1-Naphtholbenzein - Used as an indicator 0.1g in 100ml isopropanol, PurReagent

PurReagent


Synonym:  p-naphtholbenzein
Linear Formula:  C27H18O2
Molecular Weight:  374.43 g/mol
CAS Number: 145-50-6

Properties

Vapour pressure No data available
Assay Purity NA
Refractive index n20/D 1.4875 
B pt. 463.44°C
M pt. 230-235°C(lit.)
Density 1.0946 g/cm3
Form Solid

Safety Information

Hazard Statement(s) H413
Precautionary Statement  P273 - P501
GHS Pictogram
Signal word Warning
HS Code 29145000
Storage Temp. Room Temperature
Storage Class 11 - Combustible Solids
UN Number NA

Description

Application
It is mainly used as a chemical indicator in analytical chemistry especially in titrations and spectrophotometric analysis for detecting metal ions and determining endpoints.

Purpose
The purpose of 1-Naphtholbenzein is to act as a sensitive indicator that helps identify chemical changes particularly in complexometric reactions by producing a distinct color change.

General Description
1-Naphtholbenzein is an organic compound belonging to the class of benzein dyes typically appearing as a colored indicator substance that changes color in response to variations in pH or metal ion concentration.