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Solvent Violet 13, also known as D&C Violet No.2, oil violet, Solvent Blue 90, Alizarine Violet 3B, Alizurol Purple, Duranol Brilliant Violet TG, Ahcoquinone Blue IR base, Quinizarin Blue, Disperse Blue 72, and C.I. 60725, is a synthetic anthraquinone dye with bright bluish violet hue.
Lightfastness is a property of a colourant such as dye or pigment that describes its resistance to fading when exposed to light. [1] [2] [3] Dyes and pigments are used for example for dyeing of fabrics, plastics or other materials and manufacturing paints or printing inks.
Oil Red O (Solvent Red 27, Sudan Red 5B, C.I. 26125, C 26 H 24 N 4 O) is a lysochrome (fat-soluble dye) diazo dye used for staining of neutral triglycerides and lipids on frozen sections and some lipoproteins on paraffin sections. It has the appearance of a red powder with an absorbance maximum at 518 nanometers. [1]
Fluorescein dye solutions, typically 15% active, are commonly used as an aid to leak detection during hydrostatic testing of subsea oil and gas pipelines and other subsea infrastructure. Leaks can be detected by divers or ROVs carrying an ultraviolet light.
Samples of halogenated BODIPY dyes in ambient lighting and fluorescing under UV. BODIPY is the technical common name of a chemical compound with formula C 9 H 7 BN 2 F 2, whose molecule consists of a boron difluoride group BF 2 joined to a dipyrromethene group C 9 H 7 N 2; specifically, the compound 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene in ...
If a leak is suspected in a refrigerator or an air conditioning system, a UV tracer dye can be injected into the system along with the compressor lubricant oil and refrigerant mixture. The system is then run in order to circulate the dye across the piping and components and then the system is examined with a blacklight lamp.