p-Naphtholbenzein

p-Naphtholbenzein Basic information

Product Name:	p-Naphtholbenzein
Synonyms:	α-Naphtholbenzein,4,4′-(α-Hydroxybenzylidene)di-1-naphthol, p-naphtholbenzein;alpha-Naphtholbenzein, pure, 90% 10GR;alpha-Naphtholbenzein, pure, 90% 25GR;1-NAPHTHOLBENZEIN INDICATOR 5 G;α- naphthol quinone phenylMethane;MAG BIND EQUIPURE GDNA (1X96);1-Naphtholbenzein indicator Reag. Ph Eur;1(4H)-Naphthalenone, 4-(4-hydroxy-1-naphthalenyl)phenylmethylene-
CAS:	145-50-6
MF:	C27H18O2
MW:	374.43
EINECS:	205-656-3
Product Categories:	Benzein;Analytical Chemistry;Indicator (pH);pH Indicators
Mol File:	145-50-6.mol

p-Naphtholbenzein Chemical Properties

Melting point	230-235 °C(lit.)
Boiling point	463.44°C (rough estimate)
density	1.0946 (rough estimate)
vapor density	12.9 (vs air)
refractive index	1.4875 (estimate)
storage temp.	Store at +5°C to +30°C.
solubility	Solubility Insoluble in water; soluble in ethanol, methanol
pka	8.95(at 25℃)
form	Liquid
color	Pale Red-Brown
Odor	Odorless
PH Range	Green (0.0) to yellow (0.8);Yellow (8.2) to green-blue (11.0)
Water Solubility	insoluble
λmax	210nm
BRN	3471575
Stability:	Stable. Combustible. Incompatible with strong oxidizing agents.
InChIKey	VDDWRTZCUJCDJM-SOYKGTTHSA-N
CAS DataBase Reference	145-50-6(CAS DataBase Reference)
EPA Substance Registry System	1(4H)-Naphthalenone, 4-[(4-hydroxy-1-naphthalenyl)phenylmethylene]- (145-50-6)

Safety Information

MSDS Information

p-Naphtholbenzein Usage And Synthesis

Chemical Properties	deep red to rust-coloured crystals
Uses	alpha-Naphtholbenzein is a pH indicator (pH 0.0-0.8/ pH 8.2-10.0). Dyes and metabolites.

p-Naphtholbenzein Preparation Products And Raw materials

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