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Bromothymol blue, 5 g

p.a., ACS
Pack Qty.
Pack.
3',3''-Dibromothymolsulphonphthaleine, BTB
Empirical formula C27H28Br2O5S
Molar mass (M) 624,40 g/mol
Melting point (mp) 202 °C
WGK 1
CAS No. [76-59-5]
EG-Nr. 200-971-2

Indicator pH 6.0-7.6

Guarantee analysis

€25.70/Pack Qty. 

excl. VAT. | 5 g per Pack Qty.

Art. No. T117.1

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Product details



Technical Information
Colour conversion yellow - blue  
Handling area pH 6,0 - 7,6  
Instructions for use, addition 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  
Bromothymol blue
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Order No. Pack Qty. Pack. Price Quantity
T117.1 5 g glass €25.70
T117.2 25 g glass €62.25
T117.3 50 g glass €104.20
T117.7 100 g glass €183.30
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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.


Analysis certificates

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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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