Paraffin wax is a mixture of solid higher alkanes, the molecular formula of the main component is CnH2n+2, where n=17~35. Paraffin wax is divided into food grade (food grade and packaging grade, the former is excellent) and industrial grade, food grade is non-toxic, and industrial grade is inedible. Paraffin does not react with common chemical agents, but can burn. Catalytic cracking can be used in industry. The main performance indicators of paraffin are melting point, oil content and stability. According to the degree of processing and refining, it can be divided into three types: fully refined paraffin wax, semi-refined paraffin wax and crude paraffin wax. Each type of wax is divided into different varieties according to the melting point, generally every 2°C, such as 52, 54, 56, 58 and other grades. Application: Crude paraffin has a high oil content and is mainly used to make matches, fiberboards, tarpaulins, etc. Fully refined paraffin wax and semi-refined paraffin wax are widely used, mainly used as components and packaging materials of food, oral medicine and some commodities (such as wax paper, crayons, candles, carbon paper), coating materials for baking containers, and used for fruit preservation , Insulation of electrical components, improvement of rubber aging resistance and flexibility. It can also be used for oxidation to generate synthetic fatty acids.