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Sigma-Aldrich

Purpurin

Dye content 90 %

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Synonym(s):
1,2,4-Trihydroxyanthraquinone, Hydroxylizaric acid, Verantin
Empirical Formula (Hill Notation):
C14H8O5
CAS Number:
Molecular Weight:
256.21
Colour Index Number:
58205
Beilstein/REAXYS Number:
1887127
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.47

assay

>70-85% (HPLC)

form

powder

composition

Dye content, 90%

impurities

1-3% DMF

mp

253-256 °C (lit.)

solubility

NH4OH: 1 mg/mL, clear to turbid

λmax

515 nm
521 nm (2nd)

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

SMILES string

Oc1cc(O)c2C(=O)c3ccccc3C(=O)c2c1O

InChI

1S/C14H8O5/c15-8-5-9(16)14(19)11-10(8)12(17)6-3-1-2-4-7(6)13(11)18/h1-5,15-16,19H

InChI key

BBNQQADTFFCFGB-UHFFFAOYSA-N

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Related Categories

General description

Purpurin (1, 2, 4-trihydroxyanthraquinone) is the key pigment present in the roots of Indian madder (Rubia cordifolia). This pigment produces colors, with distinctive heat and light resistant properties.

Application

Nuclear stain in histology

pictograms

Exclamation mark

signalword

Warning

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

target_organs

Respiratory system

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

235.4 °F - closed cup

flash_point_c

113 °C - closed cup

ppe

dust mask type N95 (US), Eyeshields, Gloves


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