Sulphuric acid, 250 ml, glass
Molar mass (M) 98,08 g/mol
Density (D) 1,84 g/cm³
Boiling point (bp) 315 °C
Melting point (mp) -15 °C
ADR 8 II
CAS No. [7664-93-9]
excl. VAT. | 250 ml per Pack Qty.
Art. No. 4623.3
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Sulphuric acid ROTIPURAN® 96 %, p.a., ISO
|Suitable (as desiccant) for||Inert neutral and acidic gases and in dessicators|
|Not suitable (as desiccant) for||Unsaturated and other organic compounds, hydrogen sulphide, hydrogen iodide|
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Potassium permanganate Index
The permanganate index measuring method is carried out in the same way as the COD method, only with potassium permanganate instead of potassium dichromate. This technique is used in drinking water analysis.
Determination of biological oxygen demand (BOD)
BOD (biochemical oxygen demand) is a measure of the amount of oxygen that microorganisms need to break down the organic material in a water sample over a specific period of time. It is important to calculate the oxygen concentration at the start and end of the measuring time, which is usually five days and is expressed as an index (BOD5). Chemical, electrochemical or physical methods are used for this calculation.
Carl ROTH provides suitable acids and bases for different requirements!
- High purity
- High batch consistancy
- Detailed specifications
- Good price-performance ratio
Desiccants can absorb water and bind it chemically (reversibly or irreversibly) or physically. The main desiccants can be subdivided into four categories:
• non-renewable chemical desiccants
• renewable chemical desiccants
• silica gels
• molecular sieves
Determination of adsorbable organic halogen compounds (AOX)
AOX (adsorbable organic halogens, where X = Cl, Br, I) is a sum parameter that describes the amount of organic halogen compounds in substances such as water, soil and sewage sludge. This parameter is used primarily in waste water analysis. The method for calculating AOX levels is set out in DIN EN ISO 9562. The quantity of organically bound halogens in a water sample is measured using either the shaking method or the column method. In the shaking method, the AOX in a sample are bound to activated carbon by shaking. In the column method, the AOX in a sample are bound to activated carbon by the action of flushing the sample through a glass column filled with activated carbon. The quantity of activated carbon, which is defined precisely in each case, is then burned in an oxygen chamber and the hydrogen halide released is measured by means of argentometry. The amount of fluoroorganic compounds present cannot be measured argentometrically.
|Assay (acidim.)||≥95 %|
|Chloride (Cl)||≤0,00002 %|
|Nitrate (NO3)||≤0,00002 %|
|Phosphate (PO4)||≤0,00005 %|
|Ammonium (NH4)||≤0,0002 %|
|Silver (Ag)||≤0,000002 %|
|Aluminium (Al)||≤0,000005 %|
|Arsenic (As)||≤0,000001 %|
|Beryllium (Be)||≤0,000002 %|
|Calcium (Ca)||≤0,00002 %|
|Cadmium (Cd)||≤0,000002 %|
|Cobalt (Co)||≤0,000002 %|
|Chromium (Cr)||≤0,000005 %|
|Copper (Cu)||≤0,000001 %|
|Iron (Fe)||≤0,00001 %|
|Potassium (K)||≤0,00001 %|
|Lithium (Li)||≤0,000002 %|
|Magnesium (Mg)||≤0,000005 %|
|Manganese (Mn)||≤0,000001 %|
|Sodium (Na)||≤0,00005 %|
|Nickel (Ni)||≤0,000002 %|
|Lead (Pb)||≤0,000002 %|
|Strontium (Sr)||≤0,000002 %|
|Zinc (Zn)||≤0,000005 %|
|Ash content||≤0,0005 %|
|KMnO4 reducing substances||≤0,0002 %|