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
દ્રાવ્યતા: પાણીમાં અદ્રાવ્ય અને મોટાભાગના કાર્બનિક દ્રાવકો
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.
ટેક્સટાઈલ્સ: ડાઈંગ અને પ્રિન્ટિંગ ટેક્સટાઈલમાં કાર્યરત, ઉચ્ચ સ્થિરતાના ગુણધર્મો પ્રદાન કરે છે.
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.
ઉચ્ચ ટિંટિંગ સ્ટ્રેન્થ: ન્યૂનતમ રંગદ્રવ્ય સાથે મજબૂત રંગ પ્રદાન કરે છે.
Lightfastness: Highly resistant to fading when exposed to light.
રાસાયણિક સ્થિરતા: એસિડ, આલ્કલી અને દ્રાવકો માટે પ્રતિરોધક, તેને વિવિધ એપ્લિકેશનો માટે યોગ્ય બનાવે છે.
બિન-ઝેરી: સામાન્ય રીતે ઉપભોક્તા ઉત્પાદનોમાં ઉપયોગ માટે સલામત માનવામાં આવે છે.
પર્યાવરણીય અને સલામતી વિચારણાઓ
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.
