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Rosin (/ ˈ r ɒ z ɪ n /), also known as colophony or Greek pitch (Latin: pix graeca), is a resinous material obtained from pine trees and other plants, mostly conifers. The primary components of rosin are diterpenoids, i.e., C 20 carboxylic acids. Rosin consists mainly of resin acids, especially abietic acid. [1]
A resin is a solid or highly viscous liquid that can be converted into a polymer. [1] Resins may be biological or synthetic in origin, but are typically harvested from plants. Resins are mixtures of organic compounds, predominantly terpenes. Well-known resins include amber, hashish, frankincense, myrrh and the animal-derived resin, shellac.
Shellac is a natural bioadhesive polymer and is chemically similar to synthetic polymers. [16] It can thus be considered a natural form of plastic. With a melting point of 75 °C (167 °F), it can be classed as a thermoplastic used to bind wood flour, the mixture can be moulded with heat and pressure.
Such resins can include resin acids, esters, or alcohols. The exudate is a mobile to highly viscous liquid often containing crystallized resin particles. Over time and as a result of other influences the exudate loses its liquidizing components or gets chemically converted into a solid material (i.e. by autoxidation). [1]
Mastic is excreted by the resin glands of the evergreen shrub Pistacia lentiscus [3] and dries into pieces of brittle, translucent resin. When chewed, the resin softens and becomes a bright white and opaque gum. The flavor is bitter at first, but after some chewing, it releases a refreshing flavor similar to pine and cedar.
Guaiacum officinale is one of two species yielding the true lignum vitae, the other being Guaiacum sanctum.Guaiac, a natural resin extracted from the wood, is a colorless compound that turns blue when placed in contact with substances that have peroxidase activity and then are exposed to hydrogen peroxide.
Home Depot’s viral 12-foot skeleton lives up to the hype. Its oversized design makes for an eye-catching Halloween display, and once assembled, it’s surprisingly stable considering its size. Pros
Copal from Madagascar with spiders, termites, ants, elateridae, hymenoptera, cockroach and a flower A sample of copal containing a few termites. Copal is a tree resin, particularly the aromatic resins from the copal tree Protium copal (Burseraceae) used by the cultures of pre-Columbian Mesoamerica as ceremonially burned incense and for other purposes. [1]