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122777

Sigma-Aldrich

Alizarin

Dye content 97 %

Synonym(s):
Mordant Red 11, 1,2-Dihydroxyanthraquinone
Empirical Formula (Hill Notation):
C14H8O4
CAS Number:
Molecular Weight:
240.21
Colour Index Number:
58000
Beilstein:
1914037
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.47

Quality Level

form

solid

composition

Dye content, 97%

visual transition interval

10.1-12.1, red to violet(alkaline)
5.5-6.8, yellow to red(acid)

mp

279-283 °C (lit.)

solubility

0.1 M NaOH: 0.01 g/L

λmax

567 nm (2nd)
609 nm

ε (extinction coefficient)

13000 at 227-233 nm in 0.1 M NaOH at 0.01 g/L
26000 at 268-274 nm in 0.1 M NaOH at 0.01 g/L

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

Oc1ccc2C(=O)c3ccccc3C(=O)c2c1O

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

InChI key

RGCKGOZRHPZPFP-UHFFFAOYSA-N

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Application

Alizarin has been used as a biological stain to dye cotton fabrics and is used as standard in UV-visible spectrophotometer.

Packaging

100, 500 g in glass bottle

Biochem/physiol Actions

Alizarin (1, 2-dihydroxyanthraquinone) is an anthraquinone dye and acts as a main chromophore of madder dye. It is used as a dye in the production of lake pigments. Alizarin is a key constituent in extracts of roots of various members of Rubiaceae, Morinda, Gallium, Oldenlandia families.

Signal Word

Danger

Hazard Statements

Hazard Classifications

Aquatic Chronic 1 - Eye Dam. 1 - Skin Sens. 1A

Storage Class Code

11 - Combustible Solids

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Origin

Enter Lot Number to search for Certificate of Origin (COO).

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