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4-(Phenylazo) diphenylamine, 5 g

≥97 %, p.a.
Pack Qty.
Empirical formula C18H15N3
Molar mass (M) 273,34 g/mol
Melting point (mp) 91 °C
CAS No. [101-75-7]
EG-Nr. 202-972-3

Indicator pH 1,2-2,5; for microscopy
insoluble in water, soluble in methanol

Guarantee analysis

€32.90/Pack Qty. 

excl. VAT. | 5 g per Pack Qty.

Art. No. 4538.1

Available from stock Karlsruhe
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from 6 Pack Qty. €31.26/Pack Qty.
from 24 Pack Qty. €29.61/Pack Qty.
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Product details

4-(Phenylazo) diphenylamine ≥97 %, p.a.

Technical Information
Colour conversion red - yellow 
Handling area pH 1,2 - 2,5 
4-(Phenylazo) diphenylamine
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Order No. Pack Qty. Pack. Price Quantity
4538.1 5 g glass €32.90
4538.2 25 g glass €89.50
Available from stock Karlsruhe
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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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Guarantee analysis

Appearanceorange to orange-brown powder  
Assay≥97,0 %  
Absorption max. (in EtOH)~411 nm  
pH-transition range1,2 (red)-2,5 (yellow)  

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