122777

Alizarin

Dye content 97 %

• Synonym(s): 1,2-Dihydroxyanthraquinone, Mordant Red 11
• Empirical Formula (Hill Notation): C₁₄H₈O₄
• CAS Number: 72-48-0
• Molecular Weight: 240.21
• Colour Index Number: 58000
• Beilstein/REAXYS Number: 1914037
• EC Number: 200-782-5
• MDL number: MFCD00001201
• UNSPSC Code: 12171500
• PubChem Substance ID: 24847507
• NACRES: NA.47

Properties

• form: solid
• Quality Level: 200
• composition: Dye content, 97%
• color: yellow
• 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

Description

Application

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

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.

Safety Information

• pictograms: GHS05,GHS07,GHS09
• signalword: Danger
• hcodes: H317,H318,H410
• pcodes: P261 - P272 - P273 - P280 - P302 + P352 - P305 + P351 + P338
• Hazard Classifications: Aquatic Chronic 1 - Eye Dam. 1 - Skin Sens. 1A
• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 2
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: Eyeshields, Faceshields, Gloves, type N95 (US)