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FEMA 2795

FEMA 2795 Struktur
9000-50-4
CAS-Nr.
9000-50-4
Englisch Name:
FEMA 2795
Synonyma:
Mousse;OAKMOSS;FEMA 2795;Oakmossoil;Oakmossresin;Mousse Chene;Fema no. 2795;MoussedeChene;Oakmossresinoid;Oakmossabsolute
CBNumber:
CB6166869
Summenformel:
Molgewicht:
0
MOL-Datei:
Mol file

FEMA 2795 Eigenschaften

FEMA 
2795 | OAKMOSS ABSOLUTE (EVERNIA SPP.)
Farbe
A green to brownish-green semi-solid or viscous liquid. The chief volatile constituents are α- and /β-thujone
Geruch (Odor)
at 100.00 %. sweet green quinoline grassy oily
Geruchsart
green
EPA chemische Informationen
Oils, oakmoss-resinoid (9000-50-4)
Sicherheit
  • Risiko- und Sicherheitserkl?rung
  • Gefahreninformationscode (GHS)
Toxizit?t The actual oral LD50 in rats was reported as 2.9 (2.6-3.2 g/kg), while the acute dermal LD50 in rabbits exceeded 5 g/kg (Moreno, 1972).
Bildanzeige (GHS) GHS hazard pictograms
Alarmwort Warnung
Gefahrenhinweise
Code Gefahrenhinweise Gefahrenklasse Abteilung Alarmwort Symbol P-Code
H317 Kann allergische Hautreaktionen verursachen. Sensibilisierung der Haut Kategorie 1A Warnung GHS hazard pictogramssrc="/GHS07.jpg" width="20" height="20" /> P261, P272, P280, P302+P352,P333+P313, P321, P363, P501
Sicherheit
P261 Einatmen von Staub vermeiden.
P272 Kontaminierte Arbeitskleidung nicht au?erhalb des Arbeitsplatzes tragen.
P280 Schutzhandschuhe/Schutzkleidung/Augenschutz tragen.
P302+P352 BEI BERüHRUNG MIT DER HAUT: Mit viel Wasser/... (Hersteller kann, falls zweckm??ig, ein Reinigungsmittel angeben oder, wenn Wasser eindeutig ungeeignet ist, ein alternatives Mittel empfehlen) waschen.
P321 Besondere Behandlung
P333+P313 Bei Hautreizung oder -ausschlag: ?rztlichen Rat einholen/?rztliche Hilfe hinzuziehen.
P363 Kontaminierte Kleidung vor erneutem Tragen waschen.
P501 Inhalt/Beh?lter ... (Entsorgungsvorschriften vom Hersteller anzugeben) zuführen.

FEMA 2795 Chemische Eigenschaften,Einsatz,Produktion Methoden

Beschreibung

Various lichens belonging to the class Cryptogamia; they grow under cool, damp conditions on the trunks and branches of trees such as oak and fir. The lichens are used to prepare resinoids and concrete and absolute essences for a total yearly consumption of approximately 70 tons.
E. prunastri, the true oak moss, grows on the trunks and branches of oak trees. Like all ascolichens, the moss reproduces by fragmentation of soredia and grows by symbiosis yielding an erect, bushy, vegetative form. Other related lichen-E. furfuracea and Usnea barbata-that grow on spruces and firs are known by the more generic name of tree moss. Oak moss derivatives are light green and exhibit a rich odor, while tree moss derivatives have a grayish-green color and a slight resinous odor. E. prunastri yields the most valuable extraction products, while other tree mosses yield products of inferior quality. Oak moss is harvested mainly in France, Yugoslavia, Italy, Morocco, and Hungary. The harvested moss is pressed into bails and shipped to the extractive sites. The part used is the lichen. Oak moss has a delicate, pleasant, green, moss-like odor.
An essential oil can be obtained by steam distillation of the lichen; however, this product is of little commercial importance because of the very low yields (0.07%). Usually oak moss concrete and oak moss absolute are steam distilled, preferably under reduced pressure. Main constituents of the ether-extracted concrete include evernic acid, orcinol, phenols, acids (formic, acetic, stearic, palmitic, and oleic), α- and P-thujone, camphor, bomeol, cineol, naphthalene, ketones, terpene alcohols, and traces of vanillin.
.

Chemische Eigenschaften

Tree moss concretes and absolutes are prepared from Pseudevernia furfuracea (L.) Zopf (syn. Evernia furfuracea (L.) Mann; Parmelia furfuracea (L.) Arch.), a lichen growing on barks of Pinaceae, for example, on Cedrus species in Morocco. Their odors are different from those of the corresponding oakmoss products.
The extracts and absolutes are used in perfumery for nuances and as a fixative to give compositions a dry, sweet base note, for example, in fougére and chypre perfumes. Allergenic responses to oakmoss and tree moss products are probably caused by aromatic aldehydes such as atranorin and chloroatranorin and the corresponding products formed during the workup process as a result of transesterification and decarboxylation reactions, for example, ethyl hemmatomate, ethyl chlorohemmatomate, atranol, and chloroatranol.
Methods to obtain oakmoss and treemoss products of low allergenic properties have been reported. Treemoss extracts may also contain constituents that possibly cause allergenic reactions. As tree moss grows on conifers, it may be contaminated with some conifer rosin. This rosin usually contains resinic acids (abietic acid and similar constituents), which are known to be allergenic substances. Tree moss products free of these resinic acids can be obtained by treatment with selected solvents.

Physikalische Eigenschaften

The absolute is a dark-green liquid.

Occurrence

Found in the lichen, E. prunastri (L.) Ach. (Fam. Usneaceae), which occurs on the trunks of oak trees (Guenther, 1952; Naves, 1974).

Verwenden

Oak moss absolute is an extract of oak moss. Extract made mainly from Evernia prunastri (oak moss) and Pseudevernia furfuracea (tree moss). Oak moss concrete is prepared by hydrocarbon solvent extraction of the lichen Evernia Prunastri, collected mainly from oak trees in Yugoslavia, France, Italy, Corsica, Morocco, Hungary, and various central European countries. Contains atranorin, evernic acid and usnic acid.

synthetische

By solvent extraction of E. prunastri; the solvent is evaporated and removed, usually under vacuum, and the resultant product is normally dispersed in benzyl benzoate or a similar diluent to facilitate handling. Commercially available oakmoss preparations are frequently compounded products (Chatelain, 1953).

Essential oil composition

Extract of lichen contains camphor, α- and β-thujone, depsides, orcinol, sparassol, atranol, divarine and other monaryl derivatives of depsides.

FEMA 2795 Upstream-Materialien And Downstream Produkte

Upstream-Materialien

Downstream Produkte


FEMA 2795 Anbieter Lieferant Produzent Hersteller Vertrieb H?ndler.

Global( 63)Lieferanten
Firmenname Telefon E-Mail Land Produktkatalog Edge Rate
Zhengzhou Alfa Chemical Co.,Ltd
+8618530059196
sale04@alfachem.cn China 13552 58
Hebei Yanxi Chemical Co., Ltd.
+8617531190177
peter@yan-xi.com China 5857 58
Career Henan Chemica Co
+86-0371-86658258 +8613203830695
laboratory@coreychem.com China 30241 58
ANHUI WITOP BIOTECH CO., LTD
+8615255079626
eric@witopchemical.com China 23541 58
Dideu Industries Group Limited
+86-29-89586680 +86-15129568250
1026@dideu.com China 22883 58
LUYUNJIA CHEMISTRY XIAMEN LIMITED
+86-592-5360779 +86-13055435203
China 5988 58
Hebei Kingfiner Technology Development Co.Ltd
+86-15532196582 +86-15373005021
lisa@kingfinertech.com China 2990 58
Xiamen Eagle Chemical Limited Corporation
+86-5925023701 +86-18900207489
yiyunchem@163.com China 6040 58
Shenzhen Sendi Biotechnology Co.Ltd. 0755-23311925 18102838259
Abel@chembj.com CHINA 3191 55
Shenzhen Sendi Biological Technology Co., Ltd. 18124570582 TEL:0755-23574479 2355327139
siliao02@yccreate.com China 6116 58

9000-50-4()Verwandte Suche:


  • Oils,oakmoss-resinoid
  • FEMA 2795
  • OAKMOSS
  • OAKMOSS ABSOLUTE RESIN
  • OAKMOSS CONCRETE BROWN MAROC
  • OAKMOSS CONCRETE GREEN MAROC
  • OAKMOSS OLIFFAC 924
  • OAKMOSS ABSOLUTE RESIN - FLAVOR & FRAGRANCE GRADE
  • OAKMOSS ABSOLUTE RESIN - FRAGRANCE GRADE
  • Fema no. 2795
  • Oakmoss absolute (evernia spp.)
  • Oakmoss concrete (evernia prunasti spp.)
  • Oakmossresin
  • Oakmossresinoid
  • Mousse Chene
  • Mousse
  • MoussedeChene
  • Oakmoss,absolute
  • Oakmoss,concrete
  • Oakmossabsolute
  • OakmossLA,colourlessMD
  • Oakmossoil
  • FEMA 2795 USP/EP/BP
  • 9000-50-4
  • 977059-15-6
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