Solvent 646 - find out what we are dealing with when repairing

Characteristics of the solvent 646

This solvent is a liquid, colorless or slightly yellowish, which has a specific odor. It is used both in industry and at home for diluting paints and degreasing. With its help, paint materials are adjusted to the required viscosity. In addition, they well wash the paint tools and clean up the stains of organic nature.

The solvent is very effective and versatile due to its special chemical composition. Ethanol( 15%), butanol( 10%), toluene( 50%), ethyl cellosolve( 8%), acetone( 7%), butyl acetate( 10%) all reflect the nature of the solvent 646 composition,in the majority depend on these proportions.

The 646 solvent is in high demand due to the following advantages:

  • A wide range of applications. It is suitable for priming, several types of varnishes, enamel and putty. Therefore, it is a universal tool for internal work. Almost all the work with the ceiling or walls will have to use it.
  • Availability. It can be bought at any store of building materials.
  • Ease of use. Complex composition ensures absence of danger of formation of chemical burns and fatty traces.
  • Low cost. Because of frequent use, do not forget about the money costs.

In addition to the positive qualities, the solvent P-646 also has disadvantages:

  • is easily ignited;
  • has a specific odor;
  • is toxic.

Properties and technical parameters of the

composition The solvent, which is a volatile organic compound, has the following properties:

  • autoignition temperature +403 ° C;
  • flash -7 ° C;
  • boiling point +59 ° C;
  • does not freeze;
  • does not pick up viscosity;
  • the density of the solvent is 646 - 0.87 g / cm3.

In addition, it will not be superfluous to look at the solvent's passport, although most figures will not say anything to the average person, but the technologist at the plant will be able to give recommendations or prohibit this compound on the basis of these parameters. There the solvent has the following indices:

  • water mass fraction - 0,09%;
  • acid number - 0.06 mg KOH / g;
  • volatility on ethyl ether - 12;
  • number of coagulation - 40 g / o;
  • dissolving effect - does not leave matte and whitish spots;
  • Specific gravity of solvent 646 - 0,68 kg / l.

What is particularly important in the planning of production and the formulation of safety engineering is how the 646 hazard class has a solvent. This figure for him is 3 and also spelled out in the passport.

Application and safety engineering

Solvent is used for the work and formation of different paintwork materials, including nitrocellulose group of paints. With this solvent they are either diluted before use, or it is added during production.

In addition to this group of paints, it is also used for the dilution of melaninamide and acrylic paints. Paints and varnishes, which used 646 solvent, much faster and better create a film, then it evaporates and leaves no smell.

With regard to safety, when working with the solvent indoors, it is necessary to create good ventilation, and work should be carried out in rubber gloves and a respirator. Do not be unnecessary glasses, because the steam affects not only the respiratory tract, but also the eye. Contact with the skin for a long time can cause dermatitis. If they get into skin or mucous membranes, they should be washed thoroughly with soap and water.

As this solvent belongs to the category of flammable materials, it must be handled very carefully. Do not allow sparks, open flames and smoking near the solvent.

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