DMC Dimethylsiloxane Cyclic Mixture
| Chemical Name: | Dimethylsiloxane Cyclic Mixture |
| Product Category: | Silicone Intermediate – Product |
| Structural Formula: |  |
| CAS No.: | 616-38-6 |
| EINECS: | 210-478-4 |
| Molecular Formula: | C3H6O3 |
| Molecular Weight: | 90.03170 |
Dimethylsiloxane Cyclic Mixture Description
Dimethylsiloxane Cyclic Mixture (DMC), CAS 616-38-6 is a colorless, transparent liquid or milky white oily liquid. It is a flammable, odorless compound, insoluble in water, and soluble in organic solvents like benzene. DMC is widely used in the production of silicone oil, silicone rubber, and silicone polymers under acid and alkali catalysis. It also serves as a methylation reagent, offering lower toxicity and biodegradability compared to alternatives like iodomethane and dimethyl sulfate.
| Equivalent Chemical Name | Methylcarbonate ((meo)2co); Dimethyl carbonate; Carbonic acid dimethyl ester; Methyl carbonate; Dimetyl carbonate; DimethyL carbonate, 99+%, anhydrous; Dimethyl carbonate, reagentplus, 99%; Dimethylcarbonateforsynthesis |
| Physical Properties | Colorless transparent liquid, molecular weight is 90.1. |
| Chemical Properties | Stable. Highly flammable. Incompatible with strong oxidizing agents, potassium t-butoxide. |
| Density(20C;g/cm3) | 1.069 |
| Refractive index | 1.361 |
| Flash Point * (°C) | 65 |
| Boiling Point (°C) | 90 |
| Melting point | 2-4 °C (lit.) |
| Sensitive | Moisture Sensitive |
| Storage temp | Store below +30°C |
| Benefits | NA |
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Dimethylsiloxane Cyclic Mixture: Guide
Dimethylsiloxane Cyclic Mixture (CAS 616-38-6) is a primary form of dimethylsiloxane, an organic-inorganic compound synthesized by hydrolysis of dimethyl dichlorosilane. The molecular structure of this mixture features silicone-oxygen (Si-O) bonds as the main chain, with organic groups attached to silicon atoms. The cyclic forms of dimethylsiloxane primarily include hexamethylcyclotrisiloxane (D3), octamethylcyclotetrasiloxane (D4), decamethylcyclopentasiloxane (D5), and dodecamethylcyclohexasiloxane (D6), comprising over 50% of the mixture. This colorless, transparent or milky white liquid is flammable, odorless, insoluble in water, and soluble in organic solvents like benzene.
