1,3-Dichloro-1,1,3,3-tetraisopropyldisiloxane
- CAS No.
- 69304-37-6
- Chemical Name:
- 1,3-Dichloro-1,1,3,3-tetraisopropyldisiloxane
- Synonyms
- TIPSCL;1,1,3,3-TETRAISOPROPYL-1,3-DICHLORODISILOXANE;TIPDSICL2;1,3-DICHLOROTETRAISOPROPYLDISILOXANE;DK365;DK870;DKSI013;DKFELEX0228;JACS-69304-37-6;2,6-DiMethyl-3,5-dichloro
- CBNumber:
- CB1100268
- Molecular Formula:
- C12H28Cl2OSi2
- Molecular Weight:
- 315.43
- MDL Number:
- MFCD00009655
- MOL File:
- 69304-37-6.mol
- MSDS File:
- SDS
- TDS File:
- TDS
| Product description | Number | Pack Size | Price |
| 1,3-Dichloro-1,1,3,3-tetraisopropyldisiloxane 97% | 337005 | 1g | $49.5 |
| 1,3-Dichloro-1,1,3,3-tetraisopropyldisiloxane 97% | 337005 | 5g | $146 |
| 1,3-Dichloro-1,1,3,3-tetraisopropyldisiloxane [Hydroxyl Protecting Agent] >97.0%(GC) | D1608 | 5g | $92 |
| 1,3-Dichloro-1,1,3,3-tetraisopropyldisiloxane [Hydroxyl Protecting Agent] >97.0%(GC) | D1608 | 25g | $275 |
| 1,3-Dichloro-1,1,3,3-tetraisopropyl-1,3-disiloxane ≥98.5%(GC) | 00934 | 1ML | $18.53 |
| More product size | |||
| Boiling point | 70 °C0.5 mm Hg(lit.) |
|---|---|
| Density | 0.986 g/mL at 25 °C(lit.) |
| refractive index |
n |
| Flash point | >230 °F |
| storage temp. | Inert atmosphere,2-8°C |
| solubility | Miscible with dimethylformamide, hexane, ethyl acetate, chloroform and dichloromethane. |
| form | Oil |
| Specific Gravity | 0.986 |
| color | Colourless |
| Sensitive | Moisture Sensitive |
| Hydrolytic Sensitivity | 8: reacts rapidly with moisture, water, protic solvents |
| BRN | 1934216 |
| InChI | InChI=1S/C12H28Cl2OSi2/c1-9(2)16(13,10(3)4)15-17(14,11(5)6)12(7)8/h9-12H,1-8H3 |
| InChIKey | DDYAZDRFUVZBMM-UHFFFAOYSA-N |
| SMILES | [Si](Cl)(C(C)C)(C(C)C)O[Si](Cl)(C(C)C)C(C)C |
| CAS DataBase Reference | 69304-37-6(CAS DataBase Reference) |
| UNSPSC Code | 12352001 |
| NACRES | NA.22 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS05 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Danger | |||||||||
| Hazard statements | H290-H314 | |||||||||
| Precautionary statements | P280-P303+P361+P353-P305+P351+P338+P310 | |||||||||
| Hazard Codes | C | |||||||||
| Risk Statements | 34 | |||||||||
| Safety Statements | 26-27-28-36/37/39-45 | |||||||||
| RIDADR | UN 3265 8/PG 2 | |||||||||
| WGK Germany | 3 | |||||||||
| F | 10-21 | |||||||||
| Hazard Note | Corrosive | |||||||||
| TSCA | No | |||||||||
| HazardClass | 8 | |||||||||
| PackingGroup | II | |||||||||
| HS Code | 29319090 | |||||||||
| Excepted Quantities | Not Permitted as Excepted Quantity | |||||||||
| NFPA 704 |
|
1,3-Dichloro-1,1,3,3-tetraisopropyldisiloxane price More Price(51)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | 337005 | 1,3-Dichloro-1,1,3,3-tetraisopropyldisiloxane 97% | 69304-37-6 | 1g | $49.5 | 2026-04-30 | Buy |
| Sigma-Aldrich | 337005 | 1,3-Dichloro-1,1,3,3-tetraisopropyldisiloxane 97% | 69304-37-6 | 5g | $146 | 2026-04-30 | Buy |
| TCI Chemical | D1608 | 1,3-Dichloro-1,1,3,3-tetraisopropyldisiloxane [Hydroxyl Protecting Agent] >97.0%(GC) | 69304-37-6 | 5g | $92 | 2026-04-30 | Buy |
| TCI Chemical | D1608 | 1,3-Dichloro-1,1,3,3-tetraisopropyldisiloxane [Hydroxyl Protecting Agent] >97.0%(GC) | 69304-37-6 | 25g | $275 | 2026-04-30 | Buy |
| Chem-Impex | 00934 | 1,3-Dichloro-1,1,3,3-tetraisopropyl-1,3-disiloxane ≥98.5%(GC) | 69304-37-6 | 1ML | $18.53 | 2026-05-19 | Buy |
1,3-Dichloro-1,1,3,3-tetraisopropyldisiloxane Chemical Properties,Uses,Production
Description
1,3-Dichloro-1,1,3,3-tetraisopropyldisiloxane is a moisture-sensitive, colourless, transparent, corrosive liquid that is miscible with a wide range of organic solvents but insoluble in water. It can be used to protect the two hydroxyl groups in nucleoside and carbohydrate substrates simultaneously. It can also be used as a solvent for chromatography and as a reagent for polymer synthesis. In addition, it is a stabiliser for polymers and a surfactant for emulsions.
Chemical Properties
Colorless liquid
Physical properties
bp 70°C/0.5 mmHg; d 0.986 g cm3.
Uses
1,3-Dichloro-1,1,3,3-tetraisopropyldisiloxane is used in the analysis of Watson-Crick and Hoogstein base pairing in nucleotides. Also used in the formation of ribavirin chemical delivery systems.
Uses
1,3-Dichloro-1,1,3,3-tetraisopropyldisiloxane can be used as simultaneous protection of the 3'- and 5'-hydroxyl functions of
furanose nucleosides;protecting group for carbohydrates;3,4
protecting group reagent for open-chain polyhydroxy compounds;
preparation of cyclic bridged peptides.
The reagent
design was based upon the fact that triisopropylsilyl chloride
reacts 1000 times faster with primary alcohols than secondary
alcohols. Thus in the case of 3',5'-dihydroxy nucleosides the
reagent initially silylates at the 5'-position. This is then followed
by intramolecular reaction with the secondary alcohol at the
3'-position to give the doubly protected derivative (eq 1).
Uses
1,3-Dichloro-1,1,3,3-tetraisopropyldisiloxane is a silylating reagent used for simultaneous protection of 3'- and 5'-hydroxy functions of ribonucleosides. It is used in the analysis of Watson-Crick and Hoogstein base pairing in nucleotides. It is also employed in the formation of ribavirin chemical delivery systems. Further, it serves as a protecting group reagent for open-chain polyhydroxy compounds. In addition to this, it is involved in the preparation of cyclic bridged peptides.
Preparation
can be prepared starting from trichlorosilane by treatment with i-PrMgCl, H2O, and acetyl chloride. Alternatively, it can be prepared by the reaction of 1,1,3,3- tetraisopropyldisiloxane with CCl4 in the presence of catalytic PdCl2.This method is also suitable for its in situ preparation.
Hazard
1,3-Dichloro-1,1,3,3-tetraisopropyldisiloxane is a silane-based reagent that is irritating to the eyes on contact and corrosive to the skin, causing burns; inhalation can cause corrosive damage to the upper respiratory tract and lungs.
Synthesis
18043-71-5
69304-37-6
General procedure for the synthesis of 1,3-dichloro-1,1,3,3-tetraisopropyldisiloxane from 1,1,3,3-tetraisopropyldisiloxane: The chlorination reaction needs to be carried out in THF, making sure that all Si-H bonds are chlorinated, using an excess of TCCA (molar ratio 1:1, TCCA to siloxane). This was done as follows: 1,1,3,3-tetraisopropyldisiloxane and THF (ratio 20 mL THF/g raw material) were added to the reaction flask and the mixture was cooled to -20 °C. TCCA was added in batches with vigorous stirring, and after the addition of TCCA, stirring was continued for 15 min, after which the cooling bath was removed and the reaction mixture was allowed to warm slowly to room temperature. It should be noted that the chain length, substituent or Si-H bond position of the siloxanes may affect the subsequent separation and characterization methods. Upon completion of the reaction, THF and unreacted TCCA need to be removed immediately to prevent denaturation of the product after several days.
References
[1] Synthetic Communications, 1987, vol. 17, # 11, p. 1299 - 1308
[2] Journal of Organometallic Chemistry, 2018, vol. 875, p. 1 - 4
[3] Tetrahedron Letters, 1999, vol. 40, # 6, p. 1197 - 1200
[4] Synthetic Communications, 1999, vol. 29, # 20, p. 3499 - 3501
[5] Journal of the American Chemical Society, 1983, vol. 105, # 12, p. 4059 - 4065
1,3-Dichloro-1,1,3,3-tetraisopropyldisiloxane Preparation Products And Raw materials
Raw materials
Preparation Products
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Shanghai Daken Advanced Materials Co.,Ltd | +86-2158073036 | info@dakenam.com | China | 13901 | 58 |
| Shanghai Zhuangming Biopharma Co., Ltd. | inquiry@zmsilane.com | China | 725 | 58 | |
| INNOBIO PHARM CO.,LTD | +8615600141006 | cindyyb@126.com | China | 279 | 58 |
| Capot Chemical Co.,Ltd. | +8613336195806 | sales@capot.com | China | 29640 | 60 |
| Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 | info@tianfuchem.com | China | 21588 | 55 |
| Nanjing ChemLin Chemical Industry Co., Ltd. | 025-83697070 | product@chemlin.com.cn | CHINA | 3009 | 60 |
| ATK CHEMICAL COMPANY LIMITED | +undefined-21-51877795 | ivan@atkchemical.com | China | 33024 | 60 |
| career henan chemical co | +86-0371-86658258 +8613203830695 | sales@coreychem.com | China | 29815 | 58 |
| Jinan Carbotang Biotech Co.,Ltd. | +8615866703830 | figo.gao@foxmail.com | China | 8497 | 58 |
| Jinan Shengqi pharmaceutical Co,Ltd | 86+18663751872 | christine@shengqipharm.com | CHINA | 491 | 58 |
View Lastest Price from 1,3-Dichloro-1,1,3,3-tetraisopropyldisiloxane manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2025-10-23 | 1,3-Dichloro-1,1,3,3-tetraisopropyldisiloxane
69304-37-6
|
US $0.00-0.00 / KG | 5KG | 98% | 5000kg | INNOBIO PHARM CO.,LTD | |
 |
2025-04-04 | 1,3-DICHLORO-1,1,3,3-TETRAISOPROPYLDISILOXANE
69304-37-6
|
US $0.00-0.00 / kg | 1kg | 98% | 1Ton | Henan Aochuang Chemical Co.,Ltd. | |
 |
2024-08-07 | 1,3-Dichloro-1,1,3,3-Tetraisopropyldisiloxan
69304-37-6
|
US $0.00-0.00 / KGS | 5KGS | 97+% | 10ton/year | Yunbio Tech Co.,Ltd. |
-
- 1,3-Dichloro-1,1,3,3-tetraisopropyldisiloxane
69304-37-6
- US $0.00-0.00 / KG
- 98%
- INNOBIO PHARM CO.,LTD
-
- 1,3-DICHLORO-1,1,3,3-TETRAISOPROPYLDISILOXANE
69304-37-6
- US $0.00-0.00 / kg
- 98%
- Henan Aochuang Chemical Co.,Ltd.
-
- 1,3-Dichloro-1,1,3,3-Tetraisopropyldisiloxan
69304-37-6
- US $0.00-0.00 / KGS
- 97+%
- Yunbio Tech Co.,Ltd.
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