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Tablets refer to circular or irregularly shaped solid preparations made from raw materials or suitable excipients. The pharmacopoeia fully clarifies the regulations that tablets should comp......
Oil particle size is an objective measure of the particle size in petroleum products, which reflects the distribution, size, size, and quantity of particles in the oil. Oil particle pollution ref......
Coatings generally have four basic components: film-forming substances (resins), pigments (including physical pigments), solvents, and additives. Among them, film-forming substances are the......
Ethylene glycol is the main component of antifreeze, accounting for about 45% of the original antifreeze solution. The original antifreeze solution can be mixed with water in a certain proport......
Viscosity refers to the impedance ability of a fluid to flow, which is expressed in pharmacopoeia as dynamic viscosity, kinematic viscosity, or intrinsic viscosity. Measuring the viscosity of ......
Vaseline is a semi liquid mixture of alkanes or saturated hydrocarbons, obtained by fractional distillation of petroleum. Its state is between solid and liquid at room temperature. Vaseline is......
The commonly used methods for analyzing total sulfur include: Microcoulomb method, lamp burning method, oxygen bomb method, ability dispersive X-ray fluorescence method, ultraviolet fluor......
The actual gum of engine fuel refers to the deep brown yellow or black complex substance generated by the evaporation (artificial oxidation) of engine fuel in the hot air flow specified in the t......