Technical Data Sheet
Thymolphthalein, 5 g
From Carl ROTH
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
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
Dissolve 0.1 g in 100 ml of ethanol (50 %)
Indicator pH 8.8-10.5; alternative for phenolphthaleine
Indicator pH 8.8-10.5; alternative for phenolphthaleine
€27.45/Pack Qty.
excl. VAT. | 5 g per Pack Qty.
Art. No. HN97.1
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Product details
Thymolphthalein p.a., ACS
Technical Information
| Colour conversion | colourless - blue |
| Transition range pH | 8,8 - 10,5 |
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Thymolphthalein
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| Art. No. | Pack Qty. | Pack. | Price | Quantity | |
|---|---|---|---|---|---|
| HN97.1 | 5 g | glass |
€27.45 |
|
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| HN97.2 | 10 g | glass |
€46.15 |
|
|
| HN97.3 | 50 g | glass |
€166.65 |
|
|
|
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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.
Certificates of Analysis
Guarantee analysis
| pH-transition range | 8,8 (clear)-10,5 (blue) |
| Appearance of solution | complies |