Definition

Noun: 1. A synthetic dye: Saffranine refers to any of a group of synthetic chemical compounds primarily used as red or pink dyes and biological stains. 2. A class of dyes: It denotes a specific category of organic dyes characterized by their chemical structure and color properties.

Usage and Examples

• As a laboratory reagent:
  • The microbiologist used saffranine as a counterstain to differentiate bacterial cells under the microscope.
  • A drop of saffranine solution was added to the slide to enhance the contrast of the tissue sample.
• In industrial contexts:
  • This particular saffranine is valued in the textile industry for its affinity for cotton fibers.
  • Early synthetic dyes like saffranine revolutionized the production of colored fabrics.

Advanced Usage

• "Saffranine O": This is the most common and specific member of the saffranine dye class, frequently used in biological staining (e.g., Gram staining, spore staining) and as a redox indicator in chemistry.
  • The protocol specifies using a 0.5% aqueous solution of Saffranine O for the final staining step.

Variants and Related Words

• Safranin (noun): A common alternative spelling for saffranine.
  • The terms 'safranin' and 'saffranine' are often used interchangeably in laboratory manuals.
• Safranine (noun): Another accepted spelling variant.

Synonyms

• Biological stain: A substance used to color cells or tissues for microscopic examination.
• Cationic dye: A type of dye with a positive charge, which is the chemical class saffranine belongs to.
• Azine dye: Refers to the broader chemical family of dyes that includes saffranines.

Noun

1. any of a class of chiefly red organic dyes