Product Datasheet and Specification
01781
1-Naphtholbenzein (pH Indicator)
Used as an indicator 0.1g in 100 ml 2-propanol. a-Naphtholbenzein; 4,4'-(a-Hydroxybenzylidene)di-1-naphthol; p-naphtholbenzein
CAS : 145-50-6
HS Code : 2914.50000
Molecular Formula : C27H18O2
Molecular Weight : 374.44
Shelf Life : 60 Months
Specifications
Appearance
Dark red to red-brown to brown-black to orange-brown powder |
Visual transition interval
Yellow to greenpH 8.2 (yellow to orange) to pH 10 (green-blue) |
Absorption maxima in acetic perchloric acid 0.1 mol/L
622 - 626 nm |