1-NAPHTHOLBENZEIN (PH INDICATOR)
| Product Code | B-01781 | BRAND | Bio-Chem |
|---|---|---|---|
| Grade | Indicator | CAS No | 145-50-6 |
| Molecular Formula | C27H18O2 | Molecular Weight | 374.44 |
| H.S.Code | 2914.50000 | Shelf Life | 60 Months |
| Purity | 97 % |
Physical Properties
| Physical state at 20 °C | Solid | Colour | Dark reddish black |
|---|---|---|---|
| Odour | Odorless | Vapour density | 12.9 |
| Melting point/ Freezing point [°C] | 185 °C | Solubility in water [% weight] | Insoluble in water |
Packaging
Specification
| Appearance | Dark red to red-brown to brown-black to orange-brown powder |
| Visual transition interval | Yellow to greenpH 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 ,GHS08
Signal Word: Warning
Hazardous Statement: H315-H319-H335
Precaution Statement: P261-P305 + P351 + P338