Specific gravity: the ratio of the volume to the density of a substance.

Refractive index: refractive index can be used to measure the purity of liquid, can be used to determine the composition of liquid

Acid value: an index to measure the pH value of the product. The pH value of the silicone oil product indicated by the above parameters is generally between 6 and 8.

Appearance: the appearance of silicone oil. Hydrogen containing methyl silicone oil is generally colorless or yellowish transparent liquid. When we introduced the identification of true and false silicone oil, we mentioned that inferior silicone oil is usually turbid. The color of silicone oil is a very important standard to distinguish the quality of silicone oil.

Hydrogen content: the biggest difference between methyl hydrogen silicone oil and other silicone oil. Familiar with methyl silicone oil, it can be seen at a glance that the determination of hydrogen content is the size of N in the molecular structure, because the end groups of general methyl silicone oil are the same.

Kinematic viscosity: This is the ratio of the dynamic viscosity and density of a liquid at the same temperature, as we mentioned in the introduction of the first two silicone oils.