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
U4883
Urea
8 M (after reconstitution with 16 mL high purity water)
Synonym(s):
Urea solution, Carbamide, Carbonyldiamide
Select a Size
| Size/SKU | Availability | Price |
|---|---|---|
6 x 25 mL | Estimated to ship onOctober 21, 2026fromMILWAUKEE | $73.30 |
About This Item
form
powder
Quality Segment
concentration
8 M (after reconstitution with 16 mL high purity water)
solubility
H2O: soluble (1 vial plus 16 mL)
SMILES string
NC(N)=O
InChI
1S/CH4N2O/c2-1(3)4/h(H4,2,3,4)
InChI key
XSQUKJJJFZCRTK-UHFFFAOYSA-N
General description
Application
Urea has been used for protein sample preparation for reverse-phase nanospray liquid chromatography-tandem mass spectrometry.
1 of 1
This Item | |||
|---|---|---|---|
| description 8 M (after reconstitution with 16 mL high purity water) | description Pharmaceutical Secondary Standard; Certified Reference Material | description free-flowing, Redi-Dri™, Bioreagent, ≥98% | description NIST® SRM® 2152, combustion calorimetric standard |
| Quality Level 100 | Quality Level 300 | Quality Level 100 | Quality Level - |
| solubility H2O: soluble (1 vial plus 16 mL) | solubility - | solubility - | solubility - |
| form powder | form - | form - | form solid |
| concentration 8 M (after reconstitution with 16 mL high purity water) | concentration - | concentration - | concentration - |
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Storage Class
11 - Combustible Solids
WGK
WGK 1
Flash Point (°F)
Not applicable
Flash Point (°C)
Not applicable
PPE (personal protective equipment)
Eyeshields, Gloves, type N95 (US)
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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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