Terpentin Chemische Eigenschaften,Einsatz,Produktion Methoden
Chemische Eigenschaften
Balsam turpentine is the oleo-gum-resin obtained by incisions made on the trunks of several trees belonging to the
genus Pinus. The common American turpentine comes from P. palustris. Crude turpentine contains 75 to 90% resin and 10 to 25%
oil. It is of paramount importance to use special techniques in making incisions, because the tree otherwise may die in a short time.
A gum (gum turpentine) consisting of white incrustations is formed around the incisions in the tree. Rosin is the resinous residue of
the distillation of turpentine. There are several varieties of rosin, varying in color from the palest amber to nearly black and from
translucent to opaque, depending on the turpentine source. Colophony is the name of the common rosin variety. The part used is the
oleo-gum-resin (turpentine balsam). Turpentine has a penetrating and characteristic odor and a pungent, bitter taste.
Physikalische Eigenschaften
Turpentine is a clear, flammable liquid, with a pungent odor and a bitter taste. It is immiscible with water and has a boiling point above 150 °C. Turpentine is a mixture of organic compounds, mainly terpenes, and its composition can vary considerably according to the species of pine from which it is derived. Fractional distillation of turpentine allows the isolation of α-pinene and β-pinene.
Verwenden
Turpentine is a mixture of substances called terpenes, primarily pinene. Gum turpentine is extracted from pine pitch; wood turpentine, from wood chips. It has had greater home than industrial use as a solvent. It is irritating and anesthetic and is one of the few solvents that causes allergic contact dermatitis. The incidence of sensitization varies with the type of pine, being generally higher with European than American pines. Owing to the frequency of allergic dermatitis, the availability of turpentine is now extremely limited. One recent study suggested that occupational paternal exposure to turpentine was associated with neuroblastoma in offspring.
Definition
A
yellow viscous resin obtained from coniferous trees. It can be distilled to produce turpentine oil (also known simply as
turpentine), used in medicine and as a solvent in paints, polishes, and varnishes.
Health Hazard
Recommended Personal Protective Equipment: Organic canister or air-supplied mask; goggles or face shield; rubber gloves; Symptoms Following Exposure: Vapors cause headache, confusion, respiratory distress. Liquid irritates skin. If ingested, can irritate the entire digestive system and may injure kidneys. If liquid is taken into lungs, causes several pneumonitis; General Treatment for Exposure: INHALATION: remove victim to fresh air; call a doctor; administer artificial respiration and oxygen if required. INGESTION: give water and induce vomiting; call a doctor. EYES: flush with water for at least 15 min. SKIN: wipe off, wash with soap and water; Toxicity by Inhalation (Threshold Limit Value): 100 ppm; Short-Term Exposure Limits: 200 ppm for 30 min.; Toxicity by Ingestion: Grade 2, LD50 = 0.5-5 g/kg; Late Toxicity: None; Vapor (Gas) Irritant Characteristics: Vapor causes a slight smarting of the eyes or respiratory system if present in high concentration. The effect is temporary; Liquid or Solid Irritant Characteristics: Minimum hazard. If spilled on clothing and allowed to remain, may be cause smarting and reddening of the skin; Odor Threshold: Data not available.
Chemische Reaktivit?t
Reactivity with Water No reaction; Reactivity with Common Materials: No reactions; Stability During Transport: Stable; Neutralizing Agents for Acids and Caustics: Not pertinent; Polymerization: Not pertinent; Inhibitor of Polymerization: Not pertinent.
Terpentin Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
