Jump to content Jump to navigation menu

Phenol red, 5 g

extra pure
Pack Qty.
Pack.
Phenolsulphonphthalein
Empirical formula C19H14O5S
Molar mass (M) 354,38 g/mol
Melting point (mp) >300 °C
WGK 1
CAS No. 143-74-8
EG-Nr. 205-609-7

Indicator pH 6.5-8.2
Dissolve 0.1 g in 100 ml ethanol (20 %) or 0.04 g in 1.13 ml NaOH 0.1 mol/l and fill up with water to 100 ml

€21.40/Pack Qty. 

excl. VAT. | 5 g per Pack Qty.

Art. No. 1HA8.1

In stock
Delivery fast, simple and reliable!
from 6 Pack Qty. €20.33/Pack Qty.
from 24 Pack Qty. €19.26/Pack Qty.

Product details



Phenol red extra pure

Technical Information
Colour conversion yellow - red 
Transition range pH 6,5 - 8,2 
Phenol red
Selected quantity:   0
  1. Subtotal:  0.00
Art. No. Pack Qty. Pack. Price Quantity
1HA8.1 5 g glass

€21.40

1HA8.2 25 g glass

€53.65

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:

Type analysis

Assay≥95 %
Loss on drying≤1 %