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
455989
Potassium hexacyanoferrate(II) trihydrate
≥99.95% trace metals basis
Synonym(s):
Potassium ferrocyanide, Yellow prussiate
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About This Item
Quality Segment
assay
≥99.95% trace metals basis
form
crystalline
reaction suitability
core: potassium
impurities
≤500.0 ppm Trace Metal Analysis
mp
70 °C (lit.)
solubility
water: soluble
SMILES string
O.O.O.[K+].[K+].[K+].[K+].N#C[Fe-4](C#N)(C#N)(C#N)(C#N)C#N
InChI
1S/6CN.Fe.4K.3H2O/c6*1-2;;;;;;;;/h;;;;;;;;;;;3*1H2/q;;;;;;-4;4*+1;;;
InChI key
NRYOVBQTVIWDNU-UHFFFAOYSA-N
Application
1 of 1
This Item | |||
|---|---|---|---|
| description ≥99.95% trace metals basis | description ACS reagent, 98.5-102.0% | description BioUltra, ≥99.5% (RT) | description BioUltra, ≥99.5% (RT) |
| form crystalline | form powder | form solid | form solid |
| solubility water: soluble | solubility water: soluble | solubility H2O: 0.5 M at 20 °C, clear, faintly yellow to greenish-yellow | solubility H2O: 0.5 M at 20 °C, clear, faintly yellow to greenish-yellow |
| assay ≥99.95% trace metals basis | assay 98.5-102.0% | assay ≥99.5% (RT) | assay ≥99.5% (RT) |
| Quality Level 100 | Quality Level 200 | Quality Level 200 | Quality Level 200 |
| impurities ≤500.0 ppm Trace Metal Analysis | impurities ≤0.005% Insoluble matter | impurities insoluble matter, passes filter test | impurities insoluble matter, passes filter test |
| mp 70 °C (lit.) | mp 70 °C (lit.) | mp 70 °C (lit.) | mp 70 °C (lit.) |
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Storage Class
11 - Combustible Solids
Flash Point (°F)
Not applicable
Flash Point (°C)
Not applicable
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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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