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33247

Urea

Name: Urea
Brand: SIAL
Price: 1060 CZK

ACS reagent grade, ≥99%, solid, puriss. p.a., reag. Ph. Eur.

Synonyma:

Carbamide, Carbonyldiamide

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Vám/Skladová položka	Dostupnost	Cena
250 g	Obraťte se na zákaznický servis a vyžádejte si informaci o dostupnosti.	1 060,00 Kč
1 kg	Obraťte se na zákaznický servis a vyžádejte si informaci o dostupnosti.	2 860,00 Kč
2.5 kg	Obraťte se na zákaznický servis a vyžádejte si informaci o dostupnosti.	5 730,00 Kč 4 297,50 Kč
5 kg	Obraťte se na zákaznický servis a vyžádejte si informaci o dostupnosti.	6 580,00 Kč

O této položce

Lineární vzorec:

NH₂CONH₂

Číslo CAS:

57-13-6

Molekulová hmotnost:

60.06

NACRES:

NA.21

PubChem Substance ID:

57648752

UNSPSC Code:

12352100

EC Number:

200-315-5

MDL number:

MFCD00008022

Beilstein/REAXYS Number:

635724

Assay:

≥99%, 99-101% (calc. on dry substance)

Form:

solid

1 060,00 Kč

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Vlastnosti

Název produktu

Urea, puriss. p.a., ACS reagent, reag. Ph. Eur., ≥99%

Quality Segment

200

agency

reag. Ph. Eur.

grade

ACS reagent, puriss. p.a.

assay

≥99%, 99-101% (calc. on dry substance)

form

solid

impurities

alkalic reac. substances, complies, ≤0.0005% heavy metals (as Pb), ≤0.05% ammonium (NH₄), ≤0.1% biuret

ign. residue

≤0.01% (as SO₄)

loss

≤1.0% loss on drying, 105°C, 1 h

mp

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^-): ≤5 mg/kg, sulfate (SO₄^2-): ≤10 mg/kg

cation traces

Fe: ≤2 mg/kg

suitability

in accordance for appearance of solution, in accordance for identity

functional group

amine

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)

Popis

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.

Urea is the most commonly used slow release nitrogen fertilizer.

Application

Urea has been used in the following studies:

Synthesis of SnO₂ nanoparticles.
Synthesis of urethanes, ureides and semicarbazides.
Denaturation of protein isolated from Saccharomyces cerevisiae Y15696 strain.
Protein electrophoretic studies.

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.

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Tato položka	U5128	U1250	15604
Sigma-Aldrich 33247 Urea	Sigma-Aldrich U5128 Urea	Sigma-Aldrich U1250 Urea	Sigma-Aldrich 15604 Urea
description puriss. p.a., ACS reagent, reag. Ph. Eur., ≥99%	description ACS reagent, 99.0-100.5%	description ReagentPlus^®, ≥99.5%, pellets	description puriss., meets analytical specification of Ph. Eur., BP, USP, 99.0-100.5%, 99.0-101.0% (calc. on dry substance)
assay 99-101% (calc. on dry substance), ≥99%	assay 99.0-100.5%, ≤0.001% (Heavy Metals by ICP-OES, metals basis)	assay ≥99.5%	assay 99.0-101.0% (calc. on dry substance), 99.0-100.5%
Quality Level 200	Quality Level 200	Quality Level 300	Quality Level 200
solubility H₂O: soluble 480 g/L at 20 °C	solubility H₂O: soluble 480 g/L at 20 °C	solubility H₂O: 8 M	solubility H₂O: soluble 480 g/L at 20 °C
density 1.335 g/mL at 25 °C (lit.)	density 1.335 g/mL at 25 °C (lit.)	density 1.335 g/mL at 25 °C (lit.)	density 1.335 g/mL at 25 °C (lit.)
form solid	form solid	form pellets	form solid
mp 132-135 °C	mp 132-135 °C (lit.)	mp 132-135 °C (lit.)	mp 132-135 °C

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Skladovací třída

11 - Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c