Patton and Reeder's reagent AR
Calconcarboxylic acid ; [2-hydroxy-(2-hydroxy-4-sulpho-1-naphthylazo)-3naphthoic acid]
Product Code. |
01936 |
Grade |
AR |
Purity |
CAS No. |
3737-95-9 | |
Molecular Formula |
C21H14N2O7S |
Molecular Weight |
438.42 |
H.S.Code |
2927.00900 |
Shelf Life |
60 Months |
Physical Properties
| Physical state at 20 °C |
Solid |
Colour |
Dark red powder |
Odour |
Odorless |
| Melting point/ Freezing point [°C] |
300 °C |
Solubility in water [% weight] |
8 g/l at 20 °C |
Partition coefficient Log Pow octanol / water at 20°C |
4.48 |
Packaging
Specification
| Appearance | Dark purple to black powder |
| Absorption maxima | 569 - 572 nm |
| Absorptivity (A 1%/1cm; at lmax) | Min 250 |
| Loss on dryig (at 135°C) | Max 7% |
| Suitability (as complexometric indicator) | Passes test |
Safety Information and Hazard Symbols
Symbol: GHS07
Signal Word: Warning
Hazardous Statement: H315-H319-H335
Precaution Statement: P261-P305 + P351 + P338