Copaiba

With cedar-wood and copaiba oils, the high boiling fractions arc. fonnd 10 have very high refractive Indices (op lo I lflflf) or even L/iOflj, and in llie case of. African copaiha. cadiuene is found in the fraction 305 Is, tho oorrospouding fraction may he... 

Other samples oI Urlcati copaiba oil had Ihe following cbaractci S... 

The principal adiili -ratioas of copaiba sad Its oil are the correspoading haUaniS and oils knowm us. African copaiba (probably obtained from O.n/stiqnui Mannii and gurjun balsam). 

This sesquiterpene, or mixture of sesquiterpenes, is found to a considerable extent in nature, especially in clove oil, pimento oil, pepper oil, cinnamon oil, betel oil, copaiba oil, and numerous other essential oils. As isolated from these oils the sesquiterpene has the following characters —... 

Plastrit or piastrotyl. Plastic expls patented in 1906 by C.E. Bichel. They were prepd by mixing 85—87p of TNT with liq and/or solid resins (such as copaiba, balsam, benzoin gum, styrax, turpentine, etc), and collodion cotton, with or without liq DNT Refs 1) Colver (1918), 249 2) PATR 2510... 

Although the mass spectra of aged diterpenoid resins are generally not characteristic enough for a clear identification, some natural products show characteristic peaks above m/z 325. These signals can be explained by particular constituents of the respective resins, so-called biomarkers. For example, copaiba balsam shows an intense peak at m/z 385, which can be attributed to 3-acetoxy-copaiferic acid [51] (see Figure 5.11). Another... 

Figure 5.11 GALDI mass spectrum of copaiba balsam. The most intense peak (m/z 385) can be attributed to 3 acetoxy copaiferic acid...

I.D. Van der Werf, K.J. van den Berg, S. Schmidt, and J.J. Boon, Molecular Characterization of Copaiba Balsam as Used in Painting Techniques and Restoration Procedures, Stud. Conserv., 45, 1 18(2000). 

Py-GC/MS characterisation of diterpenoid resins using online trimethilsilylation with HMDS has been performed on fresh Pinaceae resins, manila Copal, sandarac, and Copaiba... 

Copaiba (balsam) oils are obtained by steam distillation of the exudate (balsam) from the trunk of several species of Copaifera L. (Fabaceae), a genus of trees growing in the Amazon basin. They are colorless to light yellow liquids with the characteristic odor of the corresponding balsams and an aromatic, slightly bitter, pungent taste. 

Balsam of copaiba, nine ounces lamp-black, three ounces Indigo and Prussian blue, ground together in equal proportions, one and a quarter ounce Indian red, throe-fburths of au ounce thy, yellow turpentine soap, three ounces r this mixture Is to be ground, by means of a slab and mullor, to an impalpable smoothness, It is stated that this iuk possesses a beautiful color, but appears to work foul. 

Those wliich yield a volatile oil on being distilled with water, aud leave an add resin, or rather several resins possessed of add properties, in tlio retort. To this class belong the several turpentine resins, balsam of copaiba, et cetera,... 

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