alpha-Naphtholphthalein

Melting point::

238-240 °C(lit.)

Boiling point::

496.21°C (rough estimate)

Density :

1.1532 (rough estimate)

vapor density :

14.44 (vs air)

refractive index :

1.6400 (estimate)

storage temp. :

Store below +30°C.

solubility :

Solubility Practically insoluble in water; soluble in ethanol

pka:

8.0, 8.2, 8.5(at 25℃)

form :

Powder

color :

Pink to beige or brown

Odor:

Characteristic odour

PH Range:

7.1(brownish)-8.3(blue/green)

PH:

pH : 7.1～8.7

Water Solubility :

Soluble in ethanol. Insoluble in water.

λmax:

648nm

Merck :

14,6389

BRN :

97816

InChIKey:

HQHBAGKIEAOSNM-UHFFFAOYSA-N

Symbol(GHS) 

GHS07

Signal word 

Warning

Hazard statements 

H315-H319-H335

Precautionary statements 

P261-P280a-P304+P340-P305+P351+P338-P405-P501a