|
ame |
Urea |
|
CAS NO. |
57-13-6 |
|
Chemical formula |
CO (NH2)2 |
|
Appearance |
White prilled crystal |
|
Molecular weight |
60.055 |
|
Density |
1.32 g/m3 |
|
Property |
It is soluble in water and alcohol. Its water solubility is faintly alkaline. It decomposes when heated over fusing point. Under high temperature, it can undergo a condensation reaction and form biuret, triuret and polyhydrocyanic acid. |
2.Specification
|
ITEM |
Min/Max Values |
|
Result |
|
Urea Assay (wt %) |
99.0 min |
|
99.1 |
|
Granulate size(0.85-2.8mm)% |
90min |
|
97.7 |
|
Moisture (wt %) |
0.5max |
|
0.34 |
|
Nitrogen(wt %) |
46min |
|
46.4 |
|
Alkalinity as NH3(wt %) |
0.2max |
|
0.01 |
|
Biuret (wt %) |
0.9max |
|
0.72 |
|
Aldehydes (ppm) |
15max |
|
0.9 |
|
Free Ammonium(wt %) |
0.6max |
|
0.01 |
|
Insolubles (ppm) |
15max |
|
3.1 |
|
Ca(mg/kg) |
0.5max |
|
0.32 |
|
Fe (mg/kg) |
0.5 max |
|
0.18 |
|
Al (mg/kg) |
0.5max |
|
0.16 |
|
Cu (mg/kg) |
0.2 max |
|
0.05 |
|
Zn (mg/kg) |
0.2 max |
|
0.01 |
|
Cr (mg/kg) |
0.4 max |
|
0.22 |
|
Ni (mg/kg) |
0.5 max |
|
0.05 |
|
Mg (mg/kg) |
0.5 max |
|
0.01 |
|
Na (mg/kg) |
0.5max |
|
0.15 |
|
K (mg/kg) |
0.5 max |
|
0.06 |
|
Ash (ppm) |
100 max. |
|
Less than 10 |
|
Phosphate(mg/kg) |
0.5 max |
|
0.2 |
|
Heavy Metal( ppm) |
0.5 |
|
0.4 |
|
Additive |
NONE |
|
NONE |
|
PH (10 wt% solution) |
9.0 ~ 10.0 |
|
9.7 |
3.Uses
SCR Urea/DEF urea,also called as automotive urea or ARLA 32 urea,is the solid prilled urea with high purity,this kind of urea requires less biuret and heavy metal contents compared with the agricultural urea,our pure DEF grade urea is blended into aqueous urea solution by mixing 32.5% urea and 67.5% deionized water,with the widespread use of SCR technology,the demand for SCR Urea/DEF urea has been increasing year by year.
4.Packing and Transport
50kg ,500kg,1000kg PP bag or pallet available ,Stored in cool, dry and draughty storehouse. Kept away form fire, heat source, moisture. Avoid packing damage. when necessary should be placing the waterproof canvas.
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