Pigment Green 7 is not quite as unusual as other pigments, but it still has plenty of uses in the production of plastic toys and containers, and it’s far more versatile than you might expect from an industrial pigment with such an odd name. Here’s what you need to know about Pigment Green 7.
Pigment Green 7 (PG7) is an organic pigment with a color shade ranging from bluish green to yellowish green, depending on its composition and concentration. The pigment derives its name from the color index number it was assigned in 1927 at the GAF Corporation.
Pigment Green 7, or PG7, is an organic pigment that has been in use since the early 20th century, and it’s still commonly used today by Largest phthalocyanine Pigment Green 7 Manufacturer and fabricators alike because of its excellent color stability and beautiful vibrancy. However, this pigment can be somewhat hard to find, especially if you don’t know what to look for. Luckily, with this ultimate guide to Pigment Green 7 and other plastic pigments on the market, you’ll learn how to find and utilize PG7 in order to create the best products possible!
What are pigment green 7 colors?
First synthesized in 1916, pigment green 7 has been used in multiple industries including printing, plastic pigments and even medicine. It is known for having very high covering power which means it can be used in small amounts and can create a very bright color. For example, only 0.2% of pigment green 7 will yield a pure bright green color with high transparency when applied over certain substrates. This means that pigment green 7 has extremely low light absorption while also having good hiding power so it doesn’t appear yellow when printed on white paper or transparent substrates. Due to its relatively low cost, high hiding power and pure range of available colors you may find yourself wondering what are pigment green 7 colors?
Safety Data Sheets (SDS)
SDSs are required for all hazardous materials, including plastic pigments. They provide a wealth of information about how each material should be handled and what precautions need to be taken when using it. For example, workers who handle powder pigments should avoid inhaling them and wear NIOSH-approved respirators. SDSs should always be consulted before working with any chemicals or reading more detailed information on any material’s properties. Your local chemical supplier may have individual SDS sheets available, but you can also find them online through organizations like American Chemistry Council, European Chemicals Agency and Material Safety Data Sheets Network. You can also search for industry-specific repositories or find relevant info on Material Safety Online or OSHA’s Chemical Hygiene Planner website.
Properties, uses, and health effects
Phthalocyanine pigments are large molecules that consist of a repeating chain of phthalocyanine rings. These rings contain a diimide-substituted pyridine moiety in which two nitrogen atoms are situated on each ring, one above and one below. Phthalocyanine has a characteristic color that is greenish gray or teal blue (depending on amount). It can be used to color plastics and other materials, but it is only soluble in aromatic solvents like xylene or toluene. This can make manufacturing phthalocyanine-based plastic pigments difficult and expensive. Additionally, phthalocyanines are known to have low heat stability, so they may not be suitable for use in many plastic applications.
In terms of its physical properties, Pigment Green 7 is an aqueous dispersion. In other words, it can be used in products that are water based, such as plastics and coatings (i.e., films and adhesives). It has a particle size range of 15 nm-20 μm. And it has a density at 20C of 0.84 g/cm3. I hope that’s clear…the density is low, which means good flow and leveling properties!
It has a minimum density of 0.964g/cm3 and a specific gravity of 1.071 at 20 °C (68 °F). Its melting point is 96–101 °C (205–218 °F), which makes it one of the lowest-melting phthalocyanine pigments available; however, it can be sublimed from its foil at approximately 150–180 °C (302–356 °F). It is soluble in organic solvents such as toluene and xylene. It has a tendency to become brown or black when exposed to light for extended periods of time.
In fact, some pigments—like titanium dioxide and zinc oxide—are used as active ingredients in sunscreens. These pigments are used to block ultraviolet rays because they reflect light and scatter it; for years, people have used titanium dioxide in sunscreen lotions that block harmful UV rays from reaching skin. But despite these benefits, there are some risks associated with using these pigments.