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Bromothymol blue, 5 g

p.a., ACS
Pack Qty.
3',3''-Dibromothymolsulphonphthaleine, BTB
Empirical formula C27H28Br2O5S
Molar mass (M) 624,40 g/mol
Melting point (mp) 202 °C
CAS No. [76-59-5]
EG-Nr. 200-971-2

Indicator pH 6.0-7.6
Dissolve 0,1 g in 100 ml ethanol (20 %) or 0,04 g in 0,64 ml NaOH 0,1 mol/l and fill up with water to 100 ml

Guarantee analysis

CHF33.50/Pack Qty. 

excl. VAT. | 5 g per Pack Qty.

Art. No. T117.1

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from 6 Pack Qty. CHF31.82/Pack Qty.
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Product details

Bromothymol blue p.a., ACS

Technical Information
Colour conversion yellow - blue 
Handling area pH 6,0 - 7,6 
Bromothymol blue
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Order No. Pack Qty. Pack. Price Quantity
T117.1 5 g glass CHF33.50
T117.2 25 g glass CHF81.10
T117.3 50 g glass CHF135.70
T117.7 100 g glass CHF238.70
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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

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

Appearancelight pink powder  
Appearance of solutioncomplies  
pH-transition range6,0 (yellow) - 7,6 (blue)  
Loss on drying (110 °C)≤3 %  

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