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
1.05033
Potassium hydroxide
pellets for analysis EMSURE®
Synonym(s):
Potash caustic, Caustic potash
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About This Item
Recommended Products
Agency
suitable for SM 5210
Quality Level
vapor pressure
1 mmHg ( 719 °C)
product line
EMSURE®
Assay
≥85.0% KOH basis (acidimetric)
form
solid
potency
333 mg/kg LD50, oral (Rat)
pH
14 (20 °C, 56 g/L in H2O)
mp
361 °C (lit.)
solubility
1130 g/L
anion traces
carbonate (K2CO3): ≤1.0%
chloride (Cl-): ≤0.005%
phosphate (PO43-): ≤0.0005%
silicate (as SiO2): ≤0.005%
sulfate (SO42-): ≤0.0005%
cation traces
Al: ≤0.001%
Ca: ≤0.001%
Cu: ≤0.0002%
Fe: ≤0.0005%
N: ≤0.0005%
Na: ≤0.5%
Ni: ≤0.0005%
Pb: ≤0.0005%
Zn: ≤0.0025%
heavy metals (as Pb): ≤0.0005%
storage temp.
2-30°C
SMILES string
[OH-].[K+]
InChI
1S/K.H2O/h;1H2/q+1;/p-1
InChI key
KWYUFKZDYYNOTN-UHFFFAOYSA-M
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Analysis Note
Carbonate (as K₂CO₃): ≤ 1.0 %
Chloride (Cl): ≤ 0.005 %
Phosphate (PO₄): ≤ 0.0005 %
Silicate (SiO₂): ≤ 0.005 %
Sulfate (SO₄): ≤ 0.0005 %
Total nitrogen (N): ≤ 0.0005 %
Heavy metals (as Pb): ≤ 0.0005 %
Al (Aluminium): ≤ 0.001 %
Ca (Calcium): ≤ 0.001 %
Cu (Copper): ≤ 0.0002 %
Fe (Iron): ≤ 0.0005 %
Na (Sodium): ≤ 0.5 %
Ni (Nickel): ≤ 0.0005 %
Pb (Lead): ≤ 0.0005 %
Zn (Zinc): ≤ 0.0025 %
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Signal Word
Danger
Hazard Statements
Precautionary Statements
Hazard Classifications
Acute Tox. 4 Oral - Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1A
Storage Class Code
8B - Non-combustible corrosive hazardous materials
WGK
WGK 1
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
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This page is intended to make it easier to find the consumables you need based on the analytical method you’re using. Methods included on this page come from the EPA, Standard Methods and ASTM.
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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/449/386/product-dating-information-mk.pdfHelpful?
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