GOST "Xylene oil grade A" - learn more about
substance The product in the form of a transparent liquid with a characteristic smell has been widely used in manufacturing and industry, especially in the field of organic synthesis. Indeed, xylene and its derivatives are used for the industrial production of all kinds of plastics, film materials, synthetic fibers, colorants, solvents, extractants, herbicides and many other materials.
In the composition of xylene grade A, there is a mixture of three isomers that are widely used in the production of polyester fibers( the same lavsan), film and other numerous synthesis materials. The composition is characterized as an aromatic petrochemical hydrocarbon. Its production, properties, technical and other characteristics establish GOST "Xylene oil grade A" under the number 9410-78.
According to his description, the substance does not contain water or foreign impurities, although it is transparent. The main substance is not less than 99.6% of the composition. It is light, its density at twenty degrees Celsius is less than one gram per cubic centimeter of volume. Accordingly, the composition is very volatile, evaporates without residue. The range of distillation temperatures is from 137 to 143 degrees Celsius. A 23 degrees Celsius is indicated by the flash point.
Xylene oil grade A - characteristics and properties of
All documents are considered to have xylene oil grade A characteristics of of the third hazard class. Those.refers to explosive and fire hazardous compositions. High concentration of vapors can cause poisoning, similar to the narcotic.
Also, the reaction of the skin and mucous membranes is a strong irritation. Harmful influence has a direct effect on the nervous system as a whole. When the concentration of liquid vapor from one to six percent of the volume of the enclosed space, their ignition is possible.
As you can see, the liquid is dangerous to humans and flammable. When working with a similar composition, it is necessary to use individual protection and fire protection measures. Therefore, work with the compounds should be carried out in rooms with general and local ventilation, which provides fresh air and exhaust of saturated xylene vapor from the work site.
The use of special clothing, masks and glasses is compulsory. When igniting vapors or liquids, it is necessary to use dispersed spraying of aqueous composition, chemical and air-mechanical foams.
Xylene oil grade A - safety rules for storage and transportation
In the process of aromatization of petroleum fractions, mixing of xylene and benzene, xylenes of grades A or B are obtained. The use of the products obtained, in addition to the solvents mentioned above and the source of isomers, is possible as an additive for increasing the octanenumbers in the fuel for motors, as raw materials for phthalic anhydrides and acids, many other compounds and components.
The storage terms declared by the manufacturers are from one and a half to two years. Of course, under the conditions of storage and transportation. A storage of xylenes should be carried out in closed warehouses with ventilation systems and equipped with special closed containers, observing the rules and measures for substances with increased fire hazard.
There are also requirements for the transportation of the substance. They are similar for transportation of fuel( for example, high-octane gasolines) in tanks or barrels. Transfusion of xylenes should be accompanied by measures to eliminate the effects of discharges of static electricity.