China (Mainland)
Supply high quality FEMA 2795(9000-50-4) CAS NO.9000-50-4
- Min.Order: 1 Gram
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- ProName: Supply high quality FEMA 2795(9000-50...
- CasNo: 9000-50-4
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- DeliveryTime: Three days later
- PackAge: customer demand
- Port: Shanghai or Qingdao
- ProductionCapacity: 50 Kilogram/Month
- Purity: 94%~99%
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- Transportation: by sea or by air
- LimitNum: 1 Gram
- Product Name:: FEMA 2795
- CAS:: 9000-50-4
Superiority
Henan CoreyChem Co., Ltd, facing global High-tech pharmaceutical raw materials, high value-added new type intermediates fine chemicals custom synthesis, scale-up production and rare chemicals trade. We have experienced research staff, strong technical force, well-equipped machine, and considerate marketing team service, with a strict customer intellectual property security system, we are already become good partner of customers from difficult and complex chemical and biological chemical field. Our high quality & low price and effective services shortened new product development cycle,reduced the development and production cost for numerous partners.
The company has completed numerous domestic and overseas famous pharmaceutical, chemical, biological and other large and medium-sized company R&D outsourcing services, synthesis process development and optimization services, chemical intermediates customized service, special chemical processing and production services, etc., We hope to become continuous mutually beneficial partnership with you, to create a better business opportunities together.
Details
| Product Name: | FEMA 2795 |
| Synonyms: | Mousse Chene;Mousse;MoussedeChene;Oakmoss,absolute;Oakmoss,concrete;Oakmossabsolute;Oils,oakmoss-resinoid;FEMA 2795 |
| CAS: | 9000-50-4 |
| MF: | |
| MW: | 0 |
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| Product Categories: | |
| Mol File: | Mol File |
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| FEMA 2795 Chemical Properties |
| FEMA | 2795 | OAKMOSS ABSOLUTE (EVERNIA SPP.) |
| Safety Information |
| FEMA 2795 Usage And Synthesis |
| Description |
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. . |
| Chemical Properties | As stated above, the absolute is obtained by alcoholic extraction of the concrete. Extraction requires approximately 5 hours. |
| Chemical Properties |
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. |
| Physical properties | The absolute is a dark-green liquid. |
| Essential oil composition | Extract of lichen contains camphor, α- and β-thujone, depsides, orcinol, sparassol, atranol, divarine and other monaryl derivatives of depsides. |
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