Urea
The world's leading solid nitrogen fertilizer — and a core raw material for UF resins, animal feed, melamine and diesel exhaust fluid worldwide.
Chelora Chemicals supplies urea to fertilizer distributors, resin manufacturers and DEF blenders worldwide, with full documentation and consistent nitrogen content on every consignment.
Product identity
- CAS Number
- 57-13-6
- IUPAC name
- Carbonyl diamide
- Molecular formula
- CH₄N₂O
- Molecular weight
- 60.06 g/mol
- Melting point
- 133 °C
- Nitrogen content
- 46% (fertilizer grade)
- UN Number
- Not regulated*
- HS Code
- 3102 10
* Solid urea is not classified as dangerous goods under standard conditions; urea-ammonium nitrate (UAN) liquid blends carry separate classification which we confirm on request.
What Urea is used for
Urea (carbamide) is a white, odourless, crystalline solid typically supplied as prills or granules, highly soluble in water. It is produced industrially by reacting ammonia with carbon dioxide under heat and pressure, making it the natural downstream product of ammonia synthesis.
Urea's single largest use is as the world's leading solid nitrogen fertilizer, supplying 46% nitrogen by weight — the highest of any common solid fertilizer. It is also a key raw material for urea-formaldehyde (UF) resins used in wood panels, and is widely used as an animal feed nitrogen supplement, a feedstock for melamine production, and as the active urea component in diesel exhaust fluid (DEF/AdBlue), which reduces NOx emissions in SCR-equipped diesel engines.
Where it sits in the nitrogen value chain
- Ammonia the nitrogen feedstock urea is synthesised from. See that page.
- Urea (this product) the solid nitrogen fertilizer and chemical intermediate.
- UF Resins, Melamine, DEF major derivatives produced from urea. See the Formaldehyde page.
Handling character
Urea is a low-hazard, non-flammable solid under normal storage and handling. Full hazard detail is in the Safety section below.
| Parameter | Typical value |
|---|---|
| Appearance | White prills or granules |
| Nitrogen content | 46.0% min |
| Biuret content | < 1.0% (fertilizer grade) |
| Moisture content | < 0.5% |
Important: the figures above are indicative of commercial material and are offered for planning only. The batch certificate of analysis is the governing document.
| Property | Value |
|---|---|
| Physical state | White crystalline solid (prills/granules) |
| Melting point | 133 °C |
| Nitrogen content | 46% by weight |
| Water solubility | Highly soluble (~1,080 g/L at 20 °C) |
| Bulk density (prills) | ~0.74 kg/L |
| Flammability | Non-flammable solid |
Physical constants compiled from public reference data for CAS 57-13-6 and rounded for readability. Treat them as orientation, not as a specification.
Where our customers put this nitrogen to work
The fertilizer the world's food production depends on.
Nitrogen fertilizer (46-0-0)
The world's leading solid nitrogen fertilizer by volume, applied directly or blended into compound fertilizers.
- Fertilizer-grade specification
- Bulk & bag supply
- Technical desk review on request
Urea-formaldehyde (UF) resins
Reacted with formaldehyde to produce the resin that binds particleboard, MDF and interior plywood.
- Technical-grade specification
- Documented batch traceability
- Contract & spot supply
Diesel exhaust fluid (DEF/AdBlue)
High-purity urea dissolved to 32.5% forms DEF, reducing NOx emissions in SCR-equipped diesel engines.
- Packs sized to customer volumes
- Full analytical documentation available
- Retained sample held against the lot
Animal feed supplement
Used as a non-protein nitrogen source in ruminant feed formulations.
- Documented batch traceability
- Technical desk review on request
Melamine & chemical feedstock
Used as the feedstock for melamine production and various nitrogen-chemical derivatives.
- Research & process-scale quantities
- Full documentation supplied
Contract & scheduled supply
Fertilizer distributors and resin plants running continuous consumption are supported with scheduled bulk delivery.
- Annual contracts with scheduled call-off
- Price held across the contract period
- Second source held in reserve
How we supply Urea
Chelora Chemicals is a supplier and sourcing partner, not a manufacturer. Nitrogen content, biuret level and moisture are critical to fertilizer and DEF quality — that shapes how we manage this line.
We place your order with whichever qualified producer best matches your required grade, your price point and your delivery window, and confirm your jurisdiction's import requirements before booking.
We keep a second qualified source on this line, so a single-plant disruption never becomes your production problem.
- Nitrogen content and biuret level confirmed before we quote. Consistency matters to downstream fertilizer and DEF quality.
- Transport documentation managed end to end. Classification, labelling and carrier compliance confirmed before booking.
- Scheduled call-off scheduling. We hold contracted tonnage and release it against your consumption calendar.
- Batch traceability to the producing plant. Full chain of custody documentation on request.
- Export machinery handled in-house. Classification, approved packing, labelling, freight booking and customs paperwork are ours to manage.
- Fertilizer-grade and technical/feed grade both sourced. Matched precisely to your application.
Packed the way your plant receives it
Bag, bulk bag or bulk vessel — tell us your preferred format and we will quote and classify to it.
50 kg poly-lined bags
Moisture-barrier poly bags on pallets for smaller-volume orders and trial quantities.
~1,000 kg FIBC/jumbo bags
Moisture-protected bulk bags sized for mid-volume distributor orders.
Large-volume bulk shipment
Bulk vessel or rail shipment for continuous-consumption fertilizer-distribution and DEF-blending plants.
Incoterms to suit you
Quoted on the Incoterm your purchasing team works to, with documentation filed before booking.
Trial / sample quantities
Small packs dispatched for process trials before a commercial order is placed.
Contracted call-off supply
We hold contracted tonnage and release it against your consumption calendar.
A low-hazard solid — handled with standard care
Solid urea is a low-toxicity, non-flammable material under normal conditions, and is not classified as hazardous for transport. The summary below is orientation only — the safety data sheet supplied with your specific batch is the authoritative document.
Handling points to note
DustNuisance dust from prill/granule handling; use standard dust controls.HygroscopicAbsorbs moisture; cakes if exposed to humid air.
Low intrinsic hazard, standard industrial hygiene applies. Always read the SDS issued with your specific batch for complete handling guidance.
Storage
Store in a cool, dry, well-ventilated area, off the ground and away from moisture, to prevent caking and maintain free-flowing prills or granules.
Handling
Use standard PPE (gloves, dust protection) for bag and bulk handling. Provide dust controls at transfer and blending points; avoid prolonged inhalation of dust.
Transport
Solid urea is generally not regulated as dangerous goods. We confirm and document classification for liquid urea-ammonium nitrate (UAN) blends, which carry separate requirements.
Every batch, documented
We verify documentation before dispatch so there are no surprises at your incoming-goods bench.
Specification agreed
Nitrogen content, biuret level and moisture confirmed against your application before order placement.
Producer batch testing
The producing plant tests each batch against the agreed specification before release.
Documentation review
COA, SDS and transport paperwork checked by our desk before the shipment is booked.
Traceable dispatch
Each shipment is traceable to its producing batch, with full chain-of-custody records on request.
How urea is made
Urea is produced industrially by the reaction of ammonia with carbon dioxide under heat and pressure to form ammonium carbamate, which is then dehydrated to urea, a long-established route in nitrogen chemistry. The molten product is typically prilled or granulated for fertilizer and industrial use.
We do not publish operating process parameters here; this is background only. Full technical documentation accompanies every shipment, and any process-specific detail you need is best confirmed directly with our technical desk.
| Chemical family | Amide (carbamide) |
|---|---|
| Functional groups | Two amide (-NH2) groups on a carbonyl |
| Reactivity | Condenses with formaldehyde to form UF resins; hydrolyses to ammonia and CO2 |
| Related compounds | Ammonia (feedstock); UF Resins, Melamine, DEF (derivatives) |
Explore the wider fertilizer & inorganic range
Urea, answered
What is Urea used for?
How is urea related to ammonia?
Is Urea hazardous?
What grade do you supply?
What packing do you offer?
Do you manufacture this yourself?
- Need a related intermediate? See our Ammonia and Nitric Acid pages.
Get a quote on Urea today
Send us your required grade, pack size and delivery window. We will come back with a firm quote, lead time and full documentation.