A colourant/colour additive (British spelling) or colorant/color additive (American spelling) is a substance that is added or applied in order to change the colour of a material or surface. Colourants can be used for many purposes including printing, painting, and for colouring many types of materials such as foods and plastics. Colourants work by absorbing varying amounts of light at different wavelengths (or frequencies) of its spectrum, transmitting (if translucent) or reflecting the remaining light in straight lines or scattered.
Most colourants can be classified as dyes or pigments, or containing some combination of these. Typical dyes are formulated as solutions, while pigments are made up of solid particles suspended and are generally suspended in a vehicle (e.g., linseed oil). The colour a colourant imparts to a substance is mediated by other ingredients it is mixed with such as binders and fillers are added, for example in paints and inks. In addition, some colourants impart colour through reactions with other substances.
Colourants, or their constituent compounds, may be classified chemically as inorganic (often from a mineral source) and organic (often from a biological source).
colourant, colourant, colour, additive, british, spelling, colorant, color, additive, american, spelling, substance, that, added, applied, order, change, colour, material, surface, used, many, purposes, including, printing, painting, colouring, many, types, ma. A colourant colour additive British spelling or colorant color additive American spelling is a substance that is added or applied in order to change the colour of a material or surface Colourants can be used for many purposes including printing painting and for colouring many types of materials such as foods and plastics Colourants work by absorbing varying amounts of light at different wavelengths or frequencies of its spectrum transmitting if translucent or reflecting the remaining light in straight lines or scattered Most colourants can be classified as dyes or pigments or containing some combination of these Typical dyes are formulated as solutions while pigments are made up of solid particles suspended and are generally suspended in a vehicle e g linseed oil The colour a colourant imparts to a substance is mediated by other ingredients it is mixed with such as binders and fillers are added for example in paints and inks In addition some colourants impart colour through reactions with other substances Colourants or their constituent compounds may be classified chemically as inorganic often from a mineral source and organic often from a biological source Contents 1 Regulation 1 1 United States 2 See also 3 ReferencesRegulation EditUnited States Edit In the US the Food and Drug Administration FDA regulates colourants for food safety and accurate labelling 1 See also EditFood colouringReferences Edit Overview of Food Ingredients Additives amp Colors Food and Drug Administration This colour related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Colourant amp oldid 1077641538, wikipedia, wiki, book, books, library,
