A4716831
Ethyl orange indicator , 0.1% , 62758-12-7
Synonym(s):
4-(4-Diethylaminophenylazo)benzenesulfonic acid sodium salt
CAS NO.：62758-12-7
Empirical Formula: C16H18N3NaO3S
Molecular Weight: 355.39
MDL number: MFCD00007503
EINECS: 263-716-4
| Pack Size | Price | Stock | Quantity |
| 100ml | RMB47.20 | In Stock |
|
| others | Enquire |
Update time: 2022-07-08
PRODUCT Properties
| Melting point: | >300°C |
| storage temp. | room temp |
| solubility | Very soluble in water; very slightly soluble in ethanol |
| pka | 4.34(at 25℃) |
| form | Powder |
| color | Orange |
| PH Range | Red (3.4) to yellow (4.8) |
| Water Solubility | H2O: 1mg/mL |
| ε(extinction coefficient) | ≥29000 at 473-477nm in deionized water ≥8000 at 274-282nm in deionized water |
| λmax | 474nm |
| BRN | 3821641 |
| Major Application | Lithographic plate preparation, holographic storage, hybrid materials, inks, surface probes, diagnostic agents for diseases related with amyloid accumulation |
| CAS DataBase Reference | 62758-12-7(CAS DataBase Reference) |
| EPA Substance Registry System | Benzenesulfonic acid, 4-[[4-(diethylamino)phenyl]azo]-, sodium salt (62758-12-7) |
Description and Uses
Indicator: pH 3.0 (red) to pH 4.5 (yellow)
Safety
| Symbol(GHS) |  GHS07 |
| Signal word | Warning |
| Hazard statements | H315-H319-H335 |
| Precautionary statements | P261-P264-P271-P280-P302+P352-P305+P351+P338 |
| Hazard Codes | Xi |
| Risk Statements | 36/37/38 |
| Safety Statements | 26-36-24/25 |
| WGK Germany | 3 |
| TSCA | Yes |
| HS Code | 29270000 |
