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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
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45-70480-50G 50 g
$342.00
1/EA
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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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