It is understood: paraffin, colorless to white translucent lumps, pure paraffin is white, and paraffin containing impurities is yellow, tasteless, odorless, and greasy. Soluble in ether, chloroform, benzene, petroleum ether, volatile oil or various fatty oils, slightly soluble in ethanol. It has stable chemical properties and does not react with acids, alkalis, oxidants and reducing agents. It will turn yellow under ultraviolet irradiation, can burn and decompose, and is stable at room temperature.
Paraffin wax is classified in various ways The main classification methods include melting point classification, oil content classification, usage classification and color classification:
The melting point classification method is based on the melting point of paraffin wax: petroleum wax with a melting point lower than 45°C is called soft wax, and the melting point is between 45 and 60°C and the penetration at 25°C is lower than 20 (0.1mm) petroleum wax Wax is called hard wax. China’s fully refined paraffin, semi-refined paraffin, and crude paraffin all belong to the category of hard wax. Its main brands are No. 52, No. 54, No. 56, No. 58, No. 60, No. 62, No. 64, No. 66, and No. 68. No. 70, etc.;
According to the degree of paraffin refining: paraffin wax is divided into coarse The deeper the degree of refining of paraffin wax, semi-refined paraffin wax, fully refined paraffin wax and food wax, the lighter the color, the better the product quality, and the higher the production cost;
According to the appearance of paraffin wax: paraffin wax distinguishes liquid wax and solid wax;
According to the oil content of paraffin: fully refined paraffin is divided into superior grade and grade. Generally speaking, paraffin with an oil content greater than 6% is called oil-containing wax;
Based on the difference in paraffin crystal structure: paraffin is distinguished between coarse crystalline paraffin and microcrystalline wax. Coarse crystalline paraffin contains light Wax distillate produces oil-containing wax and produces microcrystalline wax, which is derived from residual oil and has a fine crystal structure;
According to the paraffin modification method, paraffin wax is divided into physically modified petroleum and chemically modified paraffin. Chemically modified paraffin is also divided into oxidized wax, chlorinated wax and maleic anhydride wax according to the modification method.
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