Jump to content Jump to navigation menu

Bromocresol purple, 25 g

p.a., ACS
Pack Qty.
Empirical formula C21H16Br2O5S
Molar mass (M) 540,24 g/mol
Melting point (mp) 245 °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

€77.30/Pack Qty. 

excl. VAT. | 25 g per Pack Qty.

Art. No. 0317.2

In stock
Delivery fast, simple and reliable!
from 6 Pack Qty. €73.44/Pack Qty.
from 24 Pack Qty. €69.57/Pack Qty.
Carl Roth subscription service

Now recurring orders conveniently delivered as a subscription!

With the new Carl Roth Replenishment Service you can let products be ordered automatically which you need regularly in your lab!

How it works:

Put all products for your subscription in the desired quantity in the basket.


In the shopping cart, select the option "Order shopping cart as subscription" Order as subscription.


Set Starty point and interval for your subscription and submit order!

By the way: Through your account you can customize or delete your subscriptions anytime.

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


0317.2 25 g glass


In stock
In procurement
Not 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)