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Quinizarin

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Identification
Molecular formula
C14H8O4
CAS number
81-64-1
IUPAC name
1,5-dihydroxyanthracene-9,10-dione
State
State

In its pure form, quinizarin is a solid at room temperature. It is typically found as a crystalline powder.

Melting point (Celsius)
198.00
Melting point (Kelvin)
471.15
Boiling point (Celsius)
374.00
Boiling point (Kelvin)
647.15
General information
Molecular weight
240.21g/mol
Molar mass
240.2100g/mol
Density
1.5500g/cm3
Appearence

Quinizarin appears as a reddish-brown solid. It is commonly supplied in its crystalline form, exhibiting a bright red crystalline powder appearance. This compound is often used as a dye and stains materials in various shades of red.

Comment on solubility

Solubility of 1,5-Dihydroxyanthracene-9,10-dione

When considering the solubility of 1,5-dihydroxyanthracene-9,10-dione, it is essential to recognize that this compound showcases some intriguing characteristics. Its solubility is influenced by several factors, including:

  • Polarity of the solvent: Being a polyhydroxy compound, it exhibits enhanced solubility in polar solvents.
  • Hydroxyl groups: The presence of hydroxyl (–OH) groups increases the compound's ability to engage in hydrogen bonding, further promoting solubility in water and alcohols.
  • Temperature and concentration: Higher temperatures commonly increase solubility; thus, warming the solvent may facilitate better dissolution.

Moreover, while 1,5-dihydroxyanthracene-9,10-dione is more soluble in organic solvents like methanol and ethanol, it demonstrates limited solubility in non-polar solvents. Users should keep in mind:

  1. Careful selection of the solvent can significantly impact the solubility results.
  2. Precipitation may occur if the solvent is saturated.

To summarize, the solubility of 1,5-dihydroxyanthracene-9,10-dione is generally favored in polar environments, making it crucial to consider solvent interactions during practical applications or experiments.

Interesting facts

Interesting Facts about 1,5-Dihydroxyanthracene-9,10-dione

1,5-Dihydroxyanthracene-9,10-dione, often referred to as Alizarin Red in various sectors, is a fascinating compound with a rich history and importance in both natural and synthetic chemistry. Here are some notable aspects:

  • Historical Significance: This compound has roots that trace back to natural sources; it was originally derived from the dye madder, which comes from the roots of Rubia tinctorum. This made it a popular dye in historical textile applications.
  • Applications: Alizarin Red has been utilized in various fields, including:
    • Art and Textiles: Known for its vibrant reddish hues.
    • Biochemistry: Often employed as a stain for various biological materials, revealing significant cellular structures.
    • Materials Science: Its unique properties lend themselves to research in organic electronics, where it's studied for potential use in organic semiconductors.
  • Chemical Structure: The compound belongs to the anthraquinone family and features a distinct planar arrangement, which contributes to its strong light absorbance properties. This characteristic makes it effective as a dye, as it can efficiently absorb specific wavelengths of light.
  • Environmental Impact: While useful, there's also rising interest in understanding the environmental implications of dyes like Alizarin Red, especially concerning wastewater treatment in textile industries. Researchers are exploring methods to degrade these compounds effectively.
  • Research and Innovation: Ongoing studies leverage 1,5-dihydroxyanthracene-9,10-dione in mode production of biosensors and photovoltaic devices, showcasing its importance beyond traditional applications.

In summary, 1,5-Dihydroxyanthracene-9,10-dione is not merely a compound of interest for its color; it spans across multiple disciplines from art to modern scientific applications. As we continue to explore and innovate, its role within these fields may evolve even further.

Synonyms
1,5-DIHYDROXYANTHRAQUINONE
Anthrarufin
117-12-4
1,5-dihydroxyanthracene-9,10-dione
9,10-Anthracenedione, 1,5-dihydroxy-
1,5-Dihydroxyanthrachinon
1,5-Dihydroxy-9,10-anthraquinone
1,5-Dihydroxy-9,10-anthracenedione
Anthraquinone, 1,5-dihydroxy-
CHEBI:37501
1,5-Dihydroxy-anthraquinone
NSC 7211
Az-U
CCRIS 3150
1,5-Dihydroxyanthrachinon [Czech]
UNII-KPB60W5S3M
EINECS 204-175-6
KPB60W5S3M
MFCD00001210
NSC 646570
BRN 1881718
NSC-7211
ANTHRARUFIN [MI]
NSC-646570
DTXSID8051594
NSC7211
1,5-Dihydroxyanthraquinone, tech.
4-08-00-03268 (Beilstein Handbook Reference)
1,5-Dihydroxyanthra-9,10-quinone
NSC646570
1,5Dihydroxyanthrachinon
9, 1,5-dihydroxy-
1,5Dihydroxyanthraquinone
Anthraquinone,5-dihydroxy-
Epitope ID:116190
Anthraquinone, 1,5dihydroxy
CHEMBL55761
SCHEMBL187843
1,5Dihydroxy9,10anthraquinone
1,5Dihydroxy9,10anthracenedione
DTXCID90818191
5,9-dihydroxy-1,10-anthraquinone
9,10-dihydroxy-1,5-anthraquinone
Anthrarufin, technical grade, 85%
9,10Anthracenedione, 1,5dihydroxy
BBL013162
BDBM50568423
STK803592
WLN: L C666 BV IVJ DQ KQ
AKOS001583186
1,10-Anthraquinone, 1,5-dihydroxy-
1,5-Dihydroxyanthra-9,10-quinone #
FD40719
AS-15880
NCI60_041483
SY017889
D0562
NS00014594
F71867
AE-641/00185061
1,5-dihydroxy-9,10-dihydroanthracene-9,10-dione
Q27117170