What is White Spirit?
White spirit or mineral spirit is a clear liquid based on kerosene (kerosene), which can refer to 400, 402, 403, 406 and 410 solvents. These materials consist of aliphatic and aromatic hydrocarbons, which have their own properties and odors based on the percentage of aromatic compounds present. These solvents are divided into two categories, high aromatic and low aromatic, based on the percentage of aromatic compounds present. Among the types of white spirit solvents, 402 solvent has special importance and applications. They have a melting point of -40 degrees Celsius and a boiling point range of 200-150 degrees Celsius.
Types of white sprites:
In general, there are two types of classification for white spirits 1- according to the percentage of aromatic compounds 2- according to the flash point
In the first classification, there are four types of white sprites. Type 0 (high odor), type 1 (hydrosulfurization), type 2 (low odor) and type 3 (odorless). The composition of different types of white spirit depends on the production process.
Type 0:
White spirit with a lot of smell. This type includes predominantly saturated hydrocarbons having carbon numbers in the range of C9C-12 and boiling points approximately between 140-220°C.
Type 1:
This type of white spirit is obtained from the zero-type catalytic desulfurization process. These solvents contain hydrocarbons with carbon numbers in the range of C7C-12 and boiling points approximately between 90-230°C (<25% aromatics).
Type 2:
This solvent, which is low aromatic white spirit and a complex combination of hydrocarbons obtained by solvent extraction, contains aliphatic hydrocarbons in the range of 7 C to 12 C and boiling point in the range of approximately 230-90 °C (aromatics less than 5%).
Type 3:
The fourth type of white spirit is a complex combination of hydrocarbons that is obtained using the hydrogenation method in the presence of a catalyst, and the boiling point is approximately between 65-230 degrees Celsius. This type includes hydrocarbons whose carbon number is mainly in the range of 12-C6C and aromatic <1% (odorless).
In the second classification, there are three different degrees for each type of white spirit in terms of flammability. Each degree is determined by the conditions of distillation.
Low flash point: with a flash point in the range of 21 to 30 degrees Celsius.
Normal flash point: the flash point is in the range of 31 to 54 degrees Celsius.
High flammability: with a flash point of more than 54 degrees Celsius.
This classification is determined according to the crude oil used as a raw material and distillation conditions
