1,1,1,3,5,5,5-Heptamethyltrisiloxane
Synonym(s):1,1,1,3,5,5,5-Heptamethyltrisiloxane
- CAS NO.:1873-88-7
- Empirical Formula: C7H22O2Si3
- Molecular Weight: 222.5
- MDL number: MFCD00048000
- EINECS: 217-496-1
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-10-28 16:48:35
What is 1,1,1,3,5,5,5-Heptamethyltrisiloxane?
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
The Uses of 1,1,1,3,5,5,5-Heptamethyltrisiloxane
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.
The Uses of 1,1,1,3,5,5,5-Heptamethyltrisiloxane
Bis(trimethylsiloxy)methylsilane is an important raw material and intermediate used in organic synthesis, pharmaceutical and dyestuff.
The Uses of 1,1,1,3,5,5,5-Heptamethyltrisiloxane
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.
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.
Properties of 1,1,1,3,5,5,5-Heptamethyltrisiloxane
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 | n |
Flash point: | 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. |
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) |
Safety information for 1,1,1,3,5,5,5-Heptamethyltrisiloxane
Signal word | Danger |
Pictogram(s) |
Flame Flammables GHS02 Exclamation Mark Irritant GHS07 |
GHS Hazard Statements |
H225:Flammable liquids H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
Precautionary Statement Codes |
P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P302+P352:IF ON SKIN: wash with plenty of soap and water. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for 1,1,1,3,5,5,5-Heptamethyltrisiloxane
InChIKey | QNWOFLWXQGHSRH-UHFFFAOYSA-N |
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