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The different ultramarines—green, blue, red, and violet—are finely ground and washed with water. [21] Synthetic ultramarine is a more vivid blue than natural ultramarine, since the particles in synthetic ultramarine are smaller and more uniform than the particles in natural ultramarine and therefore diffuse light more evenly. [23]
YInMn Blue is chemically stable, does not fade, and is non-toxic. It is more durable than alternative blue pigments such as ultramarine or Prussian blue, retaining its vibrant color in oil and water, and is safer than cobalt blue, which is a suspected carcinogen and may cause cobalt poisoning. [26]
Copper phthalocyanine ("phthalo blue") is a synthetic blue pigment frequently used in paints, inks, and dyes. It is highly valued for its superior properties such as light fastness, tinting strength, covering power and resistance to the effects of alkalis and acids. It has the appearance of a blue powder, insoluble in most solvents including ...
The word is derived from the Latin word caeruleus (Latin: [kae̯ˈru.le.us]), "dark blue, blue, or blue-green", which in turn probably derives from caerulum, diminutive of caelum, "heaven, sky". [2] "Cerulean blue" is the name of a blue-green pigment consisting of cobalt stannate (Co 2 SnO 4). The pigment was first synthesized in the late ...
Water color can reveal physical, chemical and bacteriological conditions. In drinking water, green can indicate copper leaching from copper plumbing and can also represent algae growth. Blue can also indicate copper, or might be caused by syphoning of industrial cleaners in the tank of commodes, commonly known as backflowing.
Bluing, laundry blue, dolly blue or washing blue is a household product used to improve the appearance of textiles, especially white fabrics. Used during laundering , it adds a trace of blue dye (often synthetic ultramarine , sometimes Prussian blue ) to the fabric.
"International Klein Blue" (IKB) is a process registered in France on 19 May 1960 at the Institut national de la propriété industrielle (INPI) under Soleau envelope no. 63471 by the French artist Yves Klein. It combines ultramarine blue pigment with a specific binder created with the help of a chemist. By law, no one can appropriate a colour.
Payne's grey is a dark blue-grey colour used in painting. Originally a mixture of iron blue (Prussian blue), yellow ochre and crimson lake, [3] Payne's grey now is often a mixture of blue (ultramarine, phthalocyanine, or indigo) and black, [4] [5] or of ultramarine and burnt sienna.