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o-Cresol red, 5 g

Pack Qty.
Empirical formula C21H18O5S
Molar mass (M) 382,44 g/mol
Melting point (mp) >300 °C
CAS No. 1733-12-6
EG-Nr. 217-064-2

Indicator pH 0,2-1,8 and pH 7,0-8,8
Dissolve 0.1 g in 100 ml ethanol (20 %) or 0.04 g in 1.05 ml NaOH 0.1 mol/l and make up to 100 ml with water

€24.65/Pack Qty. 

excl. VAT. | 5 g per Pack Qty.

Art. No. KK15.1

In stock
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from 6 Pack Qty. €23.42/Pack Qty.
from 24 Pack Qty. €22.18/Pack Qty.

Product details

o-Cresol red p.a.

Technical Information
Colour conversion red - yellow 
orange - purple 
Transition range pH 0,2 - 1,8 
7,0 - 8,8 
o-Cresol red
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  1. Subtotal:  0.00
Art. No. Pack Qty. Pack. Price Quantity
KK15.1 5 g glass


KK15.2 10 g glass


KK15.3 25 g glass


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In procurement
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Selected quantity:   0
  1. Subtotal:  0.00

Downloads / MSDS

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

You can search for and download your certificate of analysis for the selected product here. Please provide your batch number.
The following analysis certificates have been found:

Guarantee analysis

Appearancegreen to dark red to dark brown powder
Transition range6.5 - 8.8
Dye content≥85 %
Solubility in ethanolcomplies