Urea 46
1.Nitrogen: 46.0% Min
2.Biuret: 1.0% Max
3.Moisture: 0.5% Max
4.Size:0.85-2.8mm(90%min)
5.Manufacturer,Factory ,
6.Certificate:BV,Intertek, ISO9001:2008
CAS:57-13-6
Molecular Formula:CH4N2Ol
Molecular Weight:60.06
Melting point:132-135C
Relative density:1.335g/ml at 25C(lit)
| Calcium chloride Chemical Properties | |
| mp | 772 °C(lit.) |
| bp | 1600 °C |
| density | 1.086 g/mL at 20 °C |
| vapor pressure | 0.01 mm Hg ( 20 °C) |
| refractive index | n20/D 1.358 |
| Fp | >1600°C |
| storage temp. | 2-8°C |
| solubility | H2O: soluble |
| form | powder |
| Water Solubility | 740 g/L (20 ºC) |
| Sensitive | Hygroscopic |
| Merck | 141659 |
| Stability: | Stable. Incompatible with zinc, water, strong acids, |
| methyl vinyl ether, bromine trifluoride, boron oxide, | |
| calcium oxide. Hygroscopic. | |
| CAS DataBase Reference | 10043-52-4(CAS DataBase Reference) |
| NIST Chemistry Reference | Calcium dichloride(10043-52-4) |
| EPA Substance Registry System | Calcium chloride (CaCl2)(10043-52-4) |
| Hazard Codes | Xi |
| Risk Statements | 36/37/38-36-36/38-41-22 |
| Safety Statements | 26-39-24-22-36 |
| WGK Ger | 1 |
| RTECS | EV981000 |
| HS Code | 2827200 |
| Hazardous Substances Data | 10043-52-4(Hazardous Substances Data) |
| Colour | White |
| Shape | white ball |
| Size | medium grain |
| Physical Properties | Physical properties Urea is easily soluble in water, 105 grams can be dissolved in 100 ml of water at 20 °C, and the aqueous solution is neutral.There are two types of urea products.Crystalline urea is in the form of white needle or prismatic crystal, and has strong hygroscopicity.[1] Granular urea is a translucent particle with a particle size of 1 to 2 mm, with a smooth appearance and significantly improved hygroscopicity.The critical moisture absorption point at 20°C is 80% relative humidity, but at 30°C, the critical moisture absorption point drops to 72.5%, so urea should be kept open in humid climates in midsummer.Adding hydrophobic substances such as paraffin in urea production greatly reduces its hygroscopicity. |
| Chemical Properties | Urea can react with acids to form salts.There is hydrolysis.The condensation reaction can be carried out at high temperature to generate biuret, triuret and cyanuric acid.Heated to 160 ° C to decompose, producing ammonia and turning into isocyanic acid.Because it is contained in human urine, it is named urea.Urea contains 46% nitrogen (N), which is the highest nitrogen content among solid nitrogen fertilizers. |
| Material | The raw materials for urea production are mainly liquid ammonia and carbon dioxide gas. Liquid ammonia is the main product of the synthetic ammonia plant, and carbon dioxide gas is the by-product of the purification of the synthetic ammonia feedstock gas.The liquid ammonia used for synthesizing urea requires a purity higher than 99.5%, oil content less than 10PPm, water and inert gas less than 0.5%, and no solid impurities such as catalyst powder and rust.The purity of carbon dioxide is required to be greater than 98.5%, and the sulfide content is less than 15mg/Nm³. |