α-Naphtholbenzein

SIAL/70480 - indicator (pH 8.2-10.0)

Synonym: 4,4′-(α-Hydroxybenzylidene)di-1-naphthol; p-naphtholbenzein

CAS Number: 145-50-6
Empirical Formula (Hill Notation): C₂₇H₁₈O₂
Molecular Weight: 374.43
EC Number: 205-656-3
Linear Formula: C₂₇H₁₈O₂
Product Type: Chemical

Catalog Number	PKG Qty.	Price	Quantity


45-70480-10G	10 g	$105.00 1/EA		Add To Favorites
45-70480-50G	50 g	$342.00 1/EA		Add To Favorites

Properties
Descriptions
Safety Info.
Basic Data

form	powder
grade	indicator (pH 8.2-10.0)
InChI	1S/C27H18O2/c28-25-16-14-23(19-10-4-6-12-21(19)25)27(18-8-2-1-3-9-18)24-15-17-26(29)22-13-7-5-11-20(22)24/h1-17,28H/b27-24-
InChI key	VDDWRTZCUJCDJM-PNHLSOANSA-N
mp	230-235 °C (lit.)
Quality Level	100
SMILES string	Oc1ccc(C(c2ccccc2)=C3C=CC(=O)c4ccccc34)c5ccccc15
technique(s)	UV/Vis spectroscopy: suitable

Application:	α-Naphtholbenzein has been used as indicator during sequential injection analysis technique done for acid-base titrations.
General description:	α-Naphtholbenzein is a dye generally used during acid-base titration method.

Hazard Codes	Xi
Risk Statements	36/37/38
Safety Statements	26
RIDADR	NONH for all modes of transport
WGK Germany	WGK 3
Flash Point(F)	Not applicable
Flash Point(C)	Not applicable

mp	230-235 °C (lit.)
UNSPSC	12000000

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