Urea CAS 57-13-6, Urea, CAS 57-13-6
Structure: Urea CAS 57-13-6 contains a carbonyl group (C=O) and two amino groups (-NH ₂), and is one of the simplest organic compounds.
57-13-6
CH4N2O
60.06
200-315-5
| CAS | 57-13-6 |
| Molecular formula | CH4N2O |
| Molecular weight | 60.06 |
| EIENCS | 200-315-5 |
| Form | powder |
| Melting point | 132-135°C |
| boling point | 332.48°C |
| Density | 1.335 g/mL at 25 °C |
| Solubility | H2O: 8 M at 20 °C |
| PKA | 0.10(at 25℃) |
| Color | white |
| Storage temp | 2-8°C |
Molecular formula and structure
Molecular formula: CH₄N₂O (or CO(NH₂)₂)
Molecular weight: 60.06 g/mol
Structure: It contains a carbonyl group (C=O) and two amino groups (-NH ₂), and is one of the simplest organic compounds.
Appearance: White crystals or granules, odorless, salty and cool in taste, with a slight ammonia smell after long-term storage.
Urea (CAS 57-13-6) as a cross-disciplinary basic chemical, its core value lies in:
Agricultural foundation: 60% of global production supports food security, and technological upgrades promote the popularization of slow-release/nano urea.
Industrial all-rounder: From automotive denitrification to electronic cleaning, green processes reshape production capacity structure;
Life science carriers: Pharmaceutical moisturizing and diagnostic, feed protein substitution, highlighting the advantage of biocompatibility.
1. Agricultural sector (accounting for over 60%
● High-efficiency nitrogen fertilizer: With a nitrogen content of 46%, it is the highest among solid nitrogen fertilizers and is suitable for all types of soil and crops (such as corn and rice), increasing yields by 20% to 30%.
● Technology upgrade
○ Slow-release urea: Reduces nitrogen loss, with its utilization rate increasing from 35% to 58%, and its market share is expected to reach 40% by 2030.
○ Polyglutamic acid urea: By adding polyglutamic acid polymer, it can resist drought and retain water, increasing production by 7% to 30%.
2. Industry and Chemical Engineering
● Vehicle urea (SCR technology for diesel vehicles) :
○ 31.8% to 33.3% water solution, used for exhaust gas denitrification (NOx conversion rate >75%), the demand is expected to exceed 2.8 million tons by 2025.
● Chemical raw materials
○ Synthetic melamine, urea-formaldehyde resin (wood adhesive), barbiturate (drug intermediate).
● Electronic industry
○ High-purity urea is used as a semiconductor cleaning agent, and the demand is expected to reach 50,000 tons by 2027.
3. Pharmaceuticals and Cosmetics
● Skin treatment
○ 10% to 40% cream: Dissolves keratin protein, treats ichthyosis and chapped hands and feet (high concentration has antibacterial properties).
● Moisturizer
○ As a natural moisturizing factor (NMF), it is added to hand creams and face creams (such as Vaseline repair cream).
● Diagnostic reagents
○ Helicobacter pylori detection (urease decomposition labeled urea releases CO₂).
4. Animal Husbandry and Environmental Protection
● Ruminant feed
○ Replace 20% to 30% of soybean meal protein and reduce feed costs by 30%, but prevent ammonia poisoning (LD₅₀ : 0.45g/kg for cattle).
● Denitration reducing agent
○ Flue gas treatment in power plants is safer than liquid ammonia. By 2025, the demand for industrial denitrification will account for 25%.
| Parameter | Numerical value/Description |
|---|---|
| Acute toxicity | Oral administration of LD₅₀ in rats: 5000 mg/kg (low toxicity); Skin contact may cause a brief pricking sensation |
| Environmental risk | Excessive fertilization leads to eutrophication of water bodies. Industrial emissions need to be controlled for biuret (in fertilizers) 0.5% |
| Protective measures | Avoid contact with eyes/broken skin; Wear gloves when operating and store in a cool and dry place. "30℃ |
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