ETHYL RED Chemical Properties

Melting point:

135 °C

Boiling point:

438.86°C (rough estimate)

Density 

1.0871 (rough estimate)

refractive index 

1.6500 (estimate)

solubility 

Solubility Almost insoluble in water; slightly soluble in ethanol, soluble in benzene

form 

powder

pka

5.42(at 25℃)

color 

Red

PH Range

Red (4.5) to yellow (6.5)

λmax

447nm

BRN 

3366056

Major Application

Optical materials, photoresists, flexible electronic circuitry, adhesives, textiles, method for counting leukocytes, enzyme binding assays, DNA chips

CAS DataBase Reference

76058-33-8(CAS DataBase Reference)

Safety Information

Hazard Codes 

Xn

Risk Statements 

32-20/21

Safety Statements 

22-24/25

HS Code 

29270000

MSDS

• Language:English Provider:ACROS
• Language:English Provider:ALFA

ETHYL RED Usage And Synthesis

Chemical Properties

dark red powder

Uses

Indicator: pH 4.5 (red) to pH 6.5 (yellow)

Purification Methods

Ethyl Red [2-(4-diethylaminophenylazo)benzoic acid] M 297.4, m 135o, 150-1 5 2o, pK1 2.5, pK2 9.5. Crystallise the acid dye from EtOH/diethyl ether or toluene. It is an indicator: pH 4.4 (red) and 6.2 (yellow). UV: max 447nm. [Beilstein 16 I 316.]

ETHYL RED(76058-33-8)Related Product Information

• Ammonium benzoate
• N,N-Diethyl-1,4-phenylenediamine
• Methyl Red
• ETHYL RED
• 2-Aminobenzyl alcohol
• N,N-Dimethylethylamine
• N-METHYL-1,4-PHENYLENEDIAMINE DIHYDROCHLORIDE
• ANILINE ACETATE
• N,N-Dimethyl-1,4-phenylenediamine
• N,N-Dimethylaniline
• Solvent Yellow 2
• Solvent Yellow 56
• N,N-Diethylaniline
• N-ETHYL-N-METHYLANILINE
• N,N-DIETHYLMETHYLAMINE
• Propyl Red
• Azobenzene
• 4-(METHYLAMINO)AZOBENZENE