Methylphenyl cyclosiloxane (CAS No. 68037 - 54 - 7, including 546 - 45 - 2, 77 - 63 - 4, 34239 - 75 - 3), IOTA R21 is a chemical material full of mystery and great value. Its emergence has brought new development opportunities to many industries.

High Purity Ensuring Stable Quality

The active substance content is greater than 99.0% and 99.85% (polymer - grade), which is a significant highlight of this product. High purity means better control over product quality and performance during production, reducing various problems caused by impurities. In high - end manufacturing, where material purity requirements are extremely strict, methylphenyl cyclosiloxane can precisely meet these standards, providing strong support for the production of high - quality products.

Unique Physical Properties

It appears as a colorless liquid at 25℃, giving a sense of high quality with its pure and transparent appearance. The boiling point range is from 160 - 260℃ under a pressure of 0.13kPa. This specific boiling point characteristic enables it to maintain relatively stable performance under different process conditions. With a density of 1.125g/cm³ at 25℃, this data provides a basis for accurate measurement during formula design and processing.

Cyclophenylmethicone IOTA R21-IOTA