Acid Yellow 23

Chemical type:

Azo   

Chemical Formula:

C16H9N4Na3O9S2

CAS No.

1934-21-0

Molecular Weight:

534.36

EINCES No.

217-699-5

C.I.

19140

Chemical structure:

Appearance:

Shade:

Solubility:

Moisture:

Insoluble:

Fineness (80mash):

pH value:

Melting point:

Conductance:

Chlorine ion:

Yellow powder

Similar to the standard

≥100g/L

≤7%

≤0.04%

≤3.0% 

6-7

300°C

467ms/cm

0.096%

Property:

Yellow powder, easily soluble in water, ethanol, aether, benzene and glycol-aether, slightly soluble in acetone. Violet in sulphuric acid, red precipitate after diluted, blue in dense nitric acid. Good quality of discharge.

Chemical type:

Azo   

Chemical Formula:

C16H9N4Na3O9S2

CAS No.

1934-21-0

Molecular Weight:

534.36

EINCES No.

217-699-5

C.I.

19140

Chemical structure:

Appearance:

Shade:

Solubility:

Moisture:

Insoluble:

Fineness (80mash):

pH value:

Melting point:

Conductance:

Chlorine ion:

Yellow powder

Similar to the standard

≥100g/L

≤7%

≤0.04%

≤3.0% 

6-7

300°C

467ms/cm

0.096%

Property:

Yellow powder, easily soluble in water, ethanol, aether, benzene and glycol-aether, slightly soluble in acetone. Violet in sulphuric acid, red precipitate after diluted, blue in dense nitric acid. Good quality of discharge.