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Urea, 250G

SKU:
15604-250G
  • $40.80

    • Description

    Urea

    puriss., meets analytical specification of Ph. Eur., BP, USP, 99.0-100.5%, 99.0-101.0% (calc. on dry substance)

    Synonym(s):
    Carbamide, Carbonyldiamide
    Linear Formula:
    NH2CONH2
    CAS Number:
    57-13-6
    Molecular Weight:
    60.06
    Beilstein:
    635724
    EC Number:
    200-315-5
    MDL number:
    MFCD00008022
    PubChem Substance ID:
    329750941
    NACRES:
    NA.21

    PROPERTIES

    grade

    puriss.

    Quality Level

    200

    Assay

    99.0-100.5%
    99.0-101.0% (calc. on dry substance)

    form

    solid

    quality

    meets analytical specification of Ph. Eur., BP, USP

    impurities

    alkalic reac. substances, complies
    ≤0.001% heavy metals (as Pb)
    ≤0.04% insoluble in ethanol
    ≤0.05% ammonium (NH4)
    ≤0.1% biuret(carbamylurea)

    ign. residue

    ≤0.1% (as SO4)

    loss

    ≤1.0% loss on drying, 105 °C, 1 h

    mp

    132-135 °C (lit.)
    132-135 °C

    solubility

    H2O: soluble 480 g/L at 20 °C

    density

    1.335 g/mL at 25 °C (lit.)

    anion traces

    chloride (Cl-): ≤10 mg/kg
    sulfate (SO42-): ≤50 mg/kg

    cation traces

    Fe: ≤0.5 mg/kg

    suitability

    in accordance for appearance of solution
    in accordance for identity

    SMILES string

    NC(N)=O

    InChI

    1S/CH4N2O/c2-1(3)4/h(H4,2,3,4)

    InChI key

    XSQUKJJJFZCRTK-UHFFFAOYSA-N

    General description

    Urea is a colorless, odorless solid. It has prism-like crystals. It forms insoluble nitrate salts with nitric acid and oxalate salts with oxalic acid. On reaction with alkanes or substituted alkanes, it affords crystal-lattice inclusion compounds.[1]
    Urea can be prepared from ammonia and carbon-dioxide, via Haber-Bosch process.[2] It can also be used to prepare urea-formaldehyde resins, via condensation reaction.[3]

    Application

    Urea has been used in the following studies:
    • Synthesis of SnO2 nanoparticles.[4]
    • Synthesis of urethanes, ureides and semicarbazides.[1]
    • Denaturation of protein isolated from Saccharomyces cerevisiae Y15696 strain[5]
    • Protein electrophoretic studies.[6]
    Used for the denaturation of proteins and as a mild solubilization agent for insoluble or denatured proteins. Useful for renaturing proteins from samples already denatured with 6 M guanidine chloride such as inclusion bodies. May be used with guanidine hydrochloride and dithiothreitrol (DTT) in the refolding of denatured proteins into their native or active form.

    SAFETY INFORMATION

    Storage Class Code

    11 - Combustible Solids

    WGK

    WGK 1

    Flash Point(F)

    Not applicable

    Flash Point(C)

    Not applicable

    Personal Protective Equipment

    dust mask type N95 (US), Eyeshields, Gloves