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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 Structure](CAS/GIF/1873-88-7.gif) |
| 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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