Ponceau colorants: Difference between revisions
Jump to navigation
Jump to search
No edit summary |
No edit summary |
||
| Line 1: | Line 1: | ||
== Description == | == Description == | ||
Scarlet red synthetic dyes first made in 1878 by a secret process developed by Brooke, Simpson, and Spiller. Ponceau colorants were used to dye [[wool]] and [[silk]] without a [[mordant]]. These azo dyes were formerly used for coloring maraschino cherries prior to being removed from the FDA approved list for food in 1976. | Scarlet red synthetic dyes first made in 1878 by a secret process developed by Brooke, Simpson, and Spiller. Ponceau colorants were used to dye [[wool]] and [[silk]] without a [[mordant]]. These water-soluble azo dyes were formerly used for coloring maraschino cherries prior to being removed from the FDA approved list for food in 1976. | ||
* Ponceau 2R; Acid Red 26, CI 16150; also called Xylidine ponceau or Ponceau G, among other synonyms), azo dye used in histology for staining | * Ponceau 2R; Acid Red 26, CI 16150; also called Xylidine ponceau or Ponceau G, among other synonyms), azo dye used in histology for staining | ||
* Ponceau 3R: discontinued | * Ponceau 3R: discontinued | ||
* Ponceau 4R: Acid Red 18; CI 16255; Pigment Red 274; synthetic | * Ponceau 4R: Acid Red 18; CI 16255; Pigment Red 274; A synthetic crimson dye often used as a food coloring, but no allowed in US Canada or Japan | ||
* Ponceau 6R: Acid Red 44, CI 16250; Crystal ponceau 6R, among other synonyms), food dye (E number E126) and histology stain | * Ponceau 6R: Acid Red 44, CI 16250; Crystal ponceau 6R, among other synonyms), food dye (E number E126) and histology stain | ||
* Ponceau S: Acid Red 112, CI 27195; | * Ponceau S: Acid Red 112, CI 27195; Scarlet GN; A disazo dye used for histological staining | ||
* Ponceau SX: another name for Scarlet GN, once used as a food dye (E number E125) | * Ponceau SX: another name for Scarlet GN, once used as a food dye (E number E125) | ||
| Line 19: | Line 19: | ||
* Slightly soluble in alcohols. | * Slightly soluble in alcohols. | ||
* Insoluble in oils. | * Insoluble in oils. | ||
* High resistance to heating good lightfastness. | |||
==Resources and Citations== | ==Resources and Citations== | ||
Revision as of 17:26, 28 April 2026
Description
Scarlet red synthetic dyes first made in 1878 by a secret process developed by Brooke, Simpson, and Spiller. Ponceau colorants were used to dye wool and silk without a mordant. These water-soluble azo dyes were formerly used for coloring maraschino cherries prior to being removed from the FDA approved list for food in 1976.
- Ponceau 2R; Acid Red 26, CI 16150; also called Xylidine ponceau or Ponceau G, among other synonyms), azo dye used in histology for staining
- Ponceau 3R: discontinued
- Ponceau 4R: Acid Red 18; CI 16255; Pigment Red 274; A synthetic crimson dye often used as a food coloring, but no allowed in US Canada or Japan
- Ponceau 6R: Acid Red 44, CI 16250; Crystal ponceau 6R, among other synonyms), food dye (E number E126) and histology stain
- Ponceau S: Acid Red 112, CI 27195; Scarlet GN; A disazo dye used for histological staining
- Ponceau SX: another name for Scarlet GN, once used as a food dye (E number E125)
Synonyms and Related Terms
ponceaux; Ponceau 2R; Ponceau SX; Ponceau 4R; Ponceau 6R
Physical and Chemical Properties
- Soluble in water.
- Slightly soluble in alcohols.
- Insoluble in oils.
- High resistance to heating good lightfastness.
Resources and Citations
- Wikipedia: Ponceau