Contents of this article
- 1. What is paraffin? What is paraffin?
- 2. What are the main components of paraffin wax?
- 3.What is paraffin made of?
- 4.What is paraffin?
What is paraffin? What is paraffin?
1. Paraffin wax, also known as crystalline wax, is a kind of non-polar solvent soluble in gasoline, carbon disulfide, xylene, ether, benzene, chloroform, carbon tetrachloride, naphtha and other non-polar solvents, and insoluble in polar solvents such as water and methanol. Sexual solvent.
2. A hydrocarbon mixture with about 18 to 30 carbon atoms. The main components are straight-chain alkanes (about 80% to 95%), and a small amount of alkanes with individual branched chains and long-chain alkanes. Side chain monocyclic cycloalkanes (total content of both is less than 20%). Paraffin wax is a flaky or needle-shaped crystal obtained from the lubricating oil fraction obtained by distillation of crude oil through solvent refining, solvent dewaxing or wax freeze crystallization, press dewaxing to obtain wax paste, and then deoiling and refining. According to the different degrees of processing and refining, it can be divided into three types: fully refined paraffin, semi-refined paraffin and crude paraffin.
What is the main component of paraffin wax?
The main component of paraffin wax is n-alkanes.
Extremely pure n-alkanes are colorless, odorless, transparent or translucent, and will not change color or deteriorate when exposed to the atmosphere for a long time. However, commercially available paraffin cannot be 1% n-alkanes and contains a small amount of n-alkanes. Inorganic impurities such as cycloalkanes, isoparaffins, aromatic hydrocarbons, unsaturated hydrocarbons, trace amounts of iron, sulfur, and nitrogen. These impurities can give paraffin a "paraffin smell" and color (especially when exposed to the air for a long time, the color gradually becomes darker. ), lower the boiling point, and more importantly, it will cause chemical changes with various spices in the essence or catalyze the chemical effects of various ingredients, resulting in changes in the aroma and color changes and instability after fragrance is added.
What is paraffin made of?
Paraffin is a mixture of hydrocarbons derived from certain distillates of petroleum, shale oil, or other bituminous mineral oils.
The main component of paraffin is solid alkanes, which are odorless and tasteless, and are white or light yellow translucent solids. Paraffin wax is amorphous but has a clear crystalline structure.
Paraffin is a kind of non-polar solvent soluble in gasoline, carbon disulfide, xylene, ether, benzene, chloroform, carbon tetrachloride, naphtha and other non-polar solvents, and insoluble in polar solvents such as water and methanol.
The role of paraffin:
1. Crude paraffin has a relatively high oil content and can be used to make moisture-proof and waterproof packaging paper.
2. Paraffin wax can be used to make detergents, emulsifiers, greases, etc.
3. Paraffin wax can make textiles softer and smoother and more elastic.
4. Paraffin has relatively excellent heat storage capacity and can be used in the production of high-tech products.
What is paraffin?
The physical and chemical properties of paraffin wax are as follows:
1. Physical properties
1. Also known as crystalline wax, it is usually a white, odorless waxy solid that melts at 47°C-64°C and has a density of about 0.9g/cm³.
2. Paraffin is soluble in non-polar solvents such as gasoline, carbon disulfide, xylene, ether, benzene, chloroform, carbon tetrachloride, naphtha, etc., and is insoluble in polar solvents such as water and methanol. Pure paraffin is a good insulator, with a resistivity of 1013-1017 ohm meters.
2. Chemical properties
1. Paraffin is a mixture of hydrocarbons with a carbon number of about 18 to 30. The main components are straight-chain alkanes (about 80% to 95%), and a small amount of alkanes with individual branched chains and single alkanes with long side chains. Cyclocycloalkanes (the total content of both is less than 20%).
2. Paraffin does not react with common chemical reagents, but it can burn. Catalytic cracking reactions can occur industrially.
3. Paraffin wax has low chemical activity, is neutral, and has stable chemical properties. It does not interact with acids except nitric acid and alkaline solutions under normal conditions.
Extended information:
Paraffin wax uses:
1. Due to its high oil content, crude paraffin wax is mainly used to make matches, fiberboards, canvas, etc. After polyolefin additives are added to paraffin wax, its melting point is increased, and its adhesion and flexibility are increased. It is widely used in moisture-proof and waterproof packaging paper, cardboard, surface coatings of certain textiles and candle production.
2. After immersing paper in paraffin, various wax papers with good waterproof properties can be produced, which can be used in food, medicine and other packaging, metal anti-rust and printing industries; after paraffin is added to cotton yarn, it can make textiles soft, smooth and Elastic; paraffin wax can also be made into detergents, emulsifiers, dispersants, plasticizers, greases, etc.
3. Fully refined paraffin and semi-refined paraffin are widely used, mainly used as components and packaging materials for food, oral drugs and certain commodities. Coating for baking containers, used for fruit preservation, electrical component insulation, improving rubber aging resistance and increasing flexibility, etc. It can also be used for oxidation to produce synthetic fatty acids.
Reference:Baidu Encyclopedia - Paraffin
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