Ultramarines are a class of vibrant blue, green, and violet pigments derived from the mineral lapislazuli, which has been used for centuries in art and various applications. They are synthetically produced by heating a mixture of soda ash, sulfur, and powdered lapis lazuli or other silica sources, resulting in a range of colors with unique properties. Ultramarines are valued for their intense color, lightfastness, and resistance to fading, making them popular in paints, inks, cosmetics, and plastics. They are also known for their non-toxic nature and are used in food coloring and pharmaceuticals. The production process and composition of ultramarines have evolved over time, with modern variants offering a broader spectrum of hues and improved performance characteristics.
The CAS Registry Mumber 11118-33-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,1,1,1 and 8 respectively; the second part has 2 digits, 3 and 3 respectively. Calculate Digit Verification of CAS Registry Number 11118-33: (7*1)+(6*1)+(5*1)+(4*1)+(3*8)+(2*3)+(1*3)=55 55 % 10 = 5 So 11118-33-5 is a valid CAS Registry Number.