Urea

Raw Chemicals-19

Urea

Urea

Key details

Standard packing 50.00 Kg Granules
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Application

<ul>
<li>
More than 90% of world industrial production of urea is destined for use as a nitrogen-release fertilizer. Urea has the highest nitrogen content of all solid nitrogenous fertilizers in common use. Therefore, it has the lowest transportation costs per unit of nitrogen nutrient.</li>
<li>
Urea is a raw material for the manufacture of two main classes of materials: urea-formaldehyde resins and urea-melamine-formaldehyde used in marine plywood.</li>
<li>
Urea is used in SNCR and SCR reactions to reduce the NOx pollutants in exhaust gases from combustion from Diesel, dual fuel, and lean-burn natural gas engines. The BlueTec system, for example, injects a water-based urea solution into the exhaust system.</li>
<li>
Urea in concentrations up to 10 M is a powerful protein denaturant as it disrupts the noncovalent bonds in the proteins. This property can be exploited to increase the solubility of some proteins. A mixture of urea and choline chloride is used as a deep eutectic solvent (DES), a substance similar to ionic liquid. When used in a deep eutectic solvent, urea does not denature the proteins that are solubilized.</li>
<li>
Urea-containing creams are used as topical dermatological products to promote rehydration of the skin. Urea 40% is indicated for psoriasis, xerosis, onychomycosis, ichthyosis, eczema, keratosis, keratoderma, corns, and calluses.</li>
<li>
An ingredient in diesel exhaust fluid (DEF), which is 32.5% urea and 67.5% de-ionized water. DEF is sprayed into the exhaust stream of diesel vehicles to break down dangerous NOx emissions into harmless nitrogen and water.</li>
<li>
A component of animal feed, providing a relatively cheap source of nitrogen to promote growth</li>
<li>
A non-corroding alternative to rock salt for road de-icing. It is often the main ingredient of pet friendly salt substitutes although it is less effective than traditional rock salt or calcium chloride.</li>
<li>
A main ingredient in hair removers such as Nair and Veet</li>
<li>
A browning agent in factory-produced pretzels</li>
<li>
An ingredient in some skin cream, moisturizers, hair conditioners, and shampoos</li>
<li>
A cloud seeding agent, along with other salts.</li>
<li>
A flame-proofing agent, commonly used in dry chemical fire extinguisher charges such as the urea-potassium bicarbonate mixture</li>
<li>
An ingredient in many tooth whitening products.</li>
<li>
An ingredient in dish soap</li>
<li>
Along with diammonium phosphate, as a yeast nutrient, for fermentation of sugars into ethanol</li>
<li>
A nutrient used by plankton in ocean nourishment experiments for geoengineering purposes</li>
<li>
As an additive to extend the working temperature and open time of hide glue</li>
<li>
As a solubility-enhancing and moisture-retaining additive to dye baths for textile dyeing or printing</li>
<li>
As an optical parametric oscillator in nonlinear optics</li>
</ul>

Technical Specifications

<table class="infobox bordered" style="border-style: solid; border-color: rgb(162, 169, 177); font-size: 12.32px; border-spacing: 3px; background-color: rgb(248, 249, 250); color: black; margin: 0.5em 0px 0.5em 1em; padding: 0.2em; clear: right; line-height: 1.5em; border-collapse: collapse; font-family: sans-serif; width: 22em;">
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<div style="padding: 0.1em 0px; line-height: 1.2em;">
<a href="https://en.wikipedia.org/wiki/Chemical_formula&quot; style="text-decoration-line: none; color: rgb(11, 0, 128); background: none;" title="Chemical formula">Chemical formula</a></div>
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<span title="Carbon">C</span><span title="Hydrogen">H</span><sub style="line-height: 1; font-size: 9.856px;">4</sub><span title="Nitrogen">N</span><sub style="line-height: 1; font-size: 9.856px;">2</sub><span title="Oxygen">O</span></td>
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<td style="border-style: solid; border-color: rgb(162, 169, 177); vertical-align: top;">
<a href="https://en.wikipedia.org/wiki/Molar_mass&quot; style="text-decoration-line: none; color: rgb(11, 0, 128); background: none;" title="Molar mass">Molar mass</a></td>
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<span class="nowrap" style="white-space: nowrap;">60.056</span> g·mol<sup style="line-height: 1; font-size: 9.856px;">−1</sup></td>
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Appearance</td>
<td style="border-style: solid; border-color: rgb(162, 169, 177); vertical-align: top;">
White solid</td>
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<td style="border-style: solid; border-color: rgb(162, 169, 177); vertical-align: top;">
<a href="https://en.wikipedia.org/wiki/Density&quot; style="text-decoration-line: none; color: rgb(11, 0, 128); background: none;" title="Density">Density</a></td>
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1.32 g/cm<sup style="line-height: 1; font-size: 9.856px;">3</sup></td>
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<a href="https://en.wikipedia.org/wiki/Melting_point&quot; style="text-decoration-line: none; color: rgb(11, 0, 128); background: none;" title="Melting point">Melting point</a></td>
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133 to 135 °C (271 to 275 °F; 406 to 408 K)</td>
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<a href="https://en.wikipedia.org/wiki/Aqueous_solution&quot; style="text-decoration-line: none; color: rgb(11, 0, 128); background: none;" title="Aqueous solution">Solubility in water</a></div>
</td>
<td style="border-style: solid; border-color: rgb(162, 169, 177); vertical-align: top;">
1079 g/L (20 °C)<br />
1670 g/L (40 °C)<br />
2510 g/L (60 °C)<br />
4000 g/L (80 °C)</td>
</tr>
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<td style="border-style: solid; border-color: rgb(162, 169, 177); vertical-align: top;">
<a href="https://en.wikipedia.org/wiki/Solubility&quot; style="text-decoration-line: none; color: rgb(11, 0, 128); background: none;" title="Solubility">Solubility</a></td>
<td style="border-style: solid; border-color: rgb(162, 169, 177); vertical-align: top;">
500 g/L glycerol
<p style="margin: 0.5em 0px;">
50g/L ethanol<br />
~4 g/L <a href="https://en.wikipedia.org/wiki/Acetonitrile&quot; style="text-decoration-line: none; color: rgb(11, 0, 128); background: none;" title="Acetonitrile">acetonitrile</a></p>
</td>
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<td style="border-style: solid; border-color: rgb(162, 169, 177); vertical-align: top;">
<a href="https://en.wikipedia.org/wiki/Acid_dissociation_constant&quot; style="text-decoration-line: none; color: rgb(11, 0, 128); background: none;" title="Acid dissociation constant">Basicity</a> (p<i>K</i><sub style="line-height: 1; font-size: 9.856px;">b</sub>)</td>
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13.9<sup class="reference" id="cite_ref-4" style="line-height: 1; unicode-bidi: isolate; white-space: nowrap; font-size: 9.856px;"><a href="https://en.wikipedia.org/wiki/Urea#cite_note-4&quot; style="text-decoration-line: none; color: rgb(11, 0, 128); background: none;">[4]</a></sup></td>
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<div style="padding: 0.1em 0px; line-height: 1.2em;">
<a href="https://en.wikipedia.org/wiki/Magnetic_susceptibility&quot; style="text-decoration-line: none; color: rgb(11, 0, 128); background: none;" title="Magnetic susceptibility">Magnetic susceptibility</a> (χ)</div>
</td>
<td style="border-style: solid; border-color: rgb(162, 169, 177); vertical-align: top;">
-33.4·10<sup style="line-height: 1; font-size: 9.856px;">−6</sup> cm<sup style="line-height: 1; font-size: 9.856px;">3</sup>/mol</td>
</tr>
</tbody>
</table>

Note

<p>
<span style="color: rgb(32, 33, 34); font-family: sans-serif; font-size: 14px;">Urea can be irritating to skin, eyes, and the respiratory tract. Repeated or prolonged contact with urea in fertilizer form on the skin may cause </span><a href="https://en.wikipedia.org/wiki/Dermatitis&quot; style="background-image: none; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; text-decoration-line: none; color: rgb(11, 0, 128); font-family: sans-serif; font-size: 14px;" title="Dermatitis">dermatitis</a>.</p>

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