82631

Purpurin

• Synonym(s): 1,2,4-Trihydroxyanthraquinone, Hydroxylizaric acid, Verantin
• Empirical Formula (Hill Notation): C₁₄H₈O₅
• CAS Number: 81-54-9
• Molecular Weight: 256.21
• EC Number: 201-359-8
• UNSPSC Code: 12352200
• NACRES: NA.21
• PubChem Substance ID: 329769256
• MDL number: MFCD00001203
• Colour Index Number: 58205
• Beilstein/REAXYS Number: 1887127

Properties

• Quality Segment: 100
• technique(s): UV/Vis spectroscopy: suitable, titration: suitable
• mp: 253-256 °C (lit.)
• 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

Description

General description

Purpurin is a synthetic photosensitizer. It has tissue-penetrating property as its major absorption peak is between 650-715 nm. It is widely used as anthraquinone pigment in food colouring, textile industry, paint industry and medicinal treatments.

Application

Traditionally it has been used to dye cotton fabric materials. It may be used as reference standard in identifying red natural dyes using High performance liquid chromatography (HPLC) with UV-Vis Diode Array Detection (DAD) and electrospray mass spectrometric (ESI-MS) method.

Other Notes

Complexing agent for the spectrophotometric detm. of metals, e.g. La and Pb

Safety Information

• Pictograms: GHS07
• Signal Word: Warning
• Hazard Codes: H315,H319,H335
• Precautionary Statements: P261 - P264 - P271 - P280 - P302 + P352 - P305 + P351 + P338
• Hazard Classifications: Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3
• Target Organs: Respiratory system
• Storage Class: 11 - Combustible Solids
• WGK: WGK 3
• Flash Point (°F): 235.4 °F - closed cup
• Flash Point (°C): 113 °C - closed cup
• PPE (personal protective equipment): dust mask type N95 (US), Eyeshields, Gloves