Pine rosin

Terpin hydrate [2451-01-6] (10), one of the most weU-known expectorants, is isolated from cmde pine rosin left after the distillation of volatile terpene hydrocarbons and alcohols. It is also manufactured from turpentine (a-pinene) by acid-cataly2ed hydration. Terpin hydrate may exist as cis and trans isomers, but only the cis isomer forms a stable, crystalline monohydrate. Terpin hydrate is available in the United States only in prescription products. 

Natural resins Burgundy pitch Copal Dammar Japanese lacquer Pine rosin Wood rosin... 

Julius Africanus mentioned shooting Powder , but its compn was not given 350 AD. Aeneus of Rome put sulfur, pitch, incense, pine-rosin, and tow (crude flax fibers) into an oval wooden container, ignited the mixture and threw it on the decks of enemy ships (Ref 66, p 12)... 

The Caliphate troops (Baghdad, Irak), when attacking Salonica (Greece), threw ceramic pots charged with a mixture of pitch, pine rosin, and quicklime over the heads of enemy troops to suffocate them (Ref 66, p 13)... 

The pyrolysis of pine rosin yields pine oil which has long been known (6) to contain large amounts of p-cymene (p-isopropyltoluene, bp, 177°C). We have prepared pine oil by dry distillation of commercial rosin and fractionated it at atmospheric pressure into 10° cuts. The NMR spectrum of the fraction boiling at 170°-180°C (Figure 9) shows that p-cymene is indeed the major constituent present. The NMR spectrum of pure p-cymene has been reported (7), and its signals are prominent in the spectrum of pine oil. The doublet at 1.22 8, with a coupling constant... 

Pentachlorophcnol Petroleum wax Phenolic rerint-Novalak resin Pine rosin Polyethylene resins Polystyrene tedns Polypropylene-maleic anhydride Potassium nitrate Resins... 

Inflammable Compounds. H. Schwart recommends the following mixtures as giving excellent results I. One part of pulverized sulphur is melted in warm water with 4 of yellow phosphorus Most of the water is then poured off and the fluid mixture rubbed intimately with 4 parts of dextrine gum. Now compound 45 parts of minium with H equivalent of nitric acid, dry the mixture, pulverize it, and add it gradually to the phosphorus mixture. The matches are saturated with solution of pine rosin in alcohol, and dried at a moderate heat. 

BC. Allied Navy of Sparta threw shells of sulfur, pitch and pine rosin by means of ballista to fire the Athenian Navy (Ref 66, p 11) 325 BC. Alexander the Great s troops which invaded India were defeated by means of thunder bolts thrown from the castle wall in Lahore by its. inhabitants called Oxydarace (Ref 66, pp4 11) Note Accdg to Greener (Ref 7, p 13), Alexander met with real fire-arms in India 249 BC. Spartans used incendiaries, consisting... 

CAS 8050-09-7 8052-10-6 EINECS/ELINCS 232-475-7 Synonyms Colophane Colophonium Cotophony Disproportionated rosin Gum rosin Pine rosin Resin Rosin gum Wood rosin Yellow pine... 

Yellow ferric oxide. See Ferric oxide Yellow lead ocher. See Lead oxide, yellow Yellow ochre. See Iron oxide yellow Yellow pine rosin. See Rosin Yellow resin. See Rosin Yellow ultramarine. See Calcium chromate Yellow wax. See Beeswax... 

Pine rosin Resin Rosin gum Wood rosin Yellow pine rosin Yellow resin... 

Regardless of its origin (gum, wood or tall oil), rosin is mainly composed (90-95 pa- cent) of diterpenic mono-carboxylic acids, commonly known as resin acids whose generic formula is C19H29COOH. The remaining components are essentially made up of neutral compounds, the nature of which depends on the specific origin of the rosin [5]. The most common resin acids found in pine rosin are derived from the three basic tricyclic carbon skeletons abietane, pimarane and isopimarane and the less common bicyclic labdane skeleton (Fig. 4.1). 

Hydrogenated methyl abietate n. C19H31COOCH3. A derivative of Abietic acid, which is extracted from pine rosin, used as a plasticizer for cellulose nitrate, ethyl cellulose, acrylic and vinyl resins, and polystyrene. 

Colophony (rosin, pine rosin, wood rosin) is obtained from various species of pine tree. It has a complex chemical composition, of which about 90% is resin acids and the rest is corresponding esters, aldehydes and alcohols. Two main types of acids occur abietic acid with conjugated double bonds and pimaric acid with non-conjugated double bonds. Colophony is not used alone as a drying resin but is used to modify other resins, such as alkyds. Colophony is an important contact sensitizer, but the esterification of organic acids in colophony with alcohol groups in alkyd resins reduces its allergenicity. Rosin esters can be used in paints and varnishes (Mathias 1984 Fischer and Adams 1990 Sadhra et al. 1994). See the chapter on colophony in this book. 

Synonyms disproportionated rosin gum rosin wood rosin pine rosin... 

Historically, pine sap—colophony, as it is referred to in older pubhcations— is the most notable natural product used as a flux. Once extracted from the tree, the pine rosin is purified and neutralized to remove excess acidity imparted by the extraction process and dissolved in alcohol. Termed water-white rosin, the key fluxing agents are a mixture of abietic and pimaric acids. Water-white used to be the basis for many commercial flux offerings. 

Fredrick Walton invents finoleum, comprised of linseed oil, pigments, pine rosin, and pine flour... 

Many plants produce defence secretions that form protective barriers when the structure of the plant is damaged and exposed to air. Examples include pine rosin and rubber. In some cases, the exudates contain antibacterial or antifungal components as is the case, e.g., with myrrh. This is the resin of the shrub Commiphora abyssinica that contains a number of such compounds including the eudesmane derivative (15). 

Usually these rosin oil blends are made strictly for use In the rubber industry. However, pine rosin and pine tar are commonly used by the adhesives industry. Also tall oil (byproduct from paper manufacture) Is used as a feedstock In destructive distillation to manufacture various fatty acid and rosin products. 

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