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
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| Voi/SKU | Disponibilità | Prezzo |
|---|---|---|
250 g | Per conoscere la disponibilità, visualizza il carrello | CHF 53.20 |
1 kg | Per conoscere la disponibilità, visualizza il carrello | CHF 112.00 |
Informazioni su questo articolo
Quality Segment
grade
ACS reagent, puriss. p.a.
assay
≥99.0% (RT)
form
powder or crystals
impurities
≤0.001% total nitrogen (N)
pH
2.5-4.5 (25 °C, 27 g/L)
solubility
water: soluble (52.77 g/l soluble (68 °F / 20 °C) pH: 3.8)
anion traces
chloride (Cl-): ≤10 mg/kg
cation traces
Ag: ≤5 mg/kg, Al: ≤5 mg/kg, Ba: ≤5 mg/kg, Bi: ≤5 mg/kg, Ca: ≤50 mg/kg, Cd: ≤5 mg/kg, Co: ≤5 mg/kg, Cr: ≤5 mg/kg, Cu: ≤5 mg/kg, Fe: ≤5 mg/kg, Li: ≤5 mg/kg, Mg: ≤100 mg/kg, Mn: ≤1 mg/kg, Mo: ≤5 mg/kg, Na: ≤200 mg/kg, Ni: ≤5 mg/kg, Pb: ≤5 mg/kg, Sr: ≤5 mg/kg, Tl: ≤5 mg/kg, Zn: ≤5 mg/kg
application(s)
forensics and toxicology
SMILES string
[K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O
InChI
1S/2K.H2O8S2/c;;1-9(2,3)7-8-10(4,5)6/h;;(H,1,2,3)(H,4,5,6)/q2*+1;/p-2
InChI key
USHAGKDGDHPEEY-UHFFFAOYSA-L
General description
Application
- Iniziatore di polimerizzazione nella sintesi della poliacrilammide via polimerizzazione radicale dell′acrilammide.
- Come agente ossidante nell′ossidazione fotochimica di soluzioni acquose di atrazina.
K2S2O8 può avere anche i seguenti impieghi:
- Il sistema catalitico K2S2O8-AgSCF3 viene usato nella trifluorometiltiolazione in condizioni blande dei legami C(sp3)-H non attivati. Nel processo, l′impiego di K2S2O8 gioca un ruolo di rilievo nell′attivazione del legame C-H e nell′ossidazione di AgSCF3.
- K2S2O8-FeCl3 è utilizzato nella tiocianazione dei 2H-indazoli che utilizza tiocianato di ammonio come agente tiocianante.
Other Notes
1 of 1
Questo articolo | |||
|---|---|---|---|
| description puriss. p.a., ACS reagent, ≥99.0% (RT) | description free-flowing, Redi-Dri™, ACS reagent, ≥99.0% | description 99.99% trace metals basis | description ACS reagent, ≥99.0% |
| form powder or crystals | form powder | form solid | form powder or crystals |
| solubility water: soluble (52.77 g/l soluble (68 °F / 20 °C) pH: 3.8) | solubility water: soluble (52.77 g/l at 20 °C (68 °F)) | solubility water: soluble | solubility water: soluble (52.77 g/l at 20 °C (68 °F)) |
| assay ≥99.0% (RT) | assay ≥99.0% | assay 99.99% trace metals basis | assay ≥99.0% |
| Quality Level 200 | Quality Level - | Quality Level 200 | Quality Level 200 |
| grade ACS reagent, puriss. p.a. | grade ACS reagent | grade - | grade ACS reagent |
| impurities ≤0.001% total nitrogen (N) | impurities - | impurities ≤150.0 ppm Trace Metal Analysis | impurities ≤0.005% insolubles, ≤0.001% Cl compounds |
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Danger
Hazard Classifications
Acute Tox. 4 Oral - Eye Irrit. 2 - Ox. Sol. 3 - Resp. Sens. 1 - Skin Irrit. 2 - Skin Sens. 1 - STOT SE 3
target_organs
Respiratory system
Classe di stoccaggio
5.1B - Oxidizing hazardous materials
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges
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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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