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Og Rosin

Og Rosin

Og Rosin

rosin, also called colophony, or colophonium, translucent, brittle, friable resin used for varnish and in manufacturing many products. It becomes sticky when warm and has a faint pinelike odour. Gum rosin consists of the residue obtained upon distillation of the oleoresin (a natural fluid) from pine trees (the volatile component is spirit of turpentine); wood rosin, obtained by solvent extraction of the stumps, is usually of a darker colour.

Rosin

Rosin consists mainly of abietic acid, and combines with caustic alkalis to form salts (rosinates or pinates) that are known as rosin soaps. In addition to its extensive use in soap making, rosin is largely employed in making varnishes (including fine violin varnishes), sealing wax and various adhesives. It is also used for preparing shoemakers' wax, for pitching lager beer casks, and numerous other purposes such as providing backing surfaces to tin ware, copper ware, or even silver and gold vessels when embossing or engraving them. Its relatively low melting point, and firm solid form allows liquid rosin to be poured into the vessel, and when cooled allows embossing or engraving of the vessel without deforming the vessel - even if it has a skin which is quite thin. Afterwards, the object can be reheated in an oven, and the rosin poured out for reuse. Any remaining rosin film can easily be rinsed away with alcohol or other solvents.The type of rosin used with bowed string instruments is determined by the diameter of the strings. Generally this means that the larger the instrument is, the softer the rosin should be. For instance, double bass rosin is generally soft enough to be pliable with slow movements. A cake of bass rosin left in a single position for several months will show evidence of flow, especially in warmer weather.

Rosin is a solid form of resin obtained from pines and other plants, mostly conifers. It is prepared from heating fresh liquid resin to vaporize the volatile liquid terpene components. Rosin is used in various commercial and industrial applications, including printing, lead-tin industry, and food production. In the pharmaceuticals, rosin is used in film forming and coating tablets and enterically administered agents, as well as forming microcapsules and nanoparticles. Rosin has shown to mediate antibacterial actions on Gram-positive bacterial species Rosin is a type of resin, the sticky material exuded by trees and plants. To use rosin, it needs to be heated — at room temperature, it's brittle and hard, but when it's warmed rosin becomes thick and melted. In addition to perfecting the sound of a bow on strings, rosin is also an ingredient in ink, glue, certain types of paper, and soap, among many other uses. The Greek root rhetine means "resin of the pine." (Source: www.vocabulary.com)

 

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