resins Flashcards
The term is applied to more or less solid, amorphous products of complex chemical nature.
RESIN
They are usually formed in schizogenous ducts or cavities and are end product of metabolism.
RESIN
Physical property of resin
hard, transparent or translucent and upon heating it soften and finally melt
When Heated: Chemically, are complex mixtures of:
RESIN ACIDS
RESIN ALCOHOLS (Resinol)
RESIN PHENOLS (Resinotannols)
ESTERS
RESENES
It is a chemically inert compound
RESENES
Resins are insoluble in __
WATER
Resins are usually insoluble in ___
PETROLEUM SPIRITS
Resins are soluble in ___
ALCOHOL
CHLOROFORM
ETHERS
Some investigators believe, it is an oxidation products of ___.
TERPENES
Several Resins: used in Pharmacy and in Art:
GUAIAC
ROSIN
MASTIC
When separated and purified, they are
usually ____ that fuse readily when heated, after passing through a preliminary stage of softening.
BRITTLE, AMORPHOUS SOLID
On evaporation, these solutions deposit the resin as a ___
VARNISH-LIKE FILM
❑ Burn with characteristic, smoky flame.
RESINS
Resins Combinations
VOLATILE OILS
GUMS
OIL AND GUMS
BALSAMS
GLYCOSIDAL COMBINATION
Volatile Oils examples
OLEORESINS
• Copaiba, Mastic, Capsicum, Ginger,
Turpentine
Gums examples
Gum-Resins
• Gamboge
Oil and Gums examples
Oleo-gum resins
• Myrrh, Asafoetida, Olibanum
They are water-soluble carbohydrate derivatives; they can be separated from oleoresins rather easily.
GUMS