Purpurin (C.I.58205)
(19495136 | 81-54-9)

CAS: 81-54-9
Molecular Formula: C14H8O5
Molecular Weight: 256.21
Availablility: In Stock
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Purpurin (C.I.58205) Chemical Structure

19495136-25g 25g £121.60
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Safety Data Sheet

Product Detail
Product Code 19495136
Product Name Purpurin (C.I.58205)
Categories Stains & Indicators
CAS 81-54-9
Molecular Formula C14H8O5
Molecular Weight 256.21
Storage Details Ambient
Harmonised Tariff Code 29146980

Product Specification
Melting Point 253-256°C
pH 3.8-4.5 (50mg in 100m/l, 50/50 THF & H2O)
Solubility (1mg/ml NH4OH) Red to very dark red to purple solution.
Assay (HPLC) ≥94%
Appearance Dark red to orange brown to brown powder
Impurity HPLC ≤3% Alizarin
Loss on drying ( 150°C 1 hrs ) ≤1.0%
For research use only, not for human use research use only, not for human use
Spectrophotometric Assay Conc. 0.01g/l in methanol Extinction Co-efficient E (237nm +/- 3nm) = 17000, E (257nm +/- 3nm) = 17000, E (514nm +/- 3nm) = 7000
Manganese (Mn) ICP ≤500ppm
Sulphur (S) ICP ≤1500ppm

Safety Information
Exclamation Mark
Signal word warning
Hazard statements
  • H315: Causes skin irritation

  • H319: Causes serious eye irritation

  • H335: May cause respiratory irritation
Precautionary statements
  • P261: Avoid breathing dust/fume/gas/mist/vapours/

  • P280: Wear: protective gloves/ clothing & eye protection

  • P302+352: IF ON SKIN: Wash with soap and water

  • P305+351+338: IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing