Diethyl ether, 1 l, glass
Molar mass (M) 74,12 g/mol
Density (D) 0,71 g/cm³
Boiling point (bp) 34,59 °C
Flash point (flp) -40 °C
Melting point (mp) -116 °C
ADR 3 I
CAS No. [60-29-7]
excl. VAT. | 1 l per Pack Qty.
Art. No. 3942.1
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.
- Subtotal: 0.00
|Order No.||Pack Qty.||Pack.||Price||Quantity|
Available at short notice
Delivery date currently unknown
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.
Determination of Fat
Fat analysis is used to determine the fat content and fat composition of foodstuffs. Individual components or total fats levels can be calculated depending on the purpose of testing. Different components are subject to different procedures by law, such as the Gerber method or the Van Gulik technique.
• Add sample to 60 ml water
• Subsequently add, while mixing after each step:
a) 5 ml Carrez-I-solution, Art. No. 9944
(or 7,2 g zinc sulphate heptahydrate, Art. No. K301 ad 100 ml)
b) 5 ml Carrez-II-solution, Art. No. 9950
(or 3,6 g potassium hexacyanoferrate(II), Art. No. P745 ad 100 ml)
• Adjust pH to 7,5 - 8,5 by adding NaOH (0,1 M) Art.No. K020
• Fill volumetric flask up to mark, mix, and filter
|Assay (GC)||≥99,5 %|
|Density (20 °C)||0,714-0,716|
|Water (KF)||≤0,1 %|
|Acetone (GC)||≤0,01 %|
|Ethanol (GC)||≤0,1 %|
|Methanol (GC)||≤0,1 %|
|Säuren (CH3COOH)||≤0,01 %|
|Peroxides (as H2O2)||unverifiable|
|Aluminium (Al)||≤0,00005 %|
|Barium (Ba)||≤0,00001 %|
|Lead (Pb)||≤0,000001 %|
|Cadmium (Cd)||≤0,000005 %|
|Calcium (Ca)||≤0,00005 %|
|Chromium (Cr)||≤0,000002 %|
|Cobalt (Co)||≤0,000002 %|
|Iron (Fe)||≤0,000001 %|
|Copper (Cu)||≤0,000001 %|
|Manganese (Mn)||≤0,000002 %|
|Nickel (Ni)||≤0,00001 %|
|Zinc (Zn)||≤0,000001 %|
|Tin (Sn)||≤0,00001 %|
|Evaporation residue||≤0,002 %|
|stabilised with ca. 5 ppm BHT.|