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Bromocresol purple, 25 g

p.a., ACS
Pack Qty.
Pack.
5',5''-Dibromo-cresolsulphonephthaleine
Empirical formula C21H16Br2O5S
Molar mass (M) 540,24 g/mol
Melting point (mp) 245 °C
WGK 1
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

€90.20/Pack Qty. 

excl. VAT. | 25 g per Pack Qty.

Art. No. 0317.2

In production
from 6 Pack Qty. €85.69/Pack Qty.
from 24 Pack Qty. €81.18/Pack Qty.

Product details



Bromocresol purple p.a., ACS

Technical Information
Colour conversion yellow - purple 
Transition range pH 5,2 - 6,8 
Bromocresol purple
Selected quantity:   0
  1. Subtotal:  0.00
Art. No. Pack Qty. Pack. Price Quantity
0317.1 5 g glass

€28.50

0317.2 25 g glass

€90.20

In stock
Available
In procurement
No longer available
Delivery date currently unknown
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

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)