- Chemical Name
- Aqueous urea solution 32.5%
- Physical Form
- Clear, colourless liquid
- HSN Code
- 31021000
- Packaging
- 25 kg packs; bulk on request
COROBLUE is a Diesel Exhaust Fluid (DEF) for diesel engines fitted with Selective Catalytic Reduction (SCR). It is injected into the exhaust, where it helps cut nitrogen oxide (NOx) emissions. As a diesel exhaust fluid supplier in the UAE, Corofy delivers consistent quality and availability to fleets, contractors and industrial operators in Dubai and across the region.
Whether you run trucks, buses, generators, construction equipment or industrial machinery, COROBLUE helps SCR diesel engines meet emission requirements while keeping performance reliable. It is part of our lubricant and automobile chemicals range.
What is COROBLUE?
COROBLUE is a solution of high-purity urea in deionised water, made to the ISO 22241 standard. Fluid of this kind is also known as AUS 32 (aqueous urea solution, 32.5%), and Corofy supplies it as an AUS 32 supplier in the UAE. It contains:
- 32.5% high-purity urea
- 67.5% deionised water
COROBLUE is clear, colourless and non-flammable, and it is easy to handle when stored and used as recommended.
How Does Diesel Exhaust Fluid Work?
Diesel engines produce nitrogen oxides as they run. COROBLUE is dosed into the hot exhaust ahead of the SCR catalyst, where the urea breaks down into ammonia. In the catalyst, the ammonia reacts with the nitrogen oxides and turns them into harmless nitrogen and water vapour.
COROBLUE Specifications
Product Identification
- Product Name: COROBLUE (DEF / AUS 32)
Packaging & Documentation
- Documentation: COA, SDS / MSDS available
Key ISO 22241 Quality Limits
ISO 22241-1 sets the quality limits that protect the SCR catalyst and dosing system. The main ones are:
| Parameter | ISO 22241-1 limit |
|---|---|
| Urea content | 31.8 – 33.2% by mass |
| Density at 20 °C | 1,087 – 1,093 kg/m³ |
| Refractive index at 20 °C | 1.3814 – 1.3843 |
| Alkalinity as NH3 | max. 0.2% |
| Biuret | max. 0.3% |
| Aldehydes | max. 5 mg/kg |
| Insoluble matter | max. 20 mg/kg |
| Phosphate (PO4) | max. 0.5 mg/kg |
| Calcium, iron, magnesium, sodium, potassium, aluminium | max. 0.5 mg/kg each |
| Copper, zinc, chromium, nickel | max. 0.2 mg/kg each |
Applications of COROBLUE
COROBLUE can be used in a wide range of SCR-equipped diesel vehicles and equipment.
Transport Fleets
- Heavy-duty trucks
- Delivery vehicles
- Commercial buses
Industrial Equipment
- Diesel generators
- Construction machinery
- Industrial engines
- Mining equipment
Agricultural Machinery
- Tractors
- Harvesters
- Agricultural diesel equipment
Why Choose COROBLUE?
Businesses looking for a reliable diesel exhaust fluid supplier need a product that delivers consistent quality and performance.
- Made to ISO 22241 for SCR diesel engines
- Helps reduce NOx emissions and meet emission regulations
- Suitable for heavy-duty, commercial and industrial use
- Reliable supply for fleets and industrial buyers in the UAE
- Available in packs and in bulk
As emission standards tighten, diesel vehicles and equipment need a dependable DEF supply. Fleet operators can read our bulk diesel exhaust fluid buyer's guide for advice on sourcing DEF in bulk.
Handling, Storage & Safety
Store COROBLUE in clean, closed containers out of direct sunlight. DEF freezes at about -11 °C and slowly breaks down when kept hot for long periods, so shaded storage matters in the UAE climate. Use dedicated, clean equipment for transfer: contamination with fuel, oil, dust or tap water can damage the SCR system. DEF is not classified as hazardous, but follow the SDS.
Request a quote for COROBLUE in packs or bulk.