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| | 1,1,1,3,5,5,5-Heptamethyltrisiloxane Basic information | | Uses |
| Product Name: | 1,1,1,3,5,5,5-Heptamethyltrisiloxane | | Synonyms: | 1,1,1,3,5,5,5-heptamethyl-trisiloxan;3H-Heptamethyltrisiloxane;heptamethyltrisiloxane;1,1,1,3,5,5,5-HEPTAMETHYLTRISILOXANE;BIS(TRIMETHYLSILOXY)METHYLSILANE;DOW CORNING 1107 WATER REPELLENT AND POWDER TREATMENT;1,1,1,3,5,5,5-HEPTAMETHYLTRISILOXANE, 97 %;40M25) | | CAS: | 1873-88-7 | | MF: | C7H22O2Si3 | | MW: | 222.5 | | EINECS: | 217-496-1 | | Product Categories: | Industrial/Fine Chemicals;Si (Classes of Silicon Compounds);Siloxanes;Si-O Compounds;Organometallic Reagents;Organosilicon | | Mol File: | 1873-88-7.mol |  |
| | 1,1,1,3,5,5,5-Heptamethyltrisiloxane Chemical Properties |
| Melting point | <0°C | | Boiling point | 142 °C (lit.) | | density | 0.819 g/mL at 25 °C (lit.) | | vapor pressure | 8.5hPa at 25℃ | | refractive index | n20/D 1.382(lit.) | | Fp | 82 °F | | storage temp. | 15-25°C | | solubility | Chloroform (Soluble), Methanol (Slightly) | | form | clear liquid | | Specific Gravity | 0.8136 | | color | Colorless to Almost colorless | | Water Solubility | Miscible with acetone, ethanol, diethyl ether. Insoluble in water. | | Hydrolytic Sensitivity | 3: reacts with aqueous base | | BRN | 1748455 | | Stability: | Stable. Flammable. Incompatible with strong oxidizing agents. | | InChIKey | QNWOFLWXQGHSRH-UHFFFAOYSA-N | | LogP | 6.2 at 20℃ | | CAS DataBase Reference | 1873-88-7(CAS DataBase Reference) | | NIST Chemistry Reference | Trisiloxane, 1,1,1,3,5,5,5-heptamethyl-,(1873-88-7) | | EPA Substance Registry System | Trisiloxane, 1,1,1,3,5,5,5-heptamethyl- (1873-88-7) |
| Hazard Codes | Xi | | Risk Statements | 10-36/37/38 | | Safety Statements | 26-36 | | RIDADR | UN 1993 3/PG 2 | | WGK Germany | 3 | | F | 10-21 | | TSCA | Yes | | HazardClass | 3 | | PackingGroup | II | | HS Code | 29319090 |
| | 1,1,1,3,5,5,5-Heptamethyltrisiloxane Usage And Synthesis |
| Uses | Heptamethyltrisiloxane is used to catalyze reduction reactions in organic syntheses. | | Description | Bis (trimethylsiloxy) methylsilane acts as an important raw material
and intermediate used in organic synthesis, pharmaceutical and
dyestuff. For example, it can be used for the platinum-catalyzed
aromatic C-H silylation of arenes. It can also be used for the
silylation of aryl iodides. | | Chemical Properties | colourless liquid | | Uses | 1,1,1,3,5,5,5-Heptamethyltrisiloxane can be used for the aromatic C-H silylation of arenes in the presence of a platinum complex catalyst.
It can also be used as a reagent to synthesize:
- 3-Octyl-1,1,1,3,5,5,5-heptamethyltrisiloxane, an agricultural adjuvant and sensory performance enhancer used in cosmetic formulations.
- Isoindigo-based conjugated polymer with siloxane-terminated solubilizing group.
- Monosiloxy esters with a variety of acids.
| | Uses | Bis(trimethylsiloxy)methylsilane is an important raw material and intermediate used in organic synthesis, pharmaceutical and dyestuff. | | Uses | 1,1,1,3,5,5,5-Heptamethyltrisiloxane is a Basic material for synthetic polyalkyleneoxide modified heptamethyltrisiloxane which is a kind of specific structure surfactant for pesticide additives, coating additives, etc. | | Flammability and Explosibility | Flammable | | References | https://www.alfa.com/zh-cn/catalog/H60586/
Murata, Miki, et al. "Silylation of Aryl Iodides with 1,1,1,3,5,5,5 -Heptamethyltrisiloxane Catalyzed by Transition-Metal Complexes." Synlett 2007.09(2007):1387-1390.
Murata, Miki, et al. "Platinum-Catalyzed Aromatic C—H Silylation of Arenes with 1,1,1,3,5,5,5-Heptamethyltrisiloxane." Cheminform38.50 (2007):no-no. |
| | 1,1,1,3,5,5,5-Heptamethyltrisiloxane Preparation Products And Raw materials |
| Raw materials | Pentasiloxane, 1,1,1,3,5,7,9,9,9-nonamethyl--->2,4,6,8-Tetramethylcyclotetrasiloxane-->PENTAMETHYLCYCLOPENTASILOXANE-->Octamethyltrisiloxane-->1,3-BIS(TRIMETHYLSILOXY)-1,3-DIMETHYLDISILOXANE-->SODIUM TRIMETHYLSILANOLATE-->hydroxytrimethylsilane-->Dichloromethylsilane-->METHYLSILANE-->Hexasiloxane, 1,1,1,3,5,7,9,11,11,11-decamethyl--->Chlorotrimethylsilane | | Preparation Products | Ethanol, 2-[3-[1,3,3,3-tetramethyl-1-[(trimethylsilyl)oxy]-1-disiloxanyl]propoxy]- |
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