ETHYL ORANGE
Synonym(s):4-(4-Diethylaminophenylazo)benzenesulfonic acid sodium salt
- CAS NO.：62758-12-7
- Empirical Formula: C16H20N3NaO3S
- Molecular Weight: 357.4
- MDL number: MFCD00007503
- EINECS: 263-716-4
- SAFETY DATA SHEET (SDS)
- Update Date: 2025-07-04 15:12:03
What is ETHYL ORANGE?
Chemical properties
orange crystalline powder
The Uses of ETHYL ORANGE
Indicator: pH 3.0 (red) to pH 4.5 (yellow)
What are the applications of Application
Ethyl orange sodium salt is an organic azo pH indicator
Purification Methods
Recrystallise it twice from water. [Beilstein 16 IV 511.]
Properties of ETHYL ORANGE
| Melting point: | >300°C |
| solubility | 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) |
| 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) |
Safety information for ETHYL ORANGE
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
| Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P271:Use only outdoors or in a well-ventilated area. P280:Wear protective gloves/protective clothing/eye protection/face protection. P302+P352:IF ON SKIN: wash with plenty of soap and water. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for ETHYL ORANGE
ETHYL ORANGE manufacturer
JSK Chemicals
2Y
Phone:+91-9879767984
Whatsapp: +91-9879767970
product: 62758-12-7 Ethyl Orange sodium salt 99%
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