Alizarin | CAS No. 72-48-0

Alizarin

Basic Information

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CAS Number

72-48-0

Molecular Formula

C14H8O4

Molecular Weight

240.21 g/mol

Chemical Classification

Basic Chemical Raw Materials Organic Chemicals Carboxylic Acids

Basic Chemical Raw Materials Organic Chemicals Ketones

Fine Chemicals Dyes and Pigments Organic Dyes

Fine Chemicals Surfactants Anionic Surfactants

Basic Physical Properties

Physical State

Red cryst.

Melting Point

279-283 °C

Boiling Point

430 ºC

Density

430

Water Solubility

Soluble in hexane and chloroform. Slightly soluble in water.

Flash Point

430°C subl.

Solubility

Solubility Virtually insoluble in water; moderately soluble in ethanol, soluble in benzene, toluene, Ixylene, pyridine, acetic acid

Refractive Index

1.5190 (estimate)

Vapor Pressure

8.76e-10 mmHg

SMILES

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Oc1ccc2C(=O)c3ccccc3C(=O)c2c1O

InChI

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

InChIKey

RGCKGOZRHPZPFP-UHFFFAOYSA-N

LogP

1.8732000000000002

pKa

6.77(at 25℃)

Topological Polar Surface Area

74.6 Å²

Hydrogen Bond Donor/Acceptor

2 / 4

Complexity

378

Safety Information

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GHS Hazard Pictograms

H302

H319

Hazard Statement

H302 Harmful if swallowed
Acute toxicity, oral

H319 Causes serious eye irritation
Serious eye damage/eye irritation

Storage Conditions

2-8℃

Stability

Stable. Incompatible with strong oxidizing agents, strong bases.

Synonyms & References

English

1,2-Dihydroxyanthracene-9,10-dione
1,2-Dihydroxyanthraquinone
Mordant Red 11
alizarine
1,2-Dihydroxy-9,10-anthracenedione
ALIZARIN
ALIZARIN(P)
ALIZARIN(RG) PrintBack
1,2-dihydroxy-9,10-anthraquinone
Aliazrin
Alizarina
C.I. Mordant Red 11
C.I. PigMent Red 83
C.I.58000
dihydroxyanthraquinone
Pincoffin
Red 83
S NO 1141
Alizarin Red
Dihydroxy-9,10-anthracenedione
C.I. 58000
Turkey Red
Alizarin B
1,2-Anthraquinonediol
Alizarine Red
Alizarine B
Eljon Madder
Alizerine NAC
Alizarine NAC
Alizarine Red L
Alizarine Red B

MDL Number

MFCD00001201

Customs Code

2914700090

FAQ

What is Alizarin (CAS: 72-48-0)?

Alizarin (CAS: 72-48-0) is a synthetic organic compound with the chemical formula C14H8O4. It is a red dye and a derivative of anthracene, commonly used for its vibrant color and chemical properties. Alizarin exhibits pH sensitivity and is known for its role in analytical chemistry and industrial applications, such as textile coloring and staining agents.

What are the main uses of Alizarin (CAS: 72-48-0)?

Alizarin (CAS: 72-48-0) is primarily used as a pH indicator in laboratories, particularly in titration processes. It also serves as a precursor in the synthesis of other dyes and pigments, and finds applications in pharmaceuticals, cosmetics, and food industries as a coloring agent. Its chemical versatility makes it valuable in research and industrial settings for staining and analytical purposes.

Is Alizarin (CAS: 72-48-0) safe?

Alizarin (CAS: 72-48-0) is generally considered safe when used in controlled concentrations, but it may cause skin or eye irritation upon contact. Safety precautions include avoiding inhalation of dust and using protective gloves and goggles. While not classified as highly toxic, proper handling is advised to minimize health risks, and adherence to safety standards like OSHA guidelines is recommended for industrial use.

How should Alizarin (CAS: 72-48-0) be stored?

Alizarin (CAS: 72-48-0) should be stored in a sealed, airtight container in a cool, dry place away from light. It is stable at room temperature (15-25°C) and low humidity but may degrade when exposed to moisture or UV light. Storage in dark glass bottles is recommended to preserve its chemical integrity and prolong shelf life.