2-Propanol, 2.5 l, plastic
Molar mass (M) 60,10 g/mol
Density (D) 0,79 g/cm³
Boiling point (bp) 83 °C
Flash point (flp) 12 °C
Melting point (mp) -89 °C
ADR 3 II
CAS No. [67-63-0]
excl. VAT. | 2.5 l per Pack Qty.
Art. No. 6752.4
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Isopropanol is well suited as clearing agent for paraffin-embedding, because it is compatible to melted paraffin: After dehydrating with isopropanol the sample is incubated in a mixture of isopropanol abs. and paraffin (1:1) at approx. 60 °C. After a further incubation step with pure paraffin, the sample is embedded as usual.
This method is particularly suitable to smooth organs. Since embedding can start immediately after alcohol step, the working process is shortened significantly.
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Carl ROTH also offers reagents suitable for food analysis.
On the following pages, you will find the determination of
• Nitrogen according to Kjeldahl
and the determination of the
• Iodine value
• Acid value
• Peroxide value
• Saponification value
as well as other determining factors such as
• Hydroxyl value
• Fluoride ions
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.
|Assay (GC)||≥99,8 %|
|Solubility in H2O||complies|
|Density (d 20 °C/4 °C)||0,784-0,787|
|Acetone (GC)||≤0,01 %|
|Ethanol (GC)||≤0,01 %|
|Methanol (GC)||≤0,01 %|
|Evaporation residue||≤0,001 %|
|Carbonylic compounds (as CO)||≤0,002 %|
|Matter discoloured by H2SO4 (Hazen)||≤10|
|Aluminium (Al)||≤0,00005 %|
|Barium (Ba)||≤0,00001 %|
|Lead (Pb)||≤0,00001 %|
|Boron (B)||≤0,000002 %|
|Cadmium (Cd)||≤0,000005 %|
|Calcium (Ca)||≤0,00005 %|
|Chromium (Cr)||≤0,000002 %|
|Iron (Fe)||≤0,00001 %|
|Cobalt (Co)||≤0,000002 %|
|Copper (Cu)||≤0,000002 %|
|Magnesium (Mg)||≤0,00001 %|
|Manganese (Mn)||≤0,000002 %|
|Nickel (Ni)||≤0,000002 %|
|Zinc (Zn)||≤0,00001 %|
|Tin (Sn)||≤0,00001 %|