Pharmaceutical grade dimethyl silicone oil

[9006-65-9] This product is a linear polymer of dimethyl siloxane, containing 97.0% to 103.0% polymerized dimethyl siloxane. Due to different degrees of polymerization, there are different viscosities. According to the different viscosity of motion, this product is divided into ten models: 20, 50, 100, 200, 350, 500, 750, 1000, 12500, and 30000. 【 Appearance 】 This product is a colorless and clear oily liquid. Insoluble in water or ethanol. The relative density of this product (General Rule 0601) should comply with the provisions of the attached table at 25 ℃. The refractive index of this product (General Rule 0622) should comply with the provisions in the attached table at 25 ℃.

 According to the attenuated total reflection infrared spectroscopy method (General Rule 0402), scan the infrared spectra of the sample and the reference substance of dimethyl silicone oil at wave numbers of 4000-700 cm-1, calculate the absorbance (peak height) near the wave number of 1259 cm-1, and calculate the content of polydimethylsiloxane in dimethyl silicone oil according to the following formula: polydimethylsiloxane content (%)=100 (Au/As) (Ds/Du), where Au is the absorbance of the sample; As is the absorbance of the reference substance; Du is the relative density of the sample at 25 ℃; Ds is the relative density of the reference substance at 25 ℃. [Category] Medicinal excipients, defoamers, lubricants, etc. 【 Storage 】 Sealed storage.