Purpurin (C.I.58205)
CAS: 81-54-9
Molecular Formula: C14H8O5
Molecular Weight: 256.21
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
| Pictograms |
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| Signal word | Warning | ||||
| Hazard statements | H315: Causes skin irritation
H319: Causes serious eye irritation H335: May cause respiratory irritation |
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| Precautionary statements | P261: Avoid breathing dust/fume/gas/mist/vapours/spray
P280: Wear protective gloves/protective clothing/eye protection/face protection P302+352: IF ON SKIN: Wash with soap and water P305+351+338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do, continue rinsing |