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    AI Overview
    Alpha olefin sulfonate (AOS) hydrolysis is a critical industrial process step, typically following the sulfonation of normal alpha olefins with
    SO3cap S cap O sub 3
    𝑆𝑂3
    , designed to convert intermediate sultones (cyclic sulfate esters) into soluble, biodegradable hydroxyalkane sulfonates and alkene sulfonates. The process involves base hydrolysis, commonly at temperatures from
    120
    –
    180∘C
     to reduce residual sultone content below 10 ppm, ensuring safety in surfactants. 
    Key Aspects of Alpha Olefin Sulfonate Hydrolysis: 
    • Purpose: The primary goal is to convert hydrolyzable sultones into hydroxyalkane sulfonates (3- and 4-) and alkene sulfonates (allylic and homoallylic).
    • Reaction Steps: Sulfonation of alpha-olefins produces a mixture of sulfonic acids and cyclic sultones. The hydrolysis, or neutralization/hydrolysis stage, breaks down the sultones, often with sodium hydroxide (caustic soda) and hydrogen peroxide.
    • Conditions: The process often takes place at elevated temperatures (
      120∘C120 raised to the composed with power C
      120∘C
       to
      180∘C180 raised to the composed with power C
      180∘C
      ) to ensure high conversion, with modern techniques using waste heat recovery to minimize energy use.
    • Product Components: The hydrolyzed alpha olefin sulfonate (AOS) consists of a mixture of approximately 60-65% alkene sulfonates and 35-40% hydroxyalkane sulfonates, which are effective surfactants.
    • Sultone Control: The process is crucial to ensure levels of toxic unsaturated sultones remain below 10 ppm and unsubstituted alkane sultones below 10 ppm for consumer safety.
    • Equipment: The hydrolysis system typically involves a neutralization reactor, a steam heater, a hydrolyzer, and heat exchangers. 
    • Unit 11 Alpha Olefins Hydrolysis
      The Sulfolactone hydrolysis system for alpha olefin sulfonate (AOS) consists of: * A boosting pump * Three heat exchangers * A hyd...
      WEIXIAN (Nanjing) Science Technology co., ltd
    • CN102516134A - Process for hydrolyzing alpha-olefin sulfonate and ...
      5. a kind of α-Xi Jihuangsuanyan hydrolysis process according to claim 4 is characterized in that: the temperature of charge in th...
      Google Patents
    • Process for hydrolyzing alpha-olefin sulfonate and system for ...
      The technical scheme is that the process for hydrolyzing the alpha-olefin sulfonate comprises the following steps of: 1) conveying...
      Google Patents
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    Web results

    Normal Alpha Olefins Resources


    Chevron Phillips Chemical
    https://www.cpchem.com › ... › Normal Alpha Olefins
    Chevron Phillips Chemical
    https://www.cpchem.com › ... › Normal Alpha Olefins
    Our normal alpha olefins will react with carbon monoxide and a variety of nucleophiles to produce aldehydes, alcohols, esters or acid chlorides.Read more

    Process for hydrolyzing alpha-olefin sulfonate and system ...


    Google Patents
    https://patents.google.com › patent
    Google Patents
    https://patents.google.com › patent
    The most of sultone formed in the AOS production process can be hydrolyzed under the condition of high temperature, alkalescence, and neutralization ...Read more

    α-Olefin sulfonate


    Wikipedia
    https://en.wikipedia.org › wiki › Α-Olefin_sulfonate
    Wikipedia
    https://en.wikipedia.org › wiki › Α-Olefin_sulfonate
    α-Olefin sulfonates are produced by sulfonation of alpha-olefins, typically using sulfur trioxide. ... Base hydrolysis of the mixture gives alkene ...Read more

    Unit 11 Alpha Olefins Hydrolysis


    WEIXIAN (Nanjing) Science Technology co., ltd
    https://www.njweixian.com › unit-11-alpha-olefins-hydr...
    WEIXIAN (Nanjing) Science Technology co., ltd
    https://www.njweixian.com › unit-11-alpha-olefins-hydr...
    The Sulfolactone hydrolysis system consists of a boosting pump, three heat exchangers, and a hydrolyzer. After aging, α- Olefin sulfonate is pumped to the ...Read more
    People also ask
    Which is better SLES or AOS?
    While SLES remains a well-established surfactant, AOS is an increasingly popular option with superior short-term advantages in cost efficiency, regulatory compliance, formulation ease, and consumer acceptance. Long-term continued development in biobased olefin technologies will improve its environmental footprint.Mar 5, 2026

    From Sodium Laureth Sulfate to Sodium C14-16 Olefin Sulfonate


    Colonial Chemical
    https://colonialchem.com › blog › personal-care › a-case...
    Colonial Chemical
    https://colonialchem.com › blog › personal-care › a-case...
    Is alpha olefin sulfonate biodegradable?
    AOS Powder, or Alpha Olefin Sulfonate, is an anionic surfactant derived from alpha-olefins. It is sulfate-free, biodegradable, and widely used in various cleaning and personal care products. Its primary function is to lower surface tension, allowing better cleaning and foaming performance.

    AOS Powder: The Ultimate Guide to Alpha Olefin Sulfonate - singleblog


    singleblog
    https://www.shreekrishnaenviroventure.com › blog › aos...
    singleblog
    https://www.shreekrishnaenviroventure.com › blog › aos...
    What are alpha olefins used for?
    Normal alpha olefins or their derivatives are used extensively as polyethylene comonomers, plasticizers, synthetic motor oils, lubricants, automotive additives, surfactants, paper size, and in a wide range of specialty applications.

    Normal Alpha Olefins Products | Chevron Phillips Chemical


    Chevron Phillips Chemical
    https://www.cpchem.com › what-we-do › solutions › pro...
    Chevron Phillips Chemical
    https://www.cpchem.com › what-we-do › solutions › pro...
    What are the side effects of alpha olefin sulfonate?
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    Web results

    Normal Alpha Olefins FAQ


    Chevron Phillips Chemical
    https://www.cpchem.com › ... › Normal Alpha Olefins
    Chevron Phillips Chemical
    https://www.cpchem.com › ... › Normal Alpha Olefins
    Other metals can catalyze this reaction, but chloroplatinic acid (CPA) is the preferred catalyst because of its high activity and low catalyst concentrations.Read more

    Chemical Economics Handbook - Linear alpha-Olefins ( ...


    S&P Global
    https://cdn.ihs.com › www › pdf › CEH-Linear-Al...
    S&P Global
    https://cdn.ihs.com › www › pdf › CEH-Linear-Al...
    PDF
    Nov 30, 2010 — Typical reaction conditions are temperatures of 116-132°C and pressures of 2,700-. 3,000 psi. In the displacement step, the trialkylaluminum ...Read more
    78 pages

    The Chemistry and Manufacturing of Alpha Olefin ...


    NINGBO INNO PHARMCHEM CO.,LTD.
    https://www.nbinno.com › ... › Alpha Olefin Sulfonate
    NINGBO INNO PHARMCHEM CO.,LTD.
    https://www.nbinno.com › ... › Alpha Olefin Sulfonate
    Neutralization: NaOH reacts with the sulfonic acids to form sodium alpha-olefin sulfonates and water. Hydrolysis: During the sulfonation and neutralization, ...Read more
    Images
    China Unit 11 Alpha Olefins Hydrolysis, Unit 11 Alpha ...
    China Unit 11 Alpha Olefins Hydrolysis, Unit 11 Alpha ...
    WEIXIAN (Nanjing) Science Technology co., ltd
    NAO Frequently Asked Questions | Chevron Phillips Chemical
    NAO Frequently Asked Questions | Chevron Phillips Chemical
    Chevron Phillips Chemical
    China Unit 11 Alpha Olefins Hydrolysis, Unit 11 Alpha ...
    China Unit 11 Alpha Olefins Hydrolysis, Unit 11 Alpha ...
    WEIXIAN (Nanjing) Science Technology co., ltd
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    Web results

    Developing Linear-alpha-Olefins Technology


    OSTI (.gov)
    https://www.osti.gov › etdeweb › servlets › purl
    OSTI (.gov)
    https://www.osti.gov › etdeweb › servlets › purl
    PDF
    by A Meiswinkel · 2011 · Cited by 17 — Reaction Section - The α-SABLIN Reactor. The α-SABLIN process is based on a Zr(IV)carboxylate as catalyst and special aluminiumalkyl components as co-catalyst.Read more

    ALFA OLEFINS CAS N


    OECD
    https://hpvchemicals.oecd.org › handler
    OECD
    https://hpvchemicals.oecd.org › handler
    PDF
    by O SIDS — The predicted or measured water solubilities of these alpha olefins range from 50 mg/L at 200C for 1-hexene to 0.0004 mg/L at 250C for 1-tetradecene, which ...Read more

    Scholarly articles for Alpha Olefins Hydrolysis

    … of octameric methylaluminoxanes by hydrolysis of … - ‎Hirvi - Cited by 76
    Reactions of alpha-olefins - ‎Clippinger - Cited by 16
    … ethers. Acid-catalyzed hydrolysis of alkenyl alkyl … - ‎Okuyama - Cited by 54
    People also search for
    Alpha olefins hydrolysis formula
    Alpha olefins hydrolysis wikipedia
    Normal alpha olefins

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