Method for determination of kinematic viscosity of pharmaceutical grade dimethyl silicone oil
This product is a linear polymer of dimethylsiloxane, containing 97.0% ~ 103.0% of polymerized dimethylsiloxane. The viscosity varies with the degree of polymerization. According to the different viscosity of movement, this product is divided into 20, 50, 100, 200, 350, 500, 750, 1000, 12 500, 30 000 ten models.
【 Properties 】 This product is colorless clear oily liquid; Odorless or almost odorless.
Viscosity the viscosity of the product at 25℃ (general rule 0633 a method, capillary diameter of 2mm; The second method is adopted when the viscosity is 1000mm2/s and above) shall comply with the provisions in the attached table.
According to the general requirements of the Chinese Pharmacopoeia in 2020, the viscosity of pharmaceutical grade dimethyl silicone oil is determined, the viscosity is less than 1000mm2/s, and the general principle 0633 a method of pinchman's viscosity method is used to measure the viscosity of 1000mm2/s and above, and the second method of Uhman's viscosity method is used to measure. Shandong Shengtai instrument Co., LTD., specializing in the production of pharmaceutical full motion viscosity tester is completely in accordance with the Chinese pharmacopoeia method to design and manufacture. ST204C automatic dual-purpose kinematic viscosity tester can be used in general 0633 a method can also be used in general 0633 second method, ST204C automatic drug dual-use kinematic viscosity instrument applies to the general principles of the "Chinese pharmacopoeia" 2020 0633 a flat capillary viscosity measurement method and the method of ubbelohde capillary viscometer measurement, design and manufacture of this law is relatively method is used to measure a certain volume of liquid under the action of gravity through the time needed for capillary, for movement of the fluid viscosity.