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1-NAPHTHOLBENZEIN Indicator grade
Used as an indicator 0.1g in 100 ml 2-propanol.
| Article No. | Grade | Purity | CAS No. | Molecular Formula | Molecular Weight | H.S. Code | Shelf Life |
|---|---|---|---|---|---|---|---|
| SC3639 | Indicator grade | 145-50-6 | C27H18O2 | 374.44 | 2914.5000 | 60 Months |
Packings
| 5 g,25 g |
Physical Properties
| Physical state at 20 °C | Solid |
| Colour | Dark reddish black |
| Odour | Odorless |
| Melting point/ Freezing point [°C] | 185°C |
| Vapour density | 12.9 |
| Solubility in water [% weight] | Insoluble in water |
Specifications
| Appearance | Dark red to red-brown to brown-black to orange-brown powder |
| Visual transition interval | pH 8.2 (yellow to orange) to pH 10 (green-blue) |
| Absorption maxima in acetic perchloric acid 0.1 mol/L | 622 - 626 nm |
Safety Information and Hazard Symbols
|
|
|---|---|
| Symbol | GHS07 |
| Signal Word | Warning |
| UN No. | |
| IMCO Class No. | |
| Packing Group | |
| Hazardous Statement | H315-H319-H335 |
| Precaution Statement | P261-P305 + P351 + P338 |
| Risk Statement | |
| Safety Statement | |