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
1.05091
Potassium peroxodisulfate
for analysis EMSURE®
Synonym(s):
Potassium peroxodisulfate, Potassium persulfate
Select a Size
| Size/SKU | Availability | Price |
|---|---|---|
250 g | Estimated to ship onSeptember 02, 2026 | $43.00 |
1 kg | Estimated to ship TODAY | $108.00 |
About This Item
Quality Segment
grade
reagent grade
product line
EMSURE®
assay
≥99.0% (iodometric)
form
solid
potency
802 mg/kg LD50, oral (Rat)
pH
3.2 (20 °C, 50 g/L in H2O)
mp
100 °C (decomposition)
solubility
50 g/L
density
2.48 g/cm3 at 20 °C
bulk density
1150 kg/m3
anion traces
chloride (Cl-): ≤0.001%
cation traces
Fe: ≤0.001%, Mn: ≤0.0001%, heavy metals (as Pb): ≤0.003%
storage temp.
2-30°C
SMILES string
[K+].[K+].[S](=O)(=O)([O-])OO[S](=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
Analysis Note
Chloride (Cl): ≤ 0.001 %
Heavy metals (as Pb): ≤ 0.003 %
Fe (Iron): ≤ 0.001 %
Mn (Manganese): ≤ 0.0001 %
Legal Information
1 of 1
This Item | |||
|---|---|---|---|
| description for analysis EMSURE® | description puriss. p.a., ACS reagent, ≥99.0% (RT) | description free-flowing, Redi-Dri™, ACS reagent, ≥99.0% | description ACS reagent, ≥99.0% |
| form solid | form powder or crystals | form powder | form powder or crystals |
| assay ≥99.0% (iodometric) | assay ≥99.0% (RT) | assay ≥99.0% | assay ≥99.0% |
| solubility 50 g/L | 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 (52.77 g/l at 20 °C (68 °F)) |
| Quality Level 300 | Quality Level 200 | Quality Level - | Quality Level 200 |
| grade reagent grade | grade ACS reagent, puriss. p.a. | grade ACS reagent | grade ACS reagent |
| mp 100 °C (decomposition) | mp - | mp - | mp - |
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signalword
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
Storage Class
5.1B - Oxidizing hazardous materials
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
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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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