Мирцен

Описание

Myrcene has a pleasant odor. Prepared from linalool.

Химические свойства

Myrcene has a pleasant, sweet, balsamic, plastic odor.

Вхождение

Reported found in Mircia acris D.C.; in the distillates from leaves of Rhus cotinus and Barosma venustum (52 and 43%, respectively); in lemongrass, cypress, artemisia; in the fruits of Phellodendron amurense (92%) and Phellodendron japonicum; in the oils of Picea balsamea, Tsuga canadenis, Abies balsamea, clary sage and others. Also reported in over 200 foods and beverages including citrus peel oils and juices, apricot, sweet and sour cherry, berries, guava, pineapple, carrot, celery, potato, bell pepper, black currants, anise, anise seed, cardamom, cinnamon, cassia, clove, capsicum varities, ginger, mentha oils, mace, parsley, thyme, cheeses, cream, pork, hop oil, beer, white wine, rum, cocoa, coffee, tea, mango, tamarind, coriander, gin, sweet bay, prickly pear, calamus, dill, lovage, caraway, buckwheat, corn, basil, fennel, kiwifruit, rosemary, myrtle berry, turmeric, lemon balm, sage, pimento, angelica oil, Roman and German chamomile oil, eucalyptus and mastic gum oil

Использование

Myrcene is the suitable synthetic standard used in the identification of E-myrcenol (2-methyl-6-methylene-E-2,7-octadien-1-01) as a major hindgut constituent in Eurasian bark beetle Ips duplicatus by GC-MS.

Подготовка

From linalool

Определение

ChEBI: A monoterpene that is octa-1,6-diene bearing methylene and methyl substituents at positions 3 and 7 respectively.

Общее описание

A yellow oily liquid with a pleasant odor. Flash point below 200°F. Insoluble in water and less dense than water.

Реакции воздуха и воды

Insoluble in water.

Профиль реактивности

The unsaturated aliphatic hydrocarbons, such as MYRCENE, are generally much more reactive than the alkanes. Strong oxidizers may react vigorously with them. Reducing agents can react exothermically to release gaseous hydrogen. In the presence of various catalysts (such as acids) or initiators, compounds in this class can undergo very exothermic addition polymerization reactions. Many of these compounds undergo autoxidation upon exposure to the air to form explosive peroxides. Violent explosions have occurred at low temperatures in ammonia synthesis gas units. These explosions have been traced to the addition products of dienes and oxides of nitrogen, produced from the interaction of nitrogen oxide and oxygen [Bretherick, 1995].

Угроза здоровью

May be harmful by inhalation, ingestion or skin absorption.

Пожароопасность

Special Hazards of Combustion Products: Vapor may travel considerable distance to a source of ignition and flashback.

Профиль безопасности

Low toxicity by ingestion and skin contact. Experimental reproductive effects. A moderate skin and eye irritant. A flammable liquid. When heated to decomposition it emits acrid smoke and irritating fumes.

Синтез

Myrcene occurs naturally in many organisms, but its extraction is uneconomic; it is produced industrially by pyrolysis of b-pinene. The fragmentation of linalool and linalyl acetate and the catalytic dimerization of isoprene have been described as laboratory synthesis methods of myrcene.