Synthetic Dye Flashcards
Synthetic dyes are sometimes known as
Coal Tar Dyes
synthetic dye are derived from the hydro-carbon benzene (C6H6), and are collectively known as
aniline dyes
substances with definite atomic groupings and are capable of producing visible colors
Chromophores
Simple benzene compounds which contain such substances are known as
chromogens
auxiliary radical or substance which imparts to the compound the property of electrolytic dissociation
auxochrome
classification of chromophore
Acidic dye
Basic dye
Neutral dye
active coloring substance is found in the acid component
acidic dye
inactive base of acidic dye is
sodium salt of a sulfonate of rosaniline
example of acidic dye
picric acid
only substance so far that can fix, differentiate and stain tissue all by itself
picric acid
used as a fixative, as a decalcifying agent, or as a tissue softener
picric acid
basic cell structure are regarded as
acidophilic
active coloring substance is found in a basic component that combines with the acid radical
basic dyes
example of basic dye
methylene blue
this may be used both as an indicator and as a dye; widely used in microbiology for bacterial staining.
methylene blue
