Turpentine
From Free net encyclopedia
| Turpentine | |
|---|---|
| Chemical name | Turpentine |
| Chemical formula | C10H16 (approximate) |
| Molecular mass | 136 g/mol (approximate) |
| CAS number | [8006-64-2] |
| Density | [0.85-0.87] g/cm3 (approximate) |
| Melting point | < −50 °C (approximate) |
| Boiling point | 150-170 °C (approximate) |
| SMILES | |
| Disclaimer and references |
Turpentine is a fluid obtained by the complex distillation of resin obtained from trees, mainly various species of pine (Pinus). It is composed of terpenes, mainly the monoterpenes alpha-pinene and beta-pinene. Alternative names are wood turpentine, spirit of turpentine, oil of turpentine and gum turpentine. It is also known colloquially as just turps, although this more often refers to turpentine substitute (or mineral turpentine). Boiling in large tubs takes place at 155 degrees Celsius to obtain turpentine oil.
Important pines for turpentine production include:
- Maritime Pine Pinus pinaster
- Aleppo Pine Pinus halepensis
- Masson's Pine Pinus massoniana
- Sumatran Pine Pinus merkusii
- Longleaf Pine Pinus palustris
- Loblolly Pine Pinus taeda
- Ponderosa Pine Pinus ponderosa
However, one of the earliest sources is thought to be the terebinth or turpentine tree (Pistacia terebinthus), a Mediterranean tree related to the pistachio.
Contents |
Medicinal uses
Turpentine has been used medically since ancient times.
- Applied externally to the affected areas, turpentine is a highly effective treatment for lice.
- Turpentine can be mixed with animal fat as a primitive chest rub for nasal and throat complaints. Some modern chest rubs still contain some turpentine (e.g., Vicks).
- Internal administration of turpentine is no longer common today, though it was once the preferred means of treating intestinal parasites. It has antiseptic and diuretic properties.
Industrial uses
The two primary uses of turpentine in industry are as a solvent and as a source of materials for organic synthesis.
As a solvent, turpentine is used for thinning oil-based paints, producing varnishes, and as a raw material for the chemical industry. Its industrial use as a solvent in industrialized nations have largely been replaced by the much cheaper turpentine substitutes distilled from crude oil.
Turpentine is also used as a source of raw materials in the synthesis of fragrant chemical compounds. Commercially used camphor, linalool, alpha-terpineol, and geraniol are all usually produced from alpha-pinene and beta-pinene, which are two of the chief chemical components of turpentine. These pinenes are separated and purified by distillation. The mixture of diterpenes and triterpenes that is left as residue after terpentine distillation is sold as rosin.
Turpentine is also added to many cleaning and sanitary products due to its antiseptic properties and its "clean scent".
Hazards
Turpentine is an organic solvent, and thus poses many of the same hazards as do other such substances. It can burn the skin and eyes, damage the lungs and respiratory system, as well as the central nervous system when inhaled, and cause renal failure when ingested, among other things. It is highly flammable.
External links
- Chemical Database: Turpentine (EnvironmentalChemistry.com)
- IPCS INCHEM Turpentine classification, hazard, and property table
- Gum naval stores: Turpentine and rosin from pine resin
- Turpentine produced in forced labor camps "Turpentine Camps" in the 30s and 40s aka "Debt Slavery"
- Florida State Archive photographs of turpentine camps and laborers
See also
da:Terpentin de:Terpentin es:Aguarrás eo:Terebinto fr:Essence de térébenthine nl:Terpentijn ja:テレビン油 no:Terpentin pl:Terpentyna ru:Скипидар fi:Tärpätti