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Thymolphthalein, 50 g

p.a., ACS
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Empirical formula C28H30O4
Molar mass (M) 430,55 g/mol
Density (D) 1,111 g/cm³
Melting point (mp) 253 °C
WGK 1
CAS No. 125-20-2
EG-Nr. 204-729-7

Indicator pH 8.8-10.5; alternative for phenolphthaleine
Dissolve 0.1 g in 100 ml of ethanol (50 %)

€160.20/Pack Qty. 

excl. VAT. | 50 g per Pack Qty.

Art. No. HN97.3

In stock
Delivery fast, simple and reliable!
from 6 Pack Qty. €152.19/Pack Qty.
from 24 Pack Qty. €144.18/Pack Qty.

Product details



Thymolphthalein p.a., ACS

Technical Information
Colour conversion colourless - blue 
Transition range pH 8,8 - 10,5 
Thymolphthalein
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Art. No. Pack Qty. Pack. Price Quantity
HN97.1 5 g glass

€26.35

HN97.2 10 g glass

€44.65

HN97.3 50 g glass

€160.20

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Selected quantity:   0
  1. Subtotal:  0.00

Downloads / MSDS


General information

Acid Value Determination

The acid number characterises the acidic components of the fats. For this purpose, the sample is dissolved in a solvent and titrated against phenolphthalein with potassium hydroxide solution. Only free fatty acids are recorded. The fatty acids bound in the glycerides are not determined.


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Guarantee analysis

pH-transition range8,8 (clear)-10,5 (blue)
Appearance of solutioncomplies