Do AEO-20 and MOA-20 identify the same grade?

AEO-20 and MOA-20 are commercial designations used for this approximately 20EO C12–C14 alcohol ethoxylate. Grade equivalence depends on the alcohol cut, EO distribution and agreed quality limits. Identical labels do not guarantee identical formulation performance.

What does “20EO” mean in AEO-20?

It indicates an approximate average of 20 ethylene oxide units on a C12–C14 alcohol distribution. The material contains multiple alkyl and ethoxylate chain lengths, so “20EO” is a grade designation rather than one molecule with a fixed formula.

Which conditions matter when comparing cloud point and melting behavior?

Cloud-point results depend on test concentration and medium, including any salt or solvent. Melting or softening results depend on composition, thermal history and measurement method. Compare grades under the same reported conditions, then check dissolution, foam and emulsion stability at the intended process temperature.

AEO-20 / MOA-20 C12-14 Alcohol Ethoxylate (20EO) CAS 68439-50-9

AEO-20 / MOA-20 (CAS 68439-50-9) is a nonionic C12–C14 fatty alcohol ethoxylate with an average of about 20 ethylene oxide units. Neat grades are typically white to off-white waxy solids at 20–25 °C. The high EO level suits oil-in-water emulsification and solubilization in detergent, textile and aqueous coating formulations. Alcohol cut, EO distribution and the agreed quality limits define the quoted grade. COA, TDS and SDS can be provided for product qualification and handling.

CAS: 68439-50-9
Synonyms: AEO-20; MOA-20; Alcohols, C12-14, ethoxylated (about 20EO); Lauryl/Myristyl Alcohol Ethoxylate 20EO
Molecular Formula: General structure R–O–(CH₂CH₂O)ₙ–H; R represents C12–C14 alkyl chains and n averages about 20. The commercial grade has a distribution of chain lengths, not one fixed molecular formula.
Grade: Industrial nonionic surfactant; quoted grades are specified by alcohol cut, average EO, HLB, hydroxyl value, water, physical form and thermal test conditions.
Package: Drum packing and net weight are specified in the quotation, with handling suited to the waxy grade and destination requirements.

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Product Description

1 Parameters

2 Applications and grade selection

3 Quality documents and testing

4 Storage and handling

Parameters

Product identity	C12–C14 fatty alcohol ethoxylate, CAS 68439-50-9; nonionic grade with an average near 20EO.
Typical physical form	White to off-white waxy solid at 20–25 °C is a commercial-grade reference; supplied form is stated for the quoted grade.
HLB	Around 16–17 is a commercial 20EO reference, not a universal limit. The grade value and its basis are stated in the TDS; HLB is not a purity measure.
Hydroxyl value	Reported in mg KOH/g with the agreed range and test method; the average EO designation alone does not define the batch limit.
Water and pH	Water by a compatible Karl Fischer method; aqueous pH with test concentration and temperature stated.
Cloud point and melting range	Cloud point requires test medium, concentration and method. Melting or softening range uses its own stated method and sample conditions.
Application evaluation	Dissolution, wetting, emulsification, solubilization, foam and stability under the intended formulation and process conditions.

Applications and grade selection

AEO-20 is used for oil-in-water emulsification and solubilization in aqueous cleaners and coatings, and for textile scouring and processing. Evaluate dissolution, wetting, foam and emulsion stability in your complete formulation, including oils, detergent builders, electrolytes, water hardness and process temperature.

For a lower-EO comparison, AEO-7 is a C12–C14 grade around 7EO. AEO-9 / MOA-9 is listed under CAS 9002-92-0; its alcohol-feedstock range is compared separately from this C12–C14 grade. Changes in EO level and alcohol cut affect formulation behavior, so substitution requires application testing.

E-1307 isotridecyl alcohol ethoxylate has a branched C13 alcohol base and nominal 7EO. C9–11 alcohol ethoxylate offers a shorter alcohol-cut comparison, with EO level assessed for the chosen grade. These are options for comparative cleaning and wetting tests, not direct equivalents of AEO-20.

Quality documents and testing

A Certificate of Analysis (COA), Technical Data Sheet (TDS) and Safety Data Sheet (SDS) can be provided for the quoted AEO-20 grade. The COA reports agreed batch quality tests; the TDS describes grade properties and handling; the SDS provides hazard and safe-use information.

When free polyethylene glycol (PEG) is controlled in the purchase specification, HPLC can determine that component. Characterizing EO and alkyl-chain distributions requires a suitable liquid-chromatography method and detector. A chromatographic area percentage is not automatically a mass-fraction purity result.

Residual ethylene oxide and 1,4-dioxane are separate targets for headspace GC-MS when residue limits are specified. Applicable chromatographic test information can be provided with the analyte, method, units such as mg/kg, and quantification limit. These tests do not measure the purity of the entire 20EO mixture.

Storage and handling

Keep containers tightly closed in a dry, ventilated area, protected from moisture, contamination and excessive heat. Warming, mixing and sampling conditions for the waxy grade are stated in the TDS. Use the protective equipment and spill controls specified in the SDS, and prevent uncontrolled release to drains.

FAQ - Technical & Supply Chain

Q:
Do AEO-20 and MOA-20 identify the same grade?

A: AEO-20 and MOA-20 are commercial designations used for this approximately 20EO C12–C14 alcohol ethoxylate. Grade equivalence depends on the alcohol cut, EO distribution and agreed quality limits. Identical labels do not guarantee identical formulation performance.
Q:
What does “20EO” mean in AEO-20?

A: It indicates an approximate average of 20 ethylene oxide units on a C12–C14 alcohol distribution. The material contains multiple alkyl and ethoxylate chain lengths, so “20EO” is a grade designation rather than one molecule with a fixed formula.
Q:
Which conditions matter when comparing cloud point and melting behavior?

A: Cloud-point results depend on test concentration and medium, including any salt or solvent. Melting or softening results depend on composition, thermal history and measurement method. Compare grades under the same reported conditions, then check dissolution, foam and emulsion stability at the intended process temperature.

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