synthesizing silica nanoparticles.
- Optical Devices: Employed in coating television picture tubes due to its optical clarity and stability.
- Chemical Synthesis: Acts as a reagent in organic synthesis processes, particularly for producing acetals and ketals.
Physical and chemical properties of 681-84-5
Boiling Point |
250 °F |
|---|---|
BRN |
1699658 |
Decomposition |
When heated to decomposition, it emits acrid smoke and irritating fumes. |
Density |
1.02 |
Exact Mass |
152.050491 |
explosive limit |
0.88-23.8%(V) |
Flash Point |
205 °F |
H Bond Acceptors |
4 |
H Bond Donors |
0 |
Index of Refraction |
Index of refraction: 1.3683 at 20 °C |
LogP |
log Kow = -1.93 (est) |
Melting Point |
28 °F |
Molecular Formula |
C4H12O4Si |
Molecular Weight |
152.221 |
PSA |
36.92000 |
Sensitivity |
Moisture Sensitive |
Stability |
VOLATILE |
Storage condition |
Store below +30°C. |
Vapour density |
Relative vapor density (air = 1): 5.3 |
Vapour Pressure |
(77 °F): 12 mmHg |
Water Solubility |
hydrolysis |
Spectrums of 681-84-5
1.The NMR spectrum displayed on the page is a pre-sale reference spectrum and may differ from that of the actual received batch.
2.The accompanying documentation will include the NMR spectrum and purity analysis data for the shipped batch.
Retrosynthesis analysis of 681-84-5
Q&A for CAS 681-84-5
1. How can I verify product quality?
Every batch of our Chemical Reagents is tested to meet ISO 9001 standards. We provide COA & NMR & SDS Provided with each shipment. Batch COA available for verification, and third-party retesting is supported. A full refund is offered if our data is incorrect.
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Orders from Ready stock / In stock items typically Ships Tomorrow via Fast Shipping via FedEx/DHL/UPS. International deliveries usually arrive within 7 business days, subject to customs clearance.
3. What if the received product doesn’t meet quality standards?
If your Lab Grade Chemical Reagents do not match the Batch COA available, we will issue a replacement or a full refund upon verification.
4. Are hazardous labels included? How is safe shipping ensured?
Hazardous products are labeled and packaged following international regulations. We provide SDS Provided with all hazardous shipments to ensure safe and compliant transport.
5. Do you offer technical support?
Yes. Our Lab Supplier team is available to assist with questions about product usage, storage, Lab Grade requirements, applications, and more.
6. Are volume discounts available?
Yes. For bulk orders of Chemical Reagents, we offer competitive pricing. Submit a quotation request and we’ll provide a tailored offer.
7. Do you provide samples?
Yes, samples are available for selected Lab Grade products. Please submit a request to confirm availability and specifications.
8. Do you have products in stock?
Yes. Items labeled In stock / Ready stock on our website are available for immediate shipment, usually within 1–2 business days. Large packs or custom specifications require lead time confirmation.
9. Can you customize purity or packaging?
Yes. We support customization of Lab Grade purity, packaging size, and special testing requirements. Share your needs and we’ll provide a tailored solution.
10. Is the COA consistent with the shipped batch?
Yes. Batch COA available matches the actual shipment. COAs shown online are for reference or from previous batches.
11. Do you support long-term supply agreements?
Yes. We offer Lab Supplier services for stable batch consistency, pricing agreements, and safety stock for long-term customers to ensure uninterrupted supply.
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We accept Pay Local Currency via bank transfer (T/T), PayPal, and other methods. Credit terms are available for qualified long-term partners.
Download SDS of 681-84-5
Pictograms |
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|---|---|
Signal Word |
Danger |
Hazard Statements |
H226 Flammable liquid and vapor H315 Causes skin irritation H318 Causes serious eye damage H330 Fatal if inhaled H335 May cause respiratory irritation H372 Causes damage to organs through prolonged or repeated exposure |
Safety Data Sheet |
Download COA of 681-84-5
Operate under the ISO 9001 system



