1 8-DIAMINO-4 5-DIHYDROXYANTHRAQUINONE Property

Melting point:

>300 °C (decomp)

Boiling point:

413.36°C (rough estimate)

Density 

1.2809 (rough estimate)

refractive index 

1.6500 (estimate)

solubility 

DMSO (Slightly), Methanol (Slightly)

form 

Solid

pka

6.34±0.20(Predicted)

color 

Black

EPA Substance Registry System

9,10-Anthracenedione, 1,8-diamino-4,5-dihydroxy- (128-94-9)

Safety

Hazard Codes 

Xi

Risk Statements 

36/37/38

Safety Statements 

26-36

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P321Specific treatment (see … on this label).

P332+P313IF SKIN irritation occurs: Get medical advice/attention.

P362Take off contaminated clothing and wash before reuse.

1 8-DIAMINO-4 5-DIHYDROXYANTHRAQUINONE Chemical Properties,Usage,Production

Uses

1,8-Diaminochrysazine is an intermediate in the synthesis of compounds used to disperse dye for synthetic polyester fibers.

Synthesis

4,5-Diamino-1,8-dihydroxyanthraquinone is prepared from 1,8-dihydroxy-4,5-dinitroanthraquinone by reduction or by cleavage of the sulfonic acid groups from the corresponding 2,7-disulfonic acid .