alpha-Naphtholphthalein CAS NO.596-01-0

Product Name:    alpha-Naphtholphthalein
Synonyms:    1(3H)-Isobenzofuranone, 3,3-bis(4-hydroxy-1-naphthalenyl)-;à-naphtholphthalein;3,3-bis(4-hydroxy-1-naphthyl)phthalide;A-NAPHTHOLPHTHALEIN PRACTICAL GRADE;ALPHA-NAPHTHOLPHTHALEIN INDICATOR;1-NAPHTHOLPHTHALEIN, INDICATOR;ALPHA-NAPHTHOLPHTHALEIN(0.1% IN CA. 50% ETHANOL)[FOR PH DETERMINATION];alpha-Naphtholphthalein, indicator, pure
CAS:    596-01-0
MF:    C28H18O4
MW:    418.44
Mol File:    596-01-0.mol

alpha-Naphtholphthalein Chemical Properties
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    pH : 7.1～8.7
PH Range    7.1(brownish)-8.3(blue/green)
Water Solubility     Soluble in ethanol. Insoluble in water.
λmax    648nm
Merck     14,6389
BRN     97816
InChIKey    HQHBAGKIEAOSNM-UHFFFAOYSA-N
CAS DataBase Reference    596-01-0(CAS DataBase Reference)
Safety Information
Hazard Codes     Xi
Risk Statements     36/37/38
Safety Statements     26-36
WGK Germany     3
HS Code     32041900