Varieties and technical specifications of the varnishes of NC

Varnishes are crucial for improving the toughness and aesthetics of different surfaces. Nitrocellulose (NC) varnish is a commonly used type that is renowned for its quick drying time and glossy finish. NC varnish, which is widely used in the woodworking, musical instrument manufacturing, and even the automotive industries, has made a name for itself thanks to its special qualities.

The ability of nitrocellulose varnishes to produce a hard, smooth finish that can be highly polished makes them highly valued. Because of this, they are favored by artisans who need a finished product that looks professional. Furthermore, NC varnishes are accessible to both professionals and do-it-yourselfers due to their ease of application.

NC varnishes have practical benefits in addition to aesthetic ones. Because of their abrasion resistance, they can shield surfaces from small impacts and scratches. Furthermore, projects can be finished more quickly thanks to their quick drying time, which is a big benefit in commercial applications.

Nevertheless, NC varnishes have unique technical requirements and limitations just like any other material. Knowing these will assist you in choosing the appropriate varnish for your project. Important things to think about are the varnish’s drying time, viscosity, and suitability for various substrates. Being aware of these factors guarantees the best outcomes and durable surface protection.

Examining the range and technical details of NC varnishes will provide you with the information required to make wise choices, guaranteeing that your projects will not only look great but also endure over time. Knowing the subtleties of NC varnishes, whether you are a novice or an experienced professional, can greatly improve the caliber of your work.

Features of nitrolak

A sizable class of LKM based on synthetic or natural resins are varnishes. Their functional uses—wood and metal—differ. Among these is NC – nitrolak for wood, which is one of the products on the list for impregnating wood.

Before use, a thick substance is diluted with acids, specialized solvents, or quickly evaporated liquids (acetone, white spite). They differ in terms of reflector coefficient (matte nitrolak or glossy), hardening time, consistency, smell, and shade. They are also labeled differently.

The primary LKM classification according to solvent type:

  • Turpentine;
  • Oil;
  • Water -soluble;
  • Alcohol.

Nitro-cellulose, the raw material for NC varnish, was previously created using a chemical composition based on organic compounds. Addition of different components results in a wide range of substances receiving particular properties.

Nitro-cellulose, the raw material for NC varnish, was previously created using a chemical composition based on organic compounds.

Because of their high gloss finish and durability, nitrocellulose (NC) varnishes are versatile, fast-drying coatings that are frequently used in woodworking and musical instruments. These varnishes are available in a variety of formulations, each with special qualities designed for a particular use, like increased flexibility, hardness, or resistance to environmental elements. Users can select the best NC varnish for their projects by being aware of technical specifications like hardness, drying time, and application techniques. This will help them achieve the desired protective and aesthetic qualities.


Nitro-cellulose varnish is used in a variety of applications, from expensive yacht decoration to protecting parquet flooring, because of its unique composition. The products’ lifespan is increased by the varnish layer. This is crucial for the production of furniture and decorative coatings made from premium wood species that are susceptible to changes in humidity and temperature.

The combination of concurrent nitrolac fillers for wood and dissolved wax-like substances accounts for the remarkable protective coating. The impregnation’s composition ensures that surfaces have improved properties:

  • Natural resins;
  • Synthetic plasticizers;
  • Organic solvents;
  • Siccatives (accelerators of film formation);
  • Alkyd oligo embosses;
  • Acetylacetonates;
  • Pigments similar to shades of natural wood.

The use of ingredients found in "nitro" varnish for wood solves a number of issues, including improving product aesthetics and providing decay resistance.

Properties of varnish NC

Wood and metal are the two uses for nitrolaki. Some are made in bottles and applied to surfaces using broad brush strokes, while others are produced in aerosol spray cans for ease of use.

The consistency of the thick mass allows the varnish to spread evenly over the processed area, dry quickly, and form a solid, uniform film. When processing a large portion of the LKM surface, the finished mixture occasionally needs to be diluted by a solvent by 5–10%. It is then polymerized until the task is finished.

Depending on how brilliant it is, varnish NC blends:

  • High -gloss (almost mirror);
  • Glossy (large shine factor);
  • Half -gloss (average degree of light reflection);
  • Matte (without shine);
  • Semi -dummy (weak degree of reflection).

One is left with a glossy or matte surface after polymerization. While mating nitro-cellulose varnish leaves no trace behind, it slightly evens out the texture of the wood. Before varnishing, the product is treated with a stain in the desired shade to improve its aesthetic qualities.

Following varnish impregnation, the product has a more appealing appearance. However, more crucially, protection against various forms of damage and the adverse effects of chemical reagents in compliance with GOST standards.

The consistency of the thick mass allows the varnish to spread evenly over the processed area, dry quickly, and form a solid, uniform film.


Britain was the first country to introduce oil varnishes made from natural resins, but for monopolistic reasons, the recipe was kept a secret. Subsequently, scientists from various European nations created a comparable formula, and the official importation of colorless oil LKS was permitted. Plants were found in Europe and America by the middle of the 19th century, and in Moscow in 1874.

There is proof that the German monk Feofil created something akin to nitrolak for wood for the first time in the twelfth century. The mixture was applied when building the temple. Although the classified composition could not be deciphered, technical details about the transparent viscous fluid continued to be described.

Both colorless and tinting varnishes are available in the modern construction market:

  • Copper;
  • Bronze;
  • Gold;
  • Silver;
  • Canadian nut;
  • Red tree;
  • Machogon;
  • Eben tree and others.

In 1803, the factory plant in Europe opened for business. Enhancing the alcohol resin recipe was the focus of a French-born chemist. High-quality nitro-cellulose varnishes are now released in a number of nations, including the Russian Federation, Turkey, Kazakhstan, Poland, Finland, and Ukraine. There is a steady market for White House, Parade, and Tikkurila products.


It is simple to assess the advantages of the LAK NC 222 by looking at its technical specs and the similarity of offers from various manufacturers:

  • Nitrolaki provide high -quality protection and a noble appearance of the processed surface;
  • When applying LKM, it is often recommended to use a primer, but nitrolak combines the properties of both substances;
  • Experts note the simplicity of use if all stages of pre -processing of wood are observed;
  • The varnish is deeply impregnated with wood, the surface can be grinded;
  • A long period of operation of products opened;
  • The smooth surface is resistant to fluctuations in temperature and humidity, the product is additionally protected from mold and fungus;
  • Good quality of tinted, matte and varnish surfaces at an affordable price.

The wide range of nitrocellulose-based proposal options guarantees that a customized composition that satisfies all operational needs is selected. For instance, you can select customized compositions for deck boards, laminate, parquet flooring, or terraces.


Nitro-cellulose varnish is most frequently used in furniture manufacturing, which has spacious workshops with adequate ventilation. Many subspecies are not used in production or daily life abroad because of the strong phenol and polyester odor.

Like all products, Lac NC has some drawbacks in addition to its advantages that you should be aware of. These include:

  • Fire hazardous mixtures have a caustic smell;
  • Dry for a long time (some subspecies remain sticky a few days after application);
  • Smolish polymers in liquid form are sensitive to moisture;
  • Flying substances make them unstable in terms of polymerization time at different temperatures;
  • The smell of NC LAK in the room;
  • Low service life (up to 3 years).

There are multiple steps in the processing of wood, and if technology is not followed, the coating may form an influx and wrinkle. For added protection for metal and wood products, use colorless Nitrolak NC 62. When looking for a composition for handmade furniture, for example, prospective buyers of this type of varnish are confused by its strong smell.

Brands and technical characteristics

Examining the technical specs of NC 62 varnish and its neighboring substances, whose composition hasn’t changed since the USSR era, reveals many advantageous qualities. However, they have been formally discontinued in several European countries due to their toxicity and growing ignorance.

NC-varnishes are categorized as having both hot and cold application methods. Soluble alcohols and nitrolaki acid curing are available. These are NC-2101 (matting compositions), NC-241M (transparent varnish mixtures), and NC-241 mixes. Shiny coatings reflect UV rays and do not burn out, protecting the wood’s structure.

Nitrolaki continues to be the most well-liked product in their niche when considering the "price – quality – functionality" ratio. However, these LCMs are special because of their extremely specialized variety. The specificity of each variety defines it.


This LKM category—LAK NC 62 is regarded as universal—cannot be undervalued. It is available in red, blue, green, and brown hues, taking the place of paint and varnish.

Ceramics, glass, metal, and thick cardboard are all covered with nitrolaki, such as HC-62 and NC-132P. Buying multiple compositions is no longer necessary because a single nitrolak can open artistic installations, garlands, stained glass, and diode lamps.


The composition for external work that dries quickly is appropriate for handling metal and wood. A glossy, smooth film forms after 40–60 minutes.

Based on the technical specifications of NC-134 varnish, specialists observe that the viscosity coefficient (as measured by the Z-246 viscimeter) is between 28 and 60 degrees Celsius, the percentage of heavy materials is up to 17% (high density), and the acidity coefficient is not higher than that.


Despite having the same qualities as other LCMs, furniture varnish waterproof NC 218 is slightly more expensive than other sentences. It is applied without the need for soils, even though the coating’s quality is on par with more complex composition application technologies.

A thick coat of nitrolak NC 218 applied to furniture improves its appearance. Other types of varnish, such as baking or mirror-effect varnish, can be applied over it.

It is applied without the need for soils, even though the coating’s quality is on par with more complex composition application technologies.


This variety has numerous unique qualities. It was previously designated NC-315. Indoors, furniture, parquet flooring, and other surfaces can be coated.

The furniture Nitrolak NC-223 coating is renowned for its high hardness and polishability. The use of hot drying is permitted.


The NC-224 is not like other nitrolaks in terms of its chemical makeup. A viscous substance does not need to be diluted before applying to the processed surface because of colloxilin and other ingredients.

After polymerization, a lovely, smooth film that is simple to polish forms. Varnish was previously marked with the designation "t3." It’s a changed (better) varnish mixture now.


Lacques, formerly marketed under the name TK-N, are currently produced under the NC-225 mark. creates a coating that is sturdy, long-lasting, and polished.

Primarily, painting interior doors and decorative shields calls for the NC-225 composition with a stArat zinc. It is possible to apply a thinner coating (preserving composition) by hot drying after heating to +75 °C.

For painting interior doors and decorative shields, the NC-225 composition with a zinc stARAT is usually advised.


It’s common to mistake transparent NC-241 concentrate for NC-2101 matting varnishes. Both of them are part of the nitrolacs of acid curing with the addition of carbamide resins for resistance to moisture, frost, and chemicals.

For wood products that resolutely withstand variations in humidity and temperature, high strength of finished coatings is an invaluable attribute. Openwork wings, ornate facades, and carved wooden log cabin parts can all be applied to this varnish.

For wood products that resolutely withstand variations in humidity and temperature, high strength of finished coatings is an invaluable attribute.


Nitrolak NC 243’s hardness and resistance to mechanical damage ensure that any product used with it has a "long life." Blush things and cover up small flaws. Depending on the type of wood, the product must dry for 45 to 60 minutes before acquiring a noble pinkish or yellowish tint.

Nitrolak NC 243’s hardness and resistance to mechanical damage ensure that any product used with it has a "long life."


This Nitrolakov series representative has an extremely high-quality coating. A specialized tool called LAK NC-551 is employed in situations where other compounds are unable to complete the task.

Transparent, viscous liquid that is suspended and free of unwanted contaminants. Experts observe that the substance has a high viscosity (a viscometer reading of 130–160 C). Applying it in three to four layers eliminates concerns about the varnished surface quality and the 0.6% layer shrinkage.

The process of applying nitrolaks

Nitrolaki can be applied with a magnetic field or through conventional wood processing methods.

It is best to dip small carved pieces, door handles, and facades for a brief period of time into a varnished tank, allow any excess to drain, and then hang them to dry.

Suggestions for using an NC on wood surfaces:

  1. Complete the process of grinding wood, remove the remains of dust and chips;
  2. Open a stain of the desired shade (on an alcohol or organic basis);
  3. Apply nitrolak on a dry surface;
  4. After drying (1-2 hours), apply 2 nitrolak layers;
  5. After 6-8 hours, you can go to grinding.

Each layer of nitrolak should be applied with a brush perpendicular to the one before it. An industrial hairdryer can hasten the primary coating’s drying process.

Service life and storage of varnish NC

Nitrolaki are noted by experts to have good technical qualities. Consequently, consumers who manufacture low-cost wood products are in demand for them. They are readily available and dry quickly in ideal circumstances (low air humidity and +18–20 °C).

Shelf life guaranteed: approximately six months (refer to the production date).

Verbal liquids are generated in a range of volume containers, ranging from 0.2 to 2.5 kg/l. Nitrolaki are kept in storage rooms with UV protection, in closed containers, and at temperatures as high as +40 °C.

Precautionary measures

When working with wood, the masters consider that the quickly drying varnish hardens in one to two hours and fully polymerizes in one to two days. After application, Nitrolak appears dry but has a glue-like appearance. The completed product cannot be operated at this time; otherwise, flaws, influxes, and scratches could occur.

It’s crucial to carefully read the instructions because there are variations in the thickness of the varnish coating and the drying time of the listed compositions. Technical specifications for the LAK NC 218 will be different from those for NC 2144 or NC 134. It relies on how quickly the substance’s flying portion evaporates. It is not advisable to lean over the container when diluting or varnishing in order to avoid breathing in evaporates.

It’s crucial to carefully read the instructions because there are variations in the thickness of the varnish coating and the drying time of the listed compositions.

Nitrolaki is a highly sought-after paint specialty. They require careful handling while taking all necessary precautions because they have a distinct odor. This is the reason why not everyone chooses to purchase these compositions. Nevertheless, modern furniture varnishes have unique ingredients added to maximize evaporation—a feature of LKM with a protracted polymerization time.

Type of Varnish Technical Specifications
NC-218 Fast-drying, high gloss, used for wood and metal surfaces
NC-228 Durable, resistant to water and alcohol, ideal for furniture finishing
NC-248 Scratch-resistant, clear finish, suitable for decorative items
NC-288 Heat-resistant, used for industrial applications

Anyone working in painting and finishing needs to be aware of the different types of nitrocellulose (NC) varnishes and their technical specifications. These varnishes are a dependable way to get a high-gloss finish on metal, wood, and other surfaces because of their quick drying times. You can improve the visual appeal and long-term viability of your projects by selecting the appropriate kind of NC varnish.

There are various varieties of NC varnishes, and each is appropriate for a particular use. There are many options available, ranging from matt and glossy finishes to clear and colored versions. These varnishes are incredibly adaptable and can be used for a variety of decorative projects, furniture construction, and automobile finishing. You can choose the best kind of NC varnish by being aware of the particular needs of your project.

Important factors to take into account are technical specifications like drying time, resistance to environmental factors, and ease of application. NC varnishes are renowned for their rapid drying times—they frequently become touch-dry in a matter of minutes. They are a sensible option for numerous applications because they also offer good resistance to alcohol, water, and moderate heat. However, because of the solvents involved, they might need to be applied with adequate ventilation.

In conclusion, nitrocellulose varnishes provide a performance and practicality balance. You can make decisions that guarantee the best results for your painting and finishing needs by being aware of their varieties and technical specifications. For a dependable method of attaining a long-lasting, visually appealing finish, NC varnishes are ideal for both professionals and do-it-yourself enthusiasts.

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Interior designer, author of online color design courses. I will help you create a harmonious interior using color.

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