Rosin
Resin from pines used for grip, adhesives, and food.
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It is a brittle, semi-transparent solid with a faint pine odor that melts at stove-top temperatures.[1][2] Pine trees and other conifers are the source of a resinous material known as rosin, which is also referred to as colophony or Greek pitch.[1] Diterpenoid carboxylic acids, particularly abietic acid, constitute the main components of rosin.[1]
Quick Facts
- Also known as
- Colophony, Greek pitch (Latin: pix graeca)
- Solubility
- Soluble in turpentine
- alcohol
- ether
- benzene
- and chloroform
- Fda status
- Approved as a miscellaneous food additive
Facts from the source article.
Key facts and history
Rosin is collected from living pine trees through a tapping process similar to maple syrup collection, which does not harm the tree.[3] After collection, the resin may be mixed with saps from larches, spruces, or firs to create specialized formulas.[3] The color of rosin is determined by the time of year it is collected.[3] Rosin is flammable and burns with a smoky flame.[2]
Paper is given a water-repellent texture through a process called "sizing," which employs rosin soaps, also known as rosinates.[1]
What the research sources say
Rosins have been used to formulate microcapsules and nanoparticles for drug delivery, as documented in papers by Lee et al. (2005) and Fulzele et al. (2004).[4][5][6] A 2009 manufacturer's brochure states that Larica Metal Rosins use only larch resin with added metals, produced through a special rhythmical method.[7] The brochure also notes that gold additive gives the rosin an especially balanced characteristic favorable for solos.[7] Excellent film forming and coating abilities are attributed to rosin derivatives, which are employed for coating tablets and for enteric coating applications.[8]
References
- Wikipedia, "Rosin" (CC BY-SA 4.0), which cites: Fiebach, "Ullmann's Encyclopedia of Industrial Chemistry", 2000 (we also read that source) en.wikipedia.org
- Wikipedia, "Rosin" (CC BY-SA 4.0), which cites: Palkin, "A new non-crystallizing gum rosin", Oil & Soap, 1938, p. 120–122 (we also read that source) en.wikipedia.org
- Scott, "The Differences Between Dark and Amber Rosin", January 5, 2004. facts only, no text reused. stringsmagazine.com
- Wikipedia, "Rosin" (CC BY-SA 4.0), which cites: Lee, "Rosin Nanoparticles as a Drug Delivery Carrier for the Controlled Release of Hydrocortisone", Biotechnology Letters, 2005, p. 1487–1490; Fulzele, "Preparation and evaluation of microcapsules using polymerized rosin as a novel wall forming material", Journal of Microencapsulation, 2004, p. 83–89 (we also read that source) en.wikipedia.org
- Chang‐Moon Lee, "Rosin Nanoparticles as a Drug Delivery Carrier for the Controlled Release of Hydrocortisone", Biotechnology Letters (2005), doi:10.1007/s10529-005-1316-x. OpenAlex metadata CC0; paper not read. doi.org
- Suniket V. Fulzele, "Preparation and evaluation of microcapsules using polymerized rosin as a novel wall forming material", Journal of Microencapsulation (2004), doi:10.1080/02652040410001653768. OpenAlex metadata CC0; paper not read. doi.org
- "Larica metal rosin", 2009. facts only, no text reused. larica.ch
- Wikipedia, "Rosin" (CC BY-SA 4.0), which cites: Satturwar, "Evaluation of polymerized rosin for the formulation and development of transdermal drug delivery system: A technical note", AAPS PharmSciTech, 2005, p. E649–E654 (we also read that source) en.wikipedia.org
Each numbered sentence above was checked against the source it cites before publication. Sentences citing Wikipedia adapt text from the English Wikipedia article Rosin (contributors), used under CC BY-SA 4.0; this entry is available under the same licence. Other sources were used for facts only; no text or images are copied from them.
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Sources
Compiled from Wikipedia and the sources listed below. Text from Wikipedia is available under CC BY-SA 4.0; this entry is adapted from it.
- Wikipedia: Rosin (CC BY-SA 4.0).
- Word definitions: the , each quoted from its Wikipedia article.
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