Phthalocyanine green, also known as Pigment Green 7 or PG7, is a synthetic green pigment derived from phthalocyanine blue. It is one of the most widely used green pigments due to its excellent properties.
Chemical Formula: C32H3Cl15CuN8
Molecular Weight: 1029.78 g/mol
Appearance: Bright green crystalline powder
溶解性: 水およびほとんどの有機溶媒に不溶
Synthesis
Phthalocyanine green is synthesized by chlorinating copper phthalocyanine (phthalocyanine blue). This process introduces chlorine atoms into the molecule, resulting in the green hue.
Paints and Coatings: Extensively used in decorative paints, industrial coatings, and automotive finishes due to its vibrant color and durability.
Printing Inks: Widely used in various printing processes, including gravure, flexography, and screen printing, due to its excellent dispersion and stability.
Plastics: Used to color plastics and polymers because of its resistance to heat and chemicals.
繊維：繊維の染色や印刷に使用され、高い堅牢性を備えています。
Cosmetics: Used in certain cosmetic formulations that require green pigments.
Artists’ Colors: Preferred by artists for its bright, stable green hue in oil, acrylic, and watercolor paints.
高い着色力: 最小限の顔料で強い着色力を実現します。
Lightfastness: Highly resistant to fading when exposed to light.
化学的安定性: 酸、アルカリ、溶剤に対して耐性があり、さまざまな用途に適しています。
無毒: 一般的に消費者向け製品での使用は安全であると考えられています。
環境と安全に関する考慮事項
Phthalocyanine green is considered non-toxic and environmentally benign. However, standard safety precautions should be followed to avoid inhalation or prolonged skin contact, which could cause irritation.
Phthalocyanine green was developed after the success of phthalocyanine blue in the mid-20th century. The introduction of chlorine atoms to the phthalocyanine structure provided a new, stable green pigment with superior properties compared to earlier green pigments.
In summary, phthalocyanine green is a highly versatile and durable pigment used in a wide range of applications, offering excellent performance characteristics and safety.
