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Quninaldine red, 5 g

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2-(4-Dimethylaminostyryl)-1-ethylquinolinium iodide
Empirical formula C21H23IN2
Molar mass (M) 430,32 g/mol
Melting point (mp) 240 °C
CAS No. 117-92-0
EG-Nr. 204-221-5

Indicator pH 1.4-3.2, for non-aqueous acid-base titrations
Dissolve 0.1 g in 100 ml ethanol

€59.70/Pack Qty. 

excl. VAT. | 5 g per Pack Qty.

Art. No. 1LA9.2

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Product details

Quninaldine red pure

Technical Information
Colour conversion colourless - red violet 
Soluble in Alcohol, Acetone, Chloroforme, Acetic Acid 
Transition range pH 1,4 - 3,2 
Quninaldine red
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Art. No. Pack Qty. Pack. Price Quantity
1LA9.1 1 g glass


1LA9.2 5 g glass


1LA9.3 10 g glass


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General information

Indicators and Dyes

Carl ROTH offers many indicators and dyes of high purity, which can be used in special applications.

Certificates of Analysis

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The following analysis certificates have been found:

Type analysis

Dye content≥95 %
Appearancegreen powder
Maximum absorption527-533 nm