safranine

saf·ra·nin

S5020300 (săf′rə-nĭn) also saf·ra·nine (-nēn′, -nĭn)n. Any of a family of dyes based on phenazine, used chiefly as biological stains.

[French safran, saffron (from Old French; see saffron) + -in.]

safranine

(ˈsæfrənɪn; -ˌniːn) or

safranin

n (Dyeing) any of a class of azine dyes, used for textiles and biological stains[C19: from French safran saffron + -ine²]

saf•ra•nine

(ˈsæf rəˌnin, -nɪn)

also saf•ra•nin

(-nɪn)

n. 1. any of a class of chiefly red organic dyes. 2. a purplish red, water-soluble dye, C₁₈H₁₄N₄, used for textiles and as a stain in microscopy. [1865–70; < French or German safran saffron + -ine -ine²]

Thesaurus

Noun

safranine - any of a class of chiefly red organic dyessaffranine, safranindye, dyestuff - a usually soluble substance for staining or coloring e.g. fabrics or hairpheno-safranine - a purplish red water-soluble dye used in microscopy

Safranine

safranine

[′saf·rə‚nēn] (organic chemistry) Any of a group of phenazine-based dyes; some are used as biological stains.

Safranine

any of a class of azine dyes. The simplest safra-nine is phenosafranine, with the structural formula

where R₁ = NH₂ and R₂ = R₃ = R₄ = H. Phenosafranine is a red dye formed in small quantities upon the oxidation of a mixture of aniline and p-phenylenediamine. It has very few uses.

Tolusafranine, referred to commercially as safranine (R₁ = NH₂; R₂ = R₄ = CH₃; R₃ = H), is a bright red basic dye. It is formed upon the oxidation of a mixture of aniline, o-toluidine, and p-tolylenediamine. Tolusafranine was used until the 1940’s as a dye for leather, paper, and textiles. Today, it has been almost completely replaced by dyes that are less expensive and more colorfast.

Pinakryptol (R₁ = R₂ = R₄ = H; R₃ = NH₂) is a green dye obtained by the action on o-aminodiphenylamine of, first, picryl chloride and second, zinc with hydrochloric acid. It is used as a desensitizer in photography for lowering the sensitivity of photographic plates. All safranines are toxic.

M. A. CHEKALIN

safranine

saf·ra·nin

safranine

safranin

saf•ra•nine

also saf•ra•nin

Safranine

safranine

Safranine

safranine

saf·ra·nine

safranine

Synonyms for safranine

noun any of a class of chiefly red organic dyes

Synonyms

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