1,1,3,3-Tetramethyldisiloxane
- CAS No.
- 3277-26-7
- Chemical Name:
- 1,1,3,3-Tetramethyldisiloxane
- Synonyms
- TMDSO;TETRAMETHYLDISILOXANE;TMDO;(Me2HSi)2O;Dimethylsilyl ether;Disiloxane, 1,1,3,3-tetramethyl-;5-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-2-(trifluoromethyl)pyridine;DK740;DK741;DK265
- CBNumber:
- CB5355451
- Molecular Formula:
- C4H14OSi2
- Molecular Weight:
- 134.32
- MOL File:
- 3277-26-7.mol
- MSDS File:
- SDS
- Modify Date:
- 2024/7/11 17:04:31
| Melting point | <-78°C |
|---|---|
| Boiling point | 70-71 °C (lit.) |
| Density | 0.76 g/mL at 25 °C (lit.) |
| vapor pressure | 250 hPa (20 °C) |
| refractive index |
n |
| Flash point | 14 °F |
| storage temp. | Store at <= 20°C. |
| solubility | soluble in Chloroform |
| pka | 11.9[at 20 ℃] |
| form | liquid |
| Specific Gravity | 0.757 |
| color | colorless |
| explosive limit | 0.8-62.9%(V) |
| Water Solubility | DECOMPOSES |
| Sensitive | Moisture Sensitive |
| Hydrolytic Sensitivity | 3: reacts with aqueous base |
| BRN | 1733364 |
| InChIKey | NVYQDQZEMGUESH-UHFFFAOYSA-N |
| LogP | -0.38-4.5 at 20-25℃ |
| CAS DataBase Reference | 3277-26-7(CAS DataBase Reference) |
| NIST Chemistry Reference | ((CH3)2SiH)2O(3277-26-7) |
| EPA Substance Registry System | Disiloxane, 1,1,3,3-tetramethyl- (3277-26-7) |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS02 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Danger | |||||||||
| Hazard statements | H225 | |||||||||
| Precautionary statements | P210-P233-P240-P241-P242-P243 | |||||||||
| Hazard Codes | F | |||||||||
| Risk Statements | 11-36/37/38-16 | |||||||||
| Safety Statements | 16-26-36-9-33-29 | |||||||||
| RIDADR | UN 2924 3/PG 2 | |||||||||
| WGK Germany | 3 | |||||||||
| RTECS | JN1000000 | |||||||||
| F | 10-21 | |||||||||
| Autoignition Temperature | 240 °C | |||||||||
| TSCA | Yes | |||||||||
| HazardClass | 3 | |||||||||
| PackingGroup | II | |||||||||
| HS Code | 29310095 | |||||||||
| NFPA 704 |
|
1,1,3,3-Tetramethyldisiloxane price More Price(8)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich(India) | 235733 | 1,1,3,3-Tetramethyldisiloxane 97% | 3277-26-7 | 25G | ₹2717.08 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | 235733 | 1,1,3,3-Tetramethyldisiloxane 97% | 3277-26-7 | 100G | ₹8281.13 | 2022-06-14 | Buy |
| TCI Chemicals (India) | T1437 | 1,1,3,3-Tetramethyldisiloxane min. 97.0 % | 3277-26-7 | 25ML | ₹3300 | 2022-05-26 | Buy |
| TCI Chemicals (India) | T1437 | 1,1,3,3-Tetramethyldisiloxane min. 97.0 % | 3277-26-7 | 250ML | ₹8800 | 2022-05-26 | Buy |
| ottokemi | T 6229 | 1,1,3,3-Tetramethyldisiloxane 97% | 3277-26-7 | 25gm | ₹2205 | 2022-05-26 | Buy |
1,1,3,3-Tetramethyldisiloxane Chemical Properties,Uses,Production
Description
1,1,3,3-Tetramethyldisiloxane is soluble in many organic solvents, such as aromatic hydrocarbon and petroleum hydrocarbons, and so on. This product is a kind of widely used organic silicon intermediates, and usually be used as organic silicon blocking agent. Due to containing reactive Si-H groups in the molecular structure, it can be used in the synthesis of copolymer macromolecule by hydrosilylation. The synthesis of copolymer macromolecule can be made into a series of reactive silicone oil.
Chemical Properties
Colorless or yellowish transparent liquid
Uses
1,1,3,3-Tetramethyldisiloxane is used as a monomer in the production of silicone polymers or silicone resins. It is used as a precursor to prepare other organosilicon compounds. It is also utilized in non-aqueous polymer preparation as well as a laboratory reagent.
Purification Methods
1,Possible impurity is 1,1,5,5-tetramethyl-3-trimethylsiloxytrisiloxane b 154-155o/733mm. Fractionate it, collect fractions boiling below 80o and re-fractionate it. Its purity can be analysed by alkaline hydrolysis and measuring the volume of H2 liberated followed by gravimetric estimation of silica in the hydrolysate. It is unchanged when stored in glass containers in the absence of moisture for 2-3 weeks. Small amounts of H2 are liberated on long storage. Care should be taken when opening a container due to pressure developed. [Speier et al. J Am Chem Soc 79 974 1958, Emeléus & Smythe J Chem Soc 609 1958, IR: Kriegsmann Z Anorg Chem 299 78 1959, Beilstein 4 IV 3991.]
References
https://www.alfa.com/en/catalog/B23697/
http://www.organic-chemistry.org/chemicals/reductions/tetramethyldisiloxane-TMDSO.shtm
https://www.infona.pl/resource/bwmeta1.element.elsevier-722236cc-df38-37aa-bbed-029ec07d525f
1,1,3,3-Tetramethyldisiloxane Preparation Products And Raw materials
| Supplier | Tel | Country | ProdList | Advantage | Inquiry |
|---|---|---|---|---|---|
| Lanya Chem Industries Pvt Ltd | +91-7290016802 +91-9996207397 | Haryana, India | 34 | 58 | Inquiry |
| TCI Chemicals (India) Pvt. Ltd. | 1800 425 7889 | New Delhi, India | 6778 | 58 | Inquiry |
| CLEARSYNTH LABS LTD. | +91-22-45045900 | Hyderabad, India | 6351 | 58 | Inquiry |
| Clearsynth Labs | 91-22-45045900 | Maharashtra, India | 3889 | 58 | Inquiry |
| Triveni chemicals | 08048762458 | New Delhi, India | 6093 | 58 | Inquiry |
| Sisco Research Laboratories Pvt. Ltd. | +91-22-4268 5800 | Mumbai, India | 4317 | 58 | Inquiry |
| Otto Chemie Pvt. Ltd. | +91 9820041841 | Mumbai, India | 5873 | 58 | Inquiry |
| Sai Carbohydrates | 91-9490021226 | Hyderabad, India | 54 | 58 | Inquiry |
| SIMAGCHEM CORP | +86-13806087780 | China | 17367 | 58 | Inquiry |
| CD Chemical Group Limited | +8615986615575 | China | 20356 | 58 | Inquiry |
| Supplier | Advantage |
|---|---|
| Lanya Chem Industries Pvt Ltd | 58 |
| TCI Chemicals (India) Pvt. Ltd. | 58 |
| CLEARSYNTH LABS LTD. | 58 |
| Clearsynth Labs | 58 |
| Triveni chemicals | 58 |
| Sisco Research Laboratories Pvt. Ltd. | 58 |
| Otto Chemie Pvt. Ltd. | 58 |
| Sai Carbohydrates | 58 |
| SIMAGCHEM CORP | 58 |
| CD Chemical Group Limited | 58 |
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