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1.06202

Supelco

1-Naphtholbenzein

indicator Reag. Ph Eur

Synonym(s):
1-Naphtholbenzein
Empirical Formula (Hill Notation):
C27H18O2
CAS Number:
Molecular Weight:
374.43
EC Index Number:
205-656-3

Agency/Method

reag. Ph. Eur.

Quality Level

mp

243-245 °C

bulk density

120‑300 kg/m3

storage temp.

2-30°C

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-SOYKGTTHSA-N

Related Categories

Analysis Note

Identity (IR-spectrum): passes test
Identity (UV/VIS-Spectrum): passes test
Absorption maximum λmax.(perchloric acid (0,1 mol/l) in acetic acid): 622 - 626 nm
Spec. Absorptivity A 1%/1cm (λmax; 0.005 g/l;perchloric acid (0,1 mol/l) in acetic acid;calculated on dried substance): 640 - 950
Transition range: pH 8,0 - pH 9,6; apricot - turquoiseblue
Loss on Drying (105°C): ≤ 7 %
Suitability as indicator (for non-aqueous titration): passes test

Storage Class Code

11 - Combustible Solids

WGK Germany

WGK 3

Flash Point F

Not applicable

Flash Point C

Not applicable

Certificate of Analysis

Certificate of Origin

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