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Bromocresol purple, 5 g

p.a., ACS
Pack Qty.
Empirical formula C21H16Br2O5S
Molar mass (M) 540,24 g/mol
Melting point (mp) 242 °C
CAS No. [115-40-2]
EG-Nr. 204-087-8

Indicator pH 5.2-6.8
Dissolve 0,1 g in 100 ml ethanol (20 %) or 0,04 g in 0,74 ml NaOH 0,1 mol/l and fill up with water to 100 ml

Guarantee analysis

CHF28.70/Pack Qty. 

excl. VAT. | 5 g per Pack Qty.

Art. No. 0317.1

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Product details

Bromocresol purple p.a., ACS

Technical Information
Colour conversion yellow - purple 
Handling area pH 5,2 - 6,8 
Bromocresol purple
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Order No. Pack Qty. Pack. Price Quantity
0317.1 5 g glass CHF28.70
0317.2 25 g glass CHF90.30
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General information

Indicators and Dyes

Indicators and DyesCarl 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

Dye content≥89,0 %  
Appearance of solutioncomplies  
Loss on drying (110 °C)≤1 %  
Melting point241-245 °C  
pH-transition range5.2 (yellow) - 6.8 (purple)  

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