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Paraffin wax Information

What is paraffin? Paraffin wax is the common name for a good mixture of solid alkanes. Below is a summary of the writing of the chemical formula of paraffin, the uses of paraffin, and its composition.

Chemical formula of paraffin: CnH2n + 2, where n = 20-40.

What is paraffin wax? Paraffin is a white waxy solid with a slight odor. It can be prepared from the waxy fraction of natural or artificial oil by cold pressing or solvent wax removal, sweating and other methods.

paraffin wax

Paraffin wax is a crystalline solid product derived from petroleum. It is a mixture of different hydrocarbons, i.e. hydrocarbons with different molecular weights. It consists primarily of normal paraffin and some solid isoparaffins, cycloalkanes, and small amounts of aromatic hydrocarbons. 

Commercially available paraffin waxes generally have a carbon number of 22 to 36, a molecular weight of 360 to 540 and a boiling point of 300 to 550 ° C. 

As the molecular weight increases, the boiling point and melting point of paraffin wax increase. the normal paraffin in the composition decreases and the isoparaffin and solid naphthenic increase. The chemical composition of paraffin from different crude oils is also different.

Yellow paraffin wax or lightly refined wax contains residues of non-hydrocarbon components. Although these complex organic compounds of sulfur, nitrogen, and oxygen contain only small amounts, the stability of paraffin is significantly impaired. 

Because some ring aromatic hydrocarbons condensed in paraffin into small amounts of aromatic compounds are harmful to the human body, paraffins are used in the food and pharmaceutical industries.

 Therefore, condensed ring aromatic hydrocarbons are used. It must be less than the previously defined index.

paraffin wax

In some laboratory analyzes of paraffin mass spectrometers, when the data on the chemical composition of each fraction is divided by the number of carbon atoms in the molecule, all fractions with fewer carbon atoms in the molecule are normal alkanes. 

The proportion of carbon atoms increases, the concentration of isoparaffins and cycloalkanes increases, and wax aromatics occur only in the carbon-rich fraction. Therefore, under the same purification conditions as in a typical commercial paraffin wax, the aromatic hydrocarbon content of the low quality wax molten ring is lower than that of the high quality wax.

Paraffin wax is a mixture of hydrocarbons, so it does not have a pure exact melting point for the compounds. The melting point of so-called paraffin wax is the temperature at which the stopping phase first appears in the cooling curve when the molten paraffin sample is cooled under certain conditions. 

All kinds of wax products need paraffin wax with excellent heat resistance. That is, it does not melt, soften, or shape at a certain temperature. Commercially available paraffin waxes can have a number of different melting points depending on the conditions of use, the range and time of use, and the environment of use.

The major factor influencing the melting point of paraffin is the weight of the selected feedstock fraction. 

The melting point of paraffin in the heavy fractions is high. In addition, the oil has a large effect on the melting point of paraffin. The more oil paraffin contains, the lower the melting point.

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