Pigment Red 23 Chemical Properties

Melting point:

330-340°C

Boiling point:

583.02°C (rough estimate)

Density 

1.4576 (rough estimate)

vapor pressure 

0Pa at 25℃

refractive index 

1.7500 (estimate)

storage temp. 

Amber Vial, -20°C Freezer

solubility 

Basic DMSO (Slightly), DMSO (Very Slightly), Methanol (Slightly)

form 

Solid

pka

11.07±0.70(Predicted)

color 

Dark Red

Water Solubility 

<0.1 g/100 mL at 22 ºC

Stability:

Stable, but light sensitive. Incompatible with strong oxidizing agents.

LogP

5.04 at 25℃

CAS DataBase Reference

6471-49-4(CAS DataBase Reference)

EPA Substance Registry System

C.I. Pigment Red 23 (6471-49-4)

Safety Information

Hazardous Substances Data

6471-49-4(Hazardous Substances Data)

MSDS

• Language:English Provider:C.I. 12355

Pigment Red 23 Usage And Synthesis

Chemical Properties

red powder

General Description

Red to bluish red powder.

Air & Water Reactions

Azo dyes can be explosive when suspended in air at specific concentrations. Insoluble in water.

Reactivity Profile

Pigment Red 23 is sensitive to light and may be sensitive to heat. Pigment Red 23 is incompatible with strong oxidizing agents. . Pigment Red 23 is an azo compound. Azo, diazo, azido compounds can detonate. This applies in particular to organic azides that have been sensitized by the addition of metal salts or strong acids. Toxic gases are formed by mixing materials of this class with acids, aldehydes, amides, carbamates, cyanides, inorganic fluorides, halogenated organics, isocyanates, ketones, metals, nitrides, peroxides, phenols, epoxides, acyl halides, and strong oxidizing or reducing agents. Flammable gases are formed by mixing materials in this group with alkali metals. Explosive combination can occur with strong oxidizing agents, metal salts, peroxides, and sulfides.

Fire Hazard

Flash point data for Pigment Red 23 are not available. Pigment Red 23 is probably combustible.

Flammability and Explosibility

Not classified

Properties and Applications

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