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ALPHA-NAPHTHOLBENZEIN

Basic information Safety Supplier Related

ALPHA-NAPHTHOLBENZEIN Basic information

Product Name:
ALPHA-NAPHTHOLBENZEIN
Synonyms:
  • α-Naphtholbenzein
  • LABOTEST-BB LT00441167
  • BIS(4-HYDROXY-1-NAPHTHYL)PHENYLMETHANOL
  • Bis-(4-hydroxy-1-naphtyl)phenylmethanol
  • 1-NAPHTHOLBENZEIN
  • 4,4'-[ALPHA-HYDROXYBENZYLIDENE]-DI-1-NAPHTHOL
  • 4-hydroxy-alpha-(4-hydroxynaphthyl)-alpha-phenylnaphthalene-1-methanol
  • 1-NAPHTHOLBENZEIN R. G., REAG. PH. EUR., INDICATOR FOR NON-AQUEOUS SYSTEMS
CAS:
6948-88-5
MF:
C27H20O3
MW:
392.45
EINECS:
230-116-9
Mol File:
6948-88-5.mol
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ALPHA-NAPHTHOLBENZEIN Chemical Properties

Melting point:
230-235 °C(lit.)
Boiling point:
477.16°C (rough estimate)
Density 
1.1098 (rough estimate)
refractive index 
1.5460 (estimate)
storage temp. 
Amber Vial, Room Temperature
solubility 
DMSO (Slightly), Methanol (Slightly)
pka
9.14±0.40(Predicted)
form 
Powder
color 
Red-brown
PH Range
8.5(YELLOW)-9.8(GREEN)
CAS DataBase Reference
6948-88-5(CAS DataBase Reference)
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Safety Information

Hazard Codes 
Xi
Risk Statements 
36/37/38
Safety Statements 
26-36-24/25
WGK Germany 
3
10-21
HS Code 
29071590

MSDS

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ALPHA-NAPHTHOLBENZEIN Usage And Synthesis

Chemical Properties

RED-BROWN POWDER

Uses

α-Naphtholbenzein can be used as an indicator during non-aqueous titration.

Purification Methods

-{4-hydroxynaphth-1-yl})-benzyl alcohol] B2319 M 392.5, m 122-125o, ~ 9.3. Crystallise the alcohol from EtOH, aqueous EtOH or glacial acetic acid. pKEst [Beilstein 6 H 1150.B2319]

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