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Bromocresol purple, 5 g

p.a., ACS
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Pack.
5',5-Dibromo-cresolsulphonephthaleine
Empirical formula C21H16Br2O5S
Molar mass (M) 540,24 g/mol
Melting point (mp) 242 °C
WGK 1
CAS No. [115-40-2]
EG-Nr. 204-087-8

Indicator pH 5.2-6.8

Guarantee analysis

€20.50/Pack Qty. 

excl. VAT. | 5 g per Pack Qty.

Art. No. 0317.1

Available from stock Karlsruhe
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from 6 Pack Qty. €19.48/Pack Qty.
from 24 Pack Qty. €18.45/Pack Qty.
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Product details



Technical Information
Colour conversion yellow - purple  
Handling area pH 5,2 - 6,8  
Instructions for use, addition 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  
Bromocresol purple
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Order No. Pack Qty. Pack. Price Quantity
0317.1 5 g glass €20.50
0317.2 25 g glass €64.50
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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

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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