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
U5378
Urea
powder, BioReagent, Molecular Biology, suitable for cell culture
Synonym(s):
Carbamide, Carbonyldiamide
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| Pack Size | SKU | Availability | Price |
|---|
About This Item
grade
Molecular Biology
Quality Level
product line
BioReagent
assay
≥98%
form
powder
technique(s)
cell culture | mammalian: suitable
mp
132-135 °C (lit.)
solubility
H2O: soluble 480 mg/mL, clear, colorless (8M)
density
1.335 g/mL at 25 °C (lit.)
anion traces
chloride (Cl-): ≤5 ppm
cation traces
Cu: ≤1 ppm, Fe: ≤5 ppm, Pb: ≤2 ppm
absorption
≤0.06 at 260 at 6 M, ≤0.06 at 280 at 6 M
foreign activity
DNase, NICKase, RNase and protease, none detected
SMILES string
NC(N)=O
InChI
1S/CH4N2O/c2-1(3)4/h(H4,2,3,4)
InChI key
XSQUKJJJFZCRTK-UHFFFAOYSA-N
Gene Information
human ... CA1(759), CA2(760)
rat ... Ppm1a(24666)
Application
- Urea has been used in protein resuspension buffer and to denature proteins.
- It has been used for the isolation of proteins via urea-containing polyacrylamide gels.
- It has been used to study the conformation of unfolded proteins under different concentrations of urea and different pH.
1 of 1
This Item | |||
|---|---|---|---|
| assay ≥98% | assay 98.5-101.5% | assay ≥99.5% | assay 99.0-100.5%, 99.0-101.0% (calc. on dry substance) |
| Quality Level 200 | Quality Level 200 | Quality Level 300 | Quality Level 200 |
| technique(s) cell culture | mammalian: suitable | technique(s) - | technique(s) - | technique(s) - |
| grade Molecular Biology | grade - | grade - | grade - |
| solubility H2O: soluble 480 mg/mL, clear, colorless (8M) | solubility H2O: 5 M at 20 °C, clear, colorless | solubility H2O: 8 M | solubility H2O: soluble 480 g/L at 20 °C |
| form powder | form powder, crystals or pellets | form pellets | form solid |
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Storage Class
11 - Combustible Solids
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
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Related Content
Product Information Sheet
Global Trade Item Number
| SKU | GTIN |
|---|---|
| U5378-500G | 04061835550449 |
| U5378-5KG | 04061835550456 |
| U5378-1KG | 04061835550432 |
| U5378-100G | 04061835522675 |
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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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what is storage temperature for U5378?
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This product may be stored at room temperature. For products with no specified storage temperature given on the label or product page, ambient storage may be assumed.
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