The structure of Paraffin wax

There are several arguments for the chemical element symbols of paraffin. One is that the main component of paraffin is a mixture of two elements, C and H. (may contain oxygen, but this is not the main) its chemical element symbol is CxHy. Another way of saying this is that paraffin is a mixture of several higher alkanes, mainly n-docosane (C22H46) and n-octadecane (C28H58), containing about 85% carbon and about 14% hydrogen. There is no single chemical. Element symbol.

The main data is also known as crystalline wax, a mixture of hydrocarbons with a carbon number of about 18 to 30. The main component is a linear alkane (about 80% to 95%), and a small amount of alkanes with individual branches and long sides. A chain of monocyclic naphthenes (the total content of both is 20% or less). Paraffin wax is a sheet or needle crystal obtained by solvent refining, solvent dewaxing or wax freezing crystallization, solvent dewaxing to obtain a wax paste, and then deoiling and refining. According to the degree of processing and refining, it can be divided into three types: fully refined paraffin, semi-refined paraffin and crude paraffin. 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 so on. Crude paraffin has a high oil content and is mainly used for making matches, fiberboard, canopy canvas, etc. Fully refined paraffin and semi-refined paraffin are widely used as food and oral medicines and components and packaging materials for certain commodities (such as wax paper, crayons, candles, carbon paper), coating materials for baking containers, for fruit preservation. Insulation of electrical components, improvement of rubber aging resistance and increased flexibility, etc., can also be used to oxidize to synthesize fatty acids.
Density (20 ° C, g / cm 3) 0.87 ~ 0.98
Flash point (°C) >230
Kinematic viscosity (mm2/s 100°C) 5～16
Freezing point (coagulation point °C) -20~12
Aniline point (°C) 80～112
Acid value (mgkOH/g) 1.45~1.52
Aromatic hydrocarbon (CA) content % <10
Naphthenic (CN) content % 35±5
Paraffin (CP) content % 60 ± 5