If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdf
1.12080
Sulfuric acid
98%, for analysis EMSURE®
Synonym(e):
Schwefelsäure
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Produktname
Schwefelsäure 98 %, for analysis EMSURE®
Dampfdichte
<0.3 (25 °C, vs air)
Qualitätsniveau
Dampfdruck
0.0001 hPa ( 20 °C)
1 mmHg ( 146 °C)
Produktlinie
EMSURE®
Assay
≥98% (alkalimetric)
Form
liquid
Verunreinigungen
≤0.0002% Substances reducing potassium permanganate (as SO2)
Glührückstand
≤0.0005%
Farbe
APHA: ≤10
pH-Wert
0.3 (25 °C, 49 g/L in H2O)
bp
~290 °C (lit.)
mp (Schmelzpunkt)
-20 °C
Dichte
1.840 g/mL at 25 °C (lit.)
Anionenspuren
chloride (Cl-): ≤0.00001%
nitrate (NO3-): ≤0.00002%
phosphate (PO43-): ≤0.00005%
Kationenspuren
Ag: ≤0.000002%
Al: ≤0.000005%
As: ≤0.000001%
Ba: ≤0.000005%
Be: ≤0.000001%
Bi: ≤0.00001%
Ca: ≤0.00002%
Cd: ≤0.000002%
Co: ≤0.000001%
Cr: ≤0.000005%
Cu: ≤0.000001%
Fe: ≤0.00001%
Ge: ≤0.000005%
K: ≤0.00001%
Li: ≤0.000001%
Mg: ≤0.000005%
Mn: ≤0.000001%
Mo: ≤0.000005%
NH4+: ≤0.0002%
Na: ≤0.00005%
Ni: ≤0.000002%
Pb: ≤0.000002%
Se: ≤0.0001%
Sr: ≤0.000002%
Ti: ≤0.00001%
Tl: ≤0.000005%
V: ≤0.000001%
Zn: ≤0.000005%
Zr: ≤0.00001%
SMILES String
OS(O)(=O)=O
Lagertemp.
no temp limit
InChI
1S/H2O4S/c1-5(2,3)4/h(H2,1,2,3,4)
InChIKey
QAOWNCQODCNURD-UHFFFAOYSA-N
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Dieser Artikel | 1.00716 | 1.00731 | 1.01833 |
|---|---|---|---|
| assay ≥98% (alkalimetric) | assay - | assay 95-97% (alkalimetric) | assay 95-97% (alkalimetric) |
| Quality Level 300 | Quality Level 300 | Quality Level 300 | Quality Level 200 |
| form liquid | form liquid | form liquid | form liquid |
| storage temp. no temp limit | storage temp. no temp limit | storage temp. no temp limit | storage temp. no temp limit |
| pH 0.3 (25 °C, 49 g/L in H2O) | pH - | pH 0.3 (25 °C, 49 g/L in H2O) | pH 0.3 (25 °C, 49 g/L in H2O) |
| impurities ≤0.0002% Substances reducing potassium permanganate (as SO2) | impurities ≤0.010 ppm As (Arsenic), ≤0.010 ppm Be (Beryllium), ≤0.010 ppm Co (Cobalt), ≤0.010 ppm Cu (Copper), ≤0.010 ppm Li (Lithium), ≤0.010 ppm Mn (Manganese), ≤0.010 ppm Sr (Strontium), ≤0.010 ppm V (Vanadium), ≤0.020 ppm Ag (Silver), ≤0.020 ppm Cd (Cadmium), ≤0.020 ppm Ni (Nickel), ≤0.020 ppm Pb (Lead), ≤0.050 ppm Al (Aluminium), ≤0.050 ppm Ba (Barium), ≤0.050 ppm Cr (Chromium), ≤0.050 ppm Ge (Germanium), ≤0.050 ppm Mg (Magnesium), ≤0.050 ppm Mo (Molybdenum), ≤0.050 ppm Tl (Thallium), ≤0.100 ppm Bi (Bismuth), ≤0.100 ppm Fe (Iron), ≤0.100 ppm K (Potassium), ≤0.100 ppm Ti (Titanium), ≤0.100 ppm Zn (Zinc), ≤0.100 ppm Zr (Zirconium), ≤0.2 ppm Nitrate (NO3), ≤0.200 ppm Ca (Calcium), ≤0.5 ppm Chloride (Cl), ≤0.500 ppm Na (Sodium), ≤2 ppm NH? (Ammonium), ≤2 ppm Substances reducing potassium permanganate (as SO2) | impurities - | impurities ≤2 ppm Substances reducing potassium permanganate (as SO2) |
Anwendung
- Simultaneous determination of monochloropropanediol esters and glycidyl esters in vegetable oils by acidic transesterification-gas chromatography-mass spectrometry: In dieser Studie von Wang et al. wird eine Methode zum Nachweis schädlicher Verbindungen in Pflanzenölen vorgestellt, bei der Schwefelsäure für die Umesterung verwendet wird, gefolgt von einer GC-MS-Analyse (Wang et al., 2022).
- Evaluation of an improved acid hydrolysis-HPLC assay for the acetyl content in chitin and chitosan: Ng et al. entwickelten eine verbesserte HPLC-Methode zur Messung des Acetylgehalts in Biopolymeren, bei der Schwefelsäure zur Hydrolyse verwendet wird, um eine genaue Quantifizierung zu gewährleisten (Ng et al., 2006).
Hinweis zur Analyse
Farbe: ≤ 10 Hazen
Chlorid (Cl): ≤ 0,00001 %
Nitrat (NO₃): ≤ 0,00002 %
Phosphat (PO₄): ≤ 0,00005 %
Ag (Silber): ≤ 0,000002 %
Al (Aluminium): ≤ 0,000005 %
As (Arsen): ≤ 0,000001 %
Ba (Barium): ≤ 0,000005 %
Be (Beryllium): ≤ 0,000001 %
Bi (Bismut): ≤ 0,00001
Ca (Calcium): ≤ 0,00002 %
Cd (Cadmium): ≤ 0,000002 %
Co (Cobalt): ≤ 0,000001 %
Cr (Chrom): ≤ 0,000005 %
Cu (Kupfer): ≤ 0,000001 %
Fe (Eisen): ≤ 0,00001
Ge (Germanium): ≤ 0,000005 %
K (Kalium): ≤ 0,00001 %
Li (Lithium): ≤ 0,000001 %
Mg (Magnesium): ≤ 0,000005 %
Mn (Mangan): ≤ 0,000001 %
Mo (Molybdän): ≤ 0,000005 %
NH₄ (Ammonium): ≤ 0,0002 %
Na (Natrium): ≤ 0,00005 %
Ni (Nickel): ≤ 0,000002 %
Pb (Blei): ≤ 0,000002 %
Se (Selen): ≤ 0,0001 %
Sr (Strontium): ≤ 0,000002 %
Ti (Titan): ≤ 0,00001
Tl (Thallium): ≤ 0,000005 %
V (Vanadium)*: ≤ 0,000001 %
Zn (Zink): ≤ 0,000005 %
Zr (Zirkonium): ≤ 0,00001
Kaliumpermanganat reduzierende Substanzen (als SO₂): ≤ 0,0002 %
Glührückstand: ≤ 0,0005 %
Verfallsdatum: siehe Produktetikett
Rechtliche Hinweise
Signalwort
Danger
H-Sätze
Gefahreneinstufungen
Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1A
Lagerklassenschlüssel
8B - Non-combustible, corrosive hazardous materials
WGK
WGK 1
Flammpunkt (°F)
Not applicable
Flammpunkt (°C)
Not applicable
Analysenzertifikate (COA)
Suchen Sie nach Analysenzertifikate (COA), indem Sie die Lot-/Chargennummer des Produkts eingeben. Lot- und Chargennummern sind auf dem Produktetikett hinter den Wörtern ‘Lot’ oder ‘Batch’ (Lot oder Charge) zu finden.
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Verwandter Inhalt
Glass bottles are ideal for storing acids because they are inert and offer a long shelf life.
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How can I determine the shelf life / expiration / retest date of this product?
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How is shipping temperature determined? And how is it related to the product storage temperature?
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Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf
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