Inorganic pigments are not made from carbon and are made from iron oxide elements added to other substances. They are generally more opaque, have larger particles, and can withstand UV rays and sunlight. Inorganic pigments were traditionally produced from natural resources, but are now synthesized in labs. Inorganic pigments are less expensive than organic pigments, but their effects are more limited. Here are some examples of inorganic pigments.
The oldest pigments are made from iron compounds, which are relatively dull and permanent, but do not cause any health hazards. Common iron oxides have been used since antiquity and are the brown, red, and yellow earth colors. The ability to synthesize these pigments was discovered in the fifteenth century, but large-scale production did not occur until the middle of the 19th century. Generally, the purest iron oxides are produced by precipitation and hydrolysis of iron salt solutions. Various factors affect the properties of these pigments, including particle size, presence of manganese, and composition of other substances.
Inorganic pigments are better than organic ones in particle dispersion, making them more valuable for the paint and cosmetics industry. Although the global market for inorganic pigments has slowed due to concerns about metallic byproducts, the industry has only experienced a minor setback in recent years. To protect the quality of your products and ensure quality control, make sure you choose the right distributor. Brenntag is one of the leading distributors in the industry.
Inorganic pigments can be tested using various analytical techniques. Infrared spectrometry (IR) spectrometry can be used to determine the inorganic charge in paints. FTIR spectra allow the identification of pigments with multiple charges, such as titanium dioxide or calcite. They also allow you to see what type of pigment is used in a particular product. This method can be applied to other inorganic pigments.
Copper is the main source of blue and green pigments. The natural mineral form of copper, azurite, has been used for thousands of years. But since the Renaissance, brighter synthetic copper pigments have been used. By the 18th century, copper pigments such as malachite played a lesser role in artists' colors. They are not permanent, but Daniel Smith sells dark green watercolor paints in their shop.
Manganese compounds are another important pigment mineral, but they are mostly secondary components. One of the most widely used manganese pigments is manganese violet. It is a semitransparent, nonstaining, blue-green color that is lightfast. Manganese blue is a weakly tinting green pigment and is an excellent cyan hue in subtractive "primary" mixtures. Despite this, it is considered a poisonous substance.
CICPs are the most heat stable of all pigments, and can withstand aggressive environments. In acid rain, ozone, and air pollutants, they do not fade. They also remain colorfast even when in contact with acids or solvents. Therefore, they are often used in decorative ceramic coatings. It is also highly resistant to UV rays. So, CICPs are an excellent option for high-end decorative coatings.
0 Comments