AirNox Specifications as per ISO 22241

Product Properties for AdBlue® as per the revised ISO22241 standard. All copies of the standards are available to purchase from ISO.org. Urea 32,5 % (approximate) solution dissolved within deionised water. As required by SCR equipped vehicles under the provisions of Emissions standards Euro IV (Euro4), Euro V (Euro5) & Euro VI (Euro6).
MinMax
Urea Content31.833.2% by weight
Density at 20°C1.08701.0930g/cm³
Refracting Index at 20°C1.38141.3843
Alkalinity as NH30.2%
Biuret0.3%
Aldehyde5mg/kg
Insolubles20mg/kg
Phosphate (PO4)0.5mg/kg
Calcium0.5mg/kg
Iron0.5mg/kg
Copper0.2mg/kg
Zinc0.2mg/kg
Chromium0.2mg/kg
Nickel0.2mg/kg
Aluminium0.5mg/kg
Magnesium0.5mg/kg
Sodium0.5mg/kg
Potassium0.5mg/kg

Sections
ISO22241-1 : 2006 (quality standard)
Diesel engines — NOx reduction agent AUS 32 — Part 1: Quality requirements

ISO22241-2 : 2006/8 (quality standard)
Diesel engines — NOx reduction agent AUS 32 — Part 2: Test methods

ISO22241-3 : 2008 (quality standard)
Diesel engines — NOx reduction agent AUS 32 — Part 3: Handling, Transportation & Storage

ISO22241-4 : 2009 (quality standard)
Diesel engines — NOx reduction agent AUS 32 — Part 4: Refilling Interface

Revised
ISO22241-2 revised 2008