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    About 28,300 results (0.25s) 
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    An AI Overview is not available for this searchCan't generate an AI overview right now. Try again later.
    AI Overview
    Technical Grade Urea (specifically automotive-grade or AUS32-grade) is the high-purity, formaldehyde-free raw material required to produce AdBlue (AUS32). It is not interchangeable with standard agricultural fertilizer, as it must be free from biuret, aldehydes, and heavy metals to prevent irreversible damage to Selective Catalytic Reduction (SCR) systems in diesel engines. 
    Key Specifications for AdBlue Production 
    • Grade Type: Technical Grade / Automotive Grade Urea (uncoated).
    • Purity: >99.5%.
    • Urea Concentration: 32.5% in deionized water (final solution).
    • Standard: Must comply with ISO 22241 or DIN 70070.
    • Biuret Content: ≤ 0.3%.
    • Aldehyde Content: Free. 
    Difference from Other Urea Grades 
    • Automotive Grade Urea: Highly purified, free from contaminants, designed specifically for SCR systems.
    • Fertilizer Grade Urea: Lower purity (95-98%), contains higher biuret (>1%), and has harmful contaminants not suitable for vehicles.
    • Technical/Industrial Grade Urea: Used for resins and adhesives, can only be used for AdBlue if it meets strict ISO 22241 standards. 
    Production Requirements 
    • Mixing Ratio: 32.5 kg of urea with 67.5 kg of demineralized water.
    • Water Quality: Requires deionized/demineralized water, not tap water, to avoid contaminants.
    • Temperature: Process occurs at 25-50°C (77-122°F), with cooling afterward. 
    Using low-quality urea can cause clogging of the SCR system, increased exhaust emissions, and engine failure. 
    For large-scale, high-quality production of AdBlue, I can provide more details about the technical aspects of the production process. 
    • ADBLUE (AUS32) UREA SOLUTION, DIESEL EXHAUST ...
      * CHEMICALS AND ALLIED. APPLICATION NOTE. 4.06.02. AUTOMOTIVE GRADE UREA SOLUTION. PROCESS: ADBLUE AND DEF. * The automotive urea ...
      www.techmation.com
    • AUS32 Grade Urea for Reducing Nitrogen Oxide Emissions
      Automotive grade urea is the raw material to produce AdBlue (DEF / AUS 32), which is a kind of liquid for reducing nitrogen oxide ...
      www.qdstarco.com
    • Urea Adblue grade - atdmco.com
      Urea Grades. Urea is categorized into different grades based on purity and application: * AdBlue Grade (Automotive Urea): High-pur...
      atdmco.com
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    Web results

    6 things to know about AdBlue®, DEF, AUS32, ARLA32


    Palamatic Process
    https://www.palamaticprocess.com › en-us › blog › six-...
    Palamatic Process
    https://www.palamaticprocess.com › en-us › blog › six-...
    AUS32 is the generic term used for all urea solutions manufactured in accordance with ISO22241. All of these names relate to urea solutions that can be used in ...Read more
    Missing: technical ‎| Show results with: technical

    Wholesale Technical Grade Urea Aus32 For Adblue ...


    Guangzhou EverBlue Technology Co.,Ltd.
    https://www.everbluesolution.com › technical grade urea ...
    Guangzhou EverBlue Technology Co.,Ltd.
    https://www.everbluesolution.com › technical grade urea ...
    High quality technical grade urea 46% to maufacture AdBlue® / Diesel exhaust fluid / AUS 32 meet the ISO 22241 and DIN 70070 standard .Read more

    ADBLUE (AUS32) UREA SOLUTION, DIESEL EXHAUST ...


    techmation.com
    https://www.techmation.com › uploads › 2015/10
    techmation.com
    https://www.techmation.com › uploads › 2015/10
    PDF
    As the name AUS32 suggests, AdBlue is made by using urea mixed with demineralised water resulting in a 32.5 % aqueous urea solution. It is colorless, non-toxic ...Read more
    2 pages

    Automotive grade urea


    starco chem
    https://www.okstarco.com › product › product41
    starco chem
    https://www.okstarco.com › product › product41
    The DEF/adblue prills Urea(Automotive Grade Urea) from STARCOCHEM is the best choice for AdBlue/Diesel Exhaust Fluid/SCR32/AUS32/ARLA32 producers.

    SCR Urea Technical Grade Urea for Adblue/def/aus32


    Alibaba
    https://www.alibaba.com › ... › Other Fluid & Chemicals
    Alibaba
    https://www.alibaba.com › ... › Other Fluid & Chemicals
    SCR Urea Technical Grade Urea for AdBlue/DEF/AUS32/AUS40 DEF Urea. 99.2% purity, 500KG volume, granular state. Ideal for automotive and industrial use.
    4.4(7)

    Automotive Grade Urea Solution Process: AdBlue and DEF


    Vaisala
    https://www.vaisala.com › chemicals-allied-products › a...
    Vaisala
    https://www.vaisala.com › chemicals-allied-products › a...
    Automotive urea AdBlue, also known as Diesel Exhaust Fluid (DEF), is the registered trademark for AUS32 (aqueous urea solution 32.5%).Read more

    AUS32 Grade Urea for Reducing Nitrogen Oxide Emissions


    qdstarco.com
    https://www.qdstarco.com › adblue-grade-urea-product
    qdstarco.com
    https://www.qdstarco.com › adblue-grade-urea-product
    Automotive grade urea is the raw material to produce AdBlue (DEF / AUS 32), which is a kind of liquid for reducing nitrogen oxide pollution in diesel vehicle ...Read more

    Automotive Grade Urea (SCR)


    Risso Fertilizer
    https://risso-chemical.com › Product
    Risso Fertilizer
    https://risso-chemical.com › Product
    Automotive-grade urea is the key raw material for producing AdBlue (DEF/AUS 32), a high-purity urea solution designed to reduce nitrogen oxide (NOx) emissions.Read more

    AUS32 UREA prills


    qduc.com.cn
    https://www.qduc.com.cn › product › AUS32_UREA-en
    qduc.com.cn
    https://www.qduc.com.cn › product › AUS32_UREA-en
    It is the only type of Urea that meets the ISO 22241 specification(Uncoated,Aldehyde,heavy metals free) and the only suitable Urea for the production of Adblue/ ...Read more
    People also ask
    What type of urea is used in AdBlue?
    AdBlue is an aqueous urea solution consisting of 32.5 mass% pure urea and demineralized water. It is used to reduce nitrogen oxide emissions from diesel engines in vehicles. The solution is non-toxic and has been internationally standardized.

    AdBlue - MB Energy


    MB Energy
    https://www.mbenergy.com › glossary › adblue
    MB Energy
    https://www.mbenergy.com › glossary › adblue
    What is AUS 32 in DEF?
    • An aqueous urea solution made with 32.5% high-purity urea (AUS 32 – Industrial Urea) and 67.5% deionized water standardized as. per ISO 22241. Required by SCR equipped.

    AUS-32 / AdBlue / DEF Policy Mechanism & Implications


    ecmaindia.in
    https://www.ecmaindia.in › assets › images
    ecmaindia.in
    https://www.ecmaindia.in › assets › images
    What is 32.5% urea?
    Liquid solution composed of high purity urea and deionized water. It is mostly used in flue gas purification technologies, allowing important reductions of nitrogen oxides (NOx) emissions.

    Urea solution 32.5% - AzomureÈ™


    AzomureÈ™
    https://www.azomures.com › urea-325
    AzomureÈ™
    https://www.azomures.com › urea-325
    What is the difference between technical urea and agricultural urea?
    Agricultural urea is designed primarily for efficient fertilization, rather than for applications requiring the high levels of purity characteristic of industry or automobiles. In contrast, the automotive product and properly selected technical urea must meet more stringent quality requirements.Mar 27, 2026

    Technical, automotive and agricultural urea – prices, uses and availability


    MBF Group
    https://mbfgroup.pl › technical-automotive-and-agricultu...
    MBF Group
    https://mbfgroup.pl › technical-automotive-and-agricultu...

    Web results

    ACN 2023-05 Classification of Technical Grade Urea and ...


    Australian Border Force
    https://www.abf.gov.au › CustomsNotices
    Australian Border Force
    https://www.abf.gov.au › CustomsNotices
    PDF
    Feb 9, 2023 — It is also known as AUS 32 (marketed as AdBlue) and AUS 40 (for marine applications). The requirements for DEF, AUS 32, are set out in ISO ...Read more
    People also search for
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