Cesium Hydroxide(CAS 21351-79-1)
| Purity | Grade | Package | Stock | Price | Quantity |
| 50 wt% solution in water | RG | 1G | In Stock | 4 USD
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| 50 wt% solution in water | RG | 5G | In Stock | 10 USD
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| 50 wt% solution in water | RG | 25G | In Stock | 25 USD
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| 50 wt% solution in water | RG | 100G | In Stock | 73 USD
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| 50 wt% solution in water | RG | 500G | In Stock | 307 USD
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| 50 wt% solution in water | RG | 2.5KG | In Stock | 1473 USD
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Available NMR Spectrum
Verified In Stock
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Quality System
Applications of 21351-79-1
Cesium hydroxide has several industrial and research applications:
- Glass Industry: It is utilized in glass production for its ability to dissolve silica, allowing for analytical processes in glass manufacturing.
- Microelectromechanical Systems: Due to its anisotropic etching properties, cesium hydroxide is used in fabricating microelectromechanical systems by selectively etching silicon.
- Catalysis: It serves as a catalyst in various organic reactions due to its strong basicity.
Physical and chemical properties of 21351-79-1
Acidity coefficient |
11.6[at 20 ℃] |
|---|---|
Boiling Point |
100ºC at 760 mmHg |
Decomposition |
Hazardous decomposition products formed under fire conditions. - Cesium/cesium oxides. |
Density |
3.68 |
Exact Mass |
149.908188 |
Exposure Limits |
ACGIH: TWA 2 mg/m3 NIOSH: TWA 2 mg/m3 |
Melting Point |
522 °F |
Merck |
13,2022 |
Molecular Formula |
CsOH |
Molecular Weight |
149.913 |
pH |
Strong alkaline reaction. The strongest base known |
PSA |
23.06000 |
Sensitivity |
Air Sensitive |
Solubility |
(59 °F): 395% |
Stability |
Stable. Incompatible with acids. Absorbs carbon dioxide from the air. |
Vapour Pressure |
0 mmHg (approx) |
Water Solubility |
soluble |
Q&A for CAS 21351-79-1
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.
2. What is the delivery time?
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 21351-79-1
Pictograms |
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|---|---|
Signal Word |
Danger |
Hazard Statements |
H302 Harmful if swallowed H314 Causes severe skin burns and eye damage H318 Causes serious eye damage H361 Suspected of damaging fertility or the unborn child H361f Suspected of damaging fertility H373 May causes damage to organs through prolonged or repeated exposure |
Safety Data Sheet |
Download COA of 21351-79-1
Operate under the ISO 9001 system

