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    Related: AEO-9 MOA-9 Laureth-9
    • AEO-9 / MOA-9 Fatty Alcohol Ethoxylate (About 9 EO) CAS 9002-92-0
    • AEO-9 / MOA-9 Fatty Alcohol Ethoxylate (About 9 EO) CAS 9002-92-0
    • AEO-9 / MOA-9 Fatty Alcohol Ethoxylate (About 9 EO) CAS 9002-92-0

    AEO-9 / MOA-9 Fatty Alcohol Ethoxylate (About 9 EO) CAS 9002-92-0

    AEO-9 / MOA-9 (CAS 9002-92-0) is a nonionic lauryl-alcohol ethoxylate with an average of about 9 ethylene-oxide units, also described as polyoxyethylene (9) lauryl ether or Laureth-9. It provides wetting, detergency, emulsification and dispersion in industrial cleaners and textile formulations. Alcohol-chain composition and the EO distribution distinguish commercial grades with similar market names. COA (Certificate of Analysis), TDS (Technical Data Sheet) and SDS (Safety Data Sheet) are available for specification and handling information.

    • CAS: 9002-92-0
    • Synonyms: AEO-9; MOA-9; Fatty alcohol ethoxylate 9EO; Polyoxyethylene (9) lauryl ether; Laureth-9; POE(9) lauryl alcohol; Dodecan-1-ol ethoxylated (nominal 9 EO grade)
    • Molecular Formula: Lauryl-alcohol ethoxylate distribution; general structure C12H25-O-(C2H4O)n-H, with nominal average n about 9. The commercial product contains a range of EO homologues rather than one fixed molecular formula.
    • Grade: Industrial nonionic surfactant; alcohol-chain composition, EO profile, hydroxyl and acid values, water, appearance and application-specific requirements are defined for the quoted grade.
    • Package: Drum or bulk packaging; net weight and container requirements are specified with the quotation.
    • NLP No.: 500-002-6
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    Product Description

    1 Composition and Grade Selection
    2 Quality Specifications and Test Basis
    3 Applications and Related Grades
    4 Storage and Handling

    Composition and Grade Selection

    The number 9 describes a nominal average degree of ethoxylation. It does not mean a pure n=9 molecule or PEG 900. Polyoxyethylene (9) lauryl ether and Laureth-9 describe the lauryl-derived grade. Other products sold as AEO-9 or MOA-9 can use a broader alcohol-chain range, including C12–C14, and may have different identifiers and performance.

    Quality Specifications and Test Basis

    Quality item Specification basis
    Alcohol and EO composition Lauryl-alcohol ethoxylate with nominal average 9 EO. The alcohol-chain and EO-homologue profiles belong to the specified grade; the CAS number alone does not fix the EO count.
    Hydroxyl and acid values Reported in mg KOH/g under the agreed titration methods. Hydroxyl value is an average functional-group control, not a direct measurement of every EO homologue.
    Water and active matter Water by an appropriate Karl Fischer method on a stated mass basis. Active matter is specified separately with its definition, method and as-supplied or dry reporting basis.
    pH Measured in an aqueous solution at the stated concentration and temperature; the test conditions accompany the quoted value.
    Cloud point and HLB Cloud point is reported in °C with the method, concentration, test medium and endpoint. HLB is a separate, dimensionless selection guide on its stated reference basis; it is not the cloud-point result.
    Appearance Colour and physical form are specified at a stated temperature. A grade may become pasty or solid at lower temperatures; liquid appearance is not a universal year-round specification.

    Chromatographic profile information can be provided for grade comparison. HPLC with suitable detection, such as ELSD, can characterize alcohol-chain and EO-homologue distributions under an appropriate method. Peak-area percentages are not automatically mass purity: quantitative composition requires a defined calibration, detector response and reporting basis. Where the grade or end use requires it, residual ethylene oxide and 1,4-dioxane are assessed separately by a suitable validated GC method with a stated quantitation limit.

    Applications and Related Grades

    Typical formulation roles include wetting and detergency in industrial and hard-surface cleaners, textile scouring and processing aids, and oil-in-water emulsification or dispersion. Performance depends on the complete formulation, including temperature, water quality, electrolyte content and the oil phase.

    For comparisons across ethoxylation levels, AEO-7 (7 EO), AEO-20 (20 EO) and Laureth-4 are related grades, not automatic one-for-one replacements. Their alcohol-chain ranges can also differ. A branched-alcohol option, E-1307 isotridecyl alcohol ethoxylate, offers a different hydrophobic structure. Compare wetting, foam, emulsification and stability in the intended formulation before selecting an alternative.

    Storage and Handling

    Keep sealed in a compatible container in a cool, dry, ventilated place, protected from moisture, contamination and excessive heat. Grade-specific storage, shelf-life and any permitted warming instructions accompany the TDS and SDS. Use suitable gloves and eye protection and follow the supplied SDS and applicable transport and disposal requirements.

    The AEO-9 / MOA-9 market name does not establish food, pharmaceutical or personal-care approval. Suitability for a regulated use depends on the specified grade and the target requirements. For a quotation, send the application or reference grade, approximate quantity and destination; detailed acceptance criteria can then be agreed.

    FAQ - Technical & Supply Chain

    • Q:

      Do AEO-9, MOA-9 and Laureth-9 always identify the same grade?

      A: Not always. AEO-9 and MOA-9 are market labels for fatty-alcohol ethoxylates near nine EO units. Laureth-9 describes a lauryl-derived ethoxylate. Alcohol-chain composition, EO distribution, active-matter basis and identifiers can differ between commercial products; compare the specified grade rather than the abbreviation alone.
    • Q:

      Can AEO-7 or AEO-20 replace AEO-9 directly?

      A: Not automatically. Different EO levels and alcohol-chain compositions can change water affinity, cloud point, foam and emulsification. A common surfactant family or CAS number does not establish interchangeability. Select the grade by the agreed quality specification and performance in the full formulation.
    • Q:

      Which quality documents and test information are available for AEO-9 / MOA-9?

      A: COA, TDS and SDS are available for the quoted grade, together with applicable specification and test information. Chromatographic profiles can support EO and alcohol-chain comparison; they are not an uncalibrated mass-purity result. Residual ethylene oxide and 1,4-dioxane testing is separate from the average EO number and is included where the grade or end use requires it.

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