Alizarin

Source: Wikipedia, the free encyclopedia.
"Madder lake" redirects here. For the Australian band, see
Madder Lake (band)
.
Alizarin
Ball-and-stick model of alizarin
Names
Preferred IUPAC name
1,2-Dihydroxyanthracene-9,10-dione
Other names
1,2-Dihydroxy-9,10-anthracenedione[1]
1,2-Dihydroxyanthraquinone
Turkey red
Mordant red 11
Alizarin B
Alizarin red
Identifiers
3D model (
JSmol
)
3DMet
1914037
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard
 100.000.711 Edit this at Wikidata
34541
KEGG
UNII
  • InChI=1S/C14H8O4/c15-10-6-5-9-11(14(10)18)13(17)8-4-2-1-3-7(8)12(9)16/h1-6,15,18H checkY
    Key: RGCKGOZRHPZPFP-UHFFFAOYSA-N checkY
  • InChI=1/C14H8O4/c15-10-6-5-9-11(14(10)18)13(17)8-4-2-1-3-7(8)12(9)16/h1-6,15,18H
    Key: RGCKGOZRHPZPFP-UHFFFAOYAG
  • O=C2c1ccccc1C(=O)c3c2ccc(O)c3O
Properties
C14H8O4
Molar mass 240.214 g·mol−1
Appearance orange-red crystals or powder
Density 1.540 g/cm3
Melting point 289.5 °C (553.1 °F; 562.6 K)[1]
Boiling point 430 °C (806 °F; 703 K)
slightly to sparingly soluble
Acidity (pKa) 6.94
Hazards
GHS labelling:
GHS07: Exclamation mark
Warning
H302, H315, H319
P264, P270, P280, P301+P312, P302+P352, P305+P351+P338, P321, P330, P332+P313, P337+P313, P362, P501
Safety data sheet (SDS) External MSDS
Related compounds
Related compounds
 anthraquinone, anthracene
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
checkY verify (what is checkY☒N ?)

Alizarin (also known as 1,2-dihydroxyanthraquinone, Mordant Red 11, C.I. 58000, and Turkey Red[2]) is an organic compound with formula C
14H
8O
4 that has been used throughout history as a prominent red dye, principally for dyeing textile fabrics. Historically it was derived from the roots of plants of the madder genus.[3] In 1869, it became the first natural dye to be produced synthetically.[4]

Alizarin is the main ingredient for the manufacture of the madder lake pigments known to painters as rose madder and alizarin crimson. Alizarin in the most common usage of the term has a deep red color, but the term is also part of the name for several related non-red dyes, such as Alizarine Cyanine Green and Alizarine Brilliant Blue. A notable use of alizarin in modern times is as a staining agent in biological research because it stains free calcium and certain calcium compounds a red or light purple color. Alizarin continues to be used commercially as a red textile dye, but to a lesser extent than in the past.

History

Madder has been cultivated as a

redcoats
".

color

The madder dyestuff is combined with a dye mordant. Depending on which mordant is used, the resulting color may be anywhere from pink through purple to dark brown. In the 18th century, the most valued color was a bright red known as "Turkey Red". The combination of mordants and overall technique used to obtain the Turkey Red originated in the Middle East or Turkey (hence the name). It was a complex and multi-step technique in its Middle Eastern formulation, some parts of which were unnecessary.[8] The process was simplified in late 18th-century Europe. By 1804, dye maker George Field in Britain had refined a technique to make lake madder by treating it with alum, and an alkali,[9] that converts the water-soluble madder extract into a solid, insoluble pigment. This resulting madder lake has a longer-lasting color, and can be used more efficaciously, for example by blending it into a paint. Over the following years, it was found that other metal salts, including those containing iron, tin, and chromium, could be used in place of alum to give madder-based pigments of various other colors. This general method of preparing lakes has been known for centuries[10] but was simplified in the late 18th and early 19th centuries.

In 1826, the

William Henry Perkin independently discovered the same synthesis, although the BASF group filed their patent before Perkin by one day. The subsequent discovery (made by Broenner and Gutzhow in 1871) that anthracene could be abstracted from coal tar further advanced the importance and affordability of alizarin's artificial synthesis.[14]

The synthetic alizarin could be produced for a fraction of the cost of the natural product, and the market for madder collapsed virtually overnight. The principal synthesis entailed bromination of anthraquinone by bromine (in a sealed tube at 100 oC) to give 1,2-dibromoanthraquinone. Then the two bromine atoms were substituted by -OH by heating (170 oC) with KOH, followed by treatment with strong acid.[15] The incorporation of two bromine atoms in 1 and 2 position is not expected by an aromatic electrophilic substitution, and suggest the existence of an α,β unsaturated enol form of anthraquinone which suffer electrophilic addition by bromine.

Alizarin, as a dye, has been largely replaced today by the more light-resistant quinacridone pigments developed at DuPont in 1958.

Structure and properties

quinizarin, is an isomer of alizarin.[4][16]

Alizarin is one of ten dihydroxyanthraquinone isomers. It is soluble in hexane and chloroform, and can be obtained from the latter as red-purple crystals, melting point 277–278 °C.[3]

Alizarin changes color depending on the pH of the solution it is in, thereby making it a pH indicator.[17]

Applications

Alizarin Red is used in a biochemical assay to determine, quantitatively by colorimetry, the presence of calcific deposition by cells of an osteogenic lineage. As such it is an early stage marker (days 10–16 of in vitro culture) of matrix mineralization, a crucial step towards the formation of calcified extracellular matrix associated with true bone.[citation needed]

Alizarin's abilities as a biological stain were first noted in 1567, when it was observed that when fed to animals, it stained their teeth and bones red. The chemical is now commonly used in medical studies involving calcium. Free (ionic) calcium forms precipitates with alizarin, and tissue block containing calcium stain red immediately when immersed in alizarin. Thus, both pure calcium and calcium in bones and other tissues can be stained. These alizarin-stained elements can be better visualized under fluorescent lights, excited by 440–460 nm.[18] The process of staining calcium with alizarin works best when conducted in acidic solution (in many labs, it works better in pH 4.1 to 4.3).[19]

In clinical practice, it is used to stain synovial fluid to assess for basic calcium phosphate crystals.[20] Alizarin has also been used in studies involving bone growth, osteoporosis, bone marrow, calcium deposits in the vascular system, cellular signaling, gene expression, tissue engineering, and mesenchymal stem cells.[19]

In

minerals, especially calcite and aragonite in thin section or polished surfaces.[21][22]

Madder lake had been in use as a red pigment in paintings since antiquity.[23]

  • Red alizarin staining of rat's embryonic bones for osteogenesis study
    Red alizarin staining of rat's embryonic bones for osteogenesis study
  • Red alizarin stained juvenile Roosterfish (Nematistius pectoralis) lit by fluorescent light. [24]
    Red alizarin stained juvenile Roosterfish (Nematistius pectoralis) lit by fluorescent light. [24]
  • Johannes Vermeer, Christ in the House of Martha and Mary, 1654-56. The red jacket worn by Mary is painted in madder lake
    Johannes Vermeer, Christ in the House of Martha and Mary, 1654-56. The red jacket worn by Mary is painted in madder lake
  • Reconstruction blankets dyed with madder
    Reconstruction blankets dyed with madder

See also

References

  1. ^
    ISBN 9781498754293
    .
  2. ^ SigmaAldrich Catalog: Alizarin
  3. ^
    doi:10.1016/j.dyepig.2006.08.023
    .
  4. ^
    ISBN 978-3527306732
    .
  5. JSTOR 43475067
    . Retrieved February 13, 2021.
  6. JSTOR 500972
    . Retrieved February 13, 2021.
  7. ^ Many examples of the use of the word "madder", meaning the roots of the plant Rubia tinctorum used as a dye, are given in the Middle English Dictionary, a dictionary of late medieval English.
  8. ISBN 9780231503693. Additional 18th century history at "Turkey Red Dyeing in Blackley - The Delaunay Dyeworks"
    . ColorantsInHistory.org.
  9. ^ George Field's notes are held at the Courtauld Institute of Art. See "FIELD, George (?1777–1854)". Archived from the original on 2008-10-17. Retrieved 2012-08-04.
  10. ISBN 978-0-486-20327-0
    .
  11. ^ See:
  12. ^ Note:
    • In 1868, Graebe and Liebermann showed that alizarin can be converted into anthracene. See: C. Graebe and C. Liebermann (1868) "Ueber Alizarin, und Anthracen" (On alizarin and anthracene), Berichte der Deutschen chemischen Gesellschaft zu Berlin, 1 : 49–51.
    • In 1869, Graebe and Liebermann announced that they had succeeded in transforming anthracene into alizarin. See: C. Graebe and C. Liebermann (1869) "Ueber künstliche Bildung von Alizarin" (On the artificial formation of alizarin), Berichte der Deutschen chemischen Gesellschaft zu Berlin, 2 : 14.
    • For Graebe and Liebermann's original process for making alizarin from anthracene, see: Charles Graebe and Charles Liebermann, "Improved process of preparing alizarine," U.S. Patent no. 95,465 (issued: October 5, 1869). (See also their English patent, no. 3,850, issued December 18, 1868.)
    • A more efficient process for making alizarin from anthracene was developed by Caro, Graebe and Liebermann in 1870. See: H. Caro, C. Graebe, and C. Liebermann (1870) "Ueber Fabrikation von künstlichem Alizarin" (On the manufacture of artificial alizarin), Berichte der Deutschen chemischen Gesellschaft zu Berlin, 3 : 359–360.
  13. ^ "History The Early Years (1863–1881)". Bayer AG. Retrieved 4 February 2021.
  14. ^ Brönner, J.; Gutzkow, H. (1871). "Verfahren zur Darstellung von Anthracen aus dem Pech von Steinkohlentheer, und zur Darstellung von Farbstoffen aus Anthracen" [Process for Preparing Anthracene from Coal-Tar Pitch, and Preparation of Dye-Stuffs from Anthracene]. Dinglers Polytechnisches Journal (in German). 201: 545–546.
  15. S2CID 96340805
    .
  16. doi:10.15227/orgsyn.006.0078
    .
  17. PMID 4110754
    .
  18. ISSN 0045-8511
    .
  19. ^
    PMID 4179464
    .
  20. PMID 6186260
    .
  21. ISBN 978-0-412-58980-5
    .
  22. doi:10.1306/74D714F6-2B21-11D7-8648000102C1865D
    .
  23. ^ Schweppe, H., and Winter, J. Madder and Alizarin in Artists’ Pigments. A Handbook of Their History and Characteristics, Vol 3: E.W. Fitzhugh (Ed.) Oxford University Press 1997, p. 111 – 112
  24. S2CID 91688529
    .

Further reading

  • Schweppe, H., and Winter, J. "Madder and Alizarin", in Artists’ Pigments: A Handbook of Their History and Characteristics, Vol. 3: E.W. Fitzhugh (Ed.) Oxford University Press 1997, pp. 109–142

External links

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