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
Größe auswählen
| Ihnen/SKU | Verfügbarkeit | Preis |
|---|
Über diesen Artikel
Produktname
Schwefelsäure 98 %, for analysis EMSURE®
vapor density
<0.3 (25 °C, vs air)
Quality Segment
vapor pressure
0.0001 hPa ( 20 °C), 1 mmHg ( 146 °C)
product line
EMSURE®
assay
≥98% (alkalimetric)
form
liquid
impurities
≤0.0002% Substances reducing potassium permanganate (as SO2)
ign. residue
≤0.0005%
color
APHA: ≤10
pH
0.3 (25 °C, 49 g/L in H2O)
bp
~290 °C (lit.)
mp
-20 °C
density
1.840 g/mL at 25 °C (lit.)
anion traces
chloride (Cl-): ≤0.00001%, nitrate (NO3-): ≤0.00002%, phosphate (PO43-): ≤0.00005%
SMILES string
OS(O)(=O)=O
cation traces
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%
storage temp.
no temp limit
InChI
1S/H2O4S/c1-5(2,3)4/h(H2,1,2,3,4)
InChI key
QAOWNCQODCNURD-UHFFFAOYSA-N
Application
- 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).
Analysis Note
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
Legal Information
1 of 1
Dieser Artikel | |||
|---|---|---|---|
| assay ≥98% (alkalimetric) | assay - | assay 95-97% (alkalimetric) | assay ≥97.5% (alkalimetric) |
| Quality Level 300 | Quality Level 300 | Quality Level 200 | Quality Level 300 |
| 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) |
| bp ~290 °C (lit.) | bp 103 °C/1013 hPa | bp ~290 °C (lit.) | bp ~290 °C (lit.) |
Still not finding the right product?
Explore all of our products under Schwefelsäure 98 %
signalword
Danger
Hazard Classifications
Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1A
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
hcodes
Lagerklasse
8B - Non-combustible corrosive hazardous materials
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.
Besitzen Sie dieses Produkt bereits?
In der Dokumentenbibliothek finden Sie die Dokumentation zu den Produkten, die Sie kürzlich erworben haben.
-
How can I determine the shelf life / expiration / retest date of this product?
1 answer-
Helpful?
-
-
How is shipping temperature determined? And how is it related to the product storage temperature?
1 answer-
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
Helpful?
-

