Octamethylcyclotetrasiloxane(CAS 556-67-2)
| Purity | Grade | Package | Stock | Price | Quantity |
| 98% | RG | 25ML | In Stock | 3 USD
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| 98% | RG | 100ML | In Stock | 6 USD
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| 98% | RG | 500ML | In Stock | 10 USD
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| 98% | RG | 2.5L | In Stock | 31 USD
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| 98% | RG | 25KG | In Stock | 231 USD
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Your region is eligible for ordering. Available NMR Spectrum
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Applications of 556-67-2
| Industry | Application | Process |
|---|---|---|
| Silicone Rubber Industry | Primary raw material for synthesizing methyl silicone rubber | Ring-opening polymerization to produce polydimethylsiloxane |
| Silicone Oil Production | Intermediate for preparing low-molecular-weight silicone oils | Acid- or base-catalyzed ring-opening polymerization with molecular weight control |
| Silicone Resin Manufacturing | Crosslinker or modifier for organosilicon resins | Copolycondensation with hydroxyl- or alkoxy-functional silanes |
| Textile Finishing | Used in fabric softeners and anti-wrinkle finishing agents | Emulsified with amino silicone oil and applied to fiber surfaces |
| Personal Care Products | Volatile silicone oil for skincare products and shampoos | Dissolved in formulations to impart slip and gloss |
| Coatings and Paints | Leveling agent and defoamer | Incorporated into coating systems to modify surface tension |
| Electronic Encapsulation | Precursor for low-dielectric-constant materials | Thermolysis or chemical vapor deposition to form siloxane films |
| Mold Manufacturing | Component of mold release agents | Applied to mold surfaces to form a hydrophobic protective layer |
Physical and chemical properties of 556-67-2
Boiling Point |
175 °C |
|---|---|
BRN |
1787074 |
Decomposition |
When heated to decomposition it emits acrid smoke and irritating vapors. |
Density |
Relative density (water = 1): 0.96 |
Exact Mass |
296.075165 |
explosive limit |
0.4-11.7%(V) |
Flash Point |
56 °C |
Index of Refraction |
Index of refraction: 1.3968 at 20 °C/D |
LogP |
log Kow = 6.74 (average of 3 measurements) |
Melting Point |
17.5 °C |
Merck |
14,6747 |
Molecular Formula |
C8H24O4Si4 |
Molecular Weight |
296.616 |
PSA |
36.92000 |
Sensitivity |
Moisture Sensitive |
Stability |
Stable under recommended storage conditions. |
Storage condition |
2-8°C |
Vapour density |
1 (vs air) |
Vapour Pressure |
Vapor pressure, Pa at 21.7 °C: 133.3 |
Water Solubility |
INSOLUBLE |
Spectrums of 556-67-2
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 556-67-2
Cas:541-02-6
Cas:541-05-9
Cas:88703-87-1
Q&A for CAS 556-67-2
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.
12. What payment methods do you accept?
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 556-67-2
Pictograms |
  |
|---|---|
Signal Word |
Warning |
Hazard Statements |
H226 Flammable liquid and vapor H361 Suspected of damaging fertility or the unborn child H413 May cause long lasting harmful effects to aquatic life |
Safety Data Sheet |
Download COA of 556-67-2
Operate under the ISO 9001 system
