álcool graxo etoxilatos (FAE): Grades, propiedades and Application Examples
álcool graxo etoxilatos are the workhorse no iónico tensioativos of the detergentee, institutional Limpieza, têxtile, and agroquímico industries. Rendimiento is tuned primarily by fatty chain length and moles of óxido de etileno — two variables that together determine hydrophilic–lipophilic balance, punto de turbidez, wetting speed, foam profile, and Emulsificación power. Venus Ethoxyethers fabrica FAE from C12 to C22 alcohols at custom EO levels from dedicated etoxilação reactors in Goa, India, and the Estados Unidos.
Cuáles son álcool graxo etoxilatos?
FAEs are producido mediante la reacción de a álcool graxo (typically C12–C18, from natural oleochemical or synthetic sources) with óxido de etileno in a catalytic alcoxilação process. The general structure is R–(OCH2CH2)n–OH, where R is the hydrophobic fatty chain and n is the average number of óxido de etileno units.
The etoxilação reaction adds EO units to the alcohol hydroxyl group, converting a water-insoluble álcool graxo into a tensioativo with an adjustable hydrophilic polyoxyethylene tail. Increasing n raises solubilidad en agua, HLB, and punto de turbidez. The fatty chain length controls lipophilicity, wetting on oily surfaces, and foam character — shorter chains (C12–C14) wet faster and foam more; longer chains (C16–C18) emulsify oils more effectively and produce creamier foam.
FAEs belong to the broader class of alcohol etoxilatos and are among the most ampliamente utilizados no iónico tensioativos globally. They replaced alkyl phenol etoxilatos in many Aplicações debido a superior biodegradabilidad profiles. Venus Ethoxyethers etoxilatos C12–C22 alcohols at EO levels from 3 to 30 moles and beyond for specialty Aplicações.
Etoxilados livres de APEO e substituição de NPE
Os etoxilados livres de APEO — principalmente etoxilados de álcool graxo — substituem o etoxilado de nonilfenol (NP-9, NP-10) em detergentes, têxteis e limpeza institucional. Mapeamentos típicos: álcool C13 com 7–9 EO para NP-9 e C12–14 com 9 EO para NP-10. Consulte o guia de alternativas NPE e surfactantes livres de APE.
How EO mole count changes behaviour
óxido de etileno mole count is the primary tuning parameter after alcohol chain length is selected. The table below illustrates typical relationships for C12–C14 alcohol bases — actual values vary by alcohol feedstock and etoxilação distribution.
| moles EO (C12–C14 base) | HLB (approx.) | punto de turbidez (°C, 1%) | Typical use |
|---|---|---|---|
| 3 EO | ~8 | ~50 | Hard-surface Limpieza, wetting, Desengrase |
| 5 EO | ~10 | ~65 | Laundry liquids, dishwash, light-duty cleaners |
| 7 EO | ~12 | ~78 | General detergencia, I&I cleaners, laundry powder aid |
| 9 EO | ~13 | ~85 | Mild hand dish, têxtile Lavado, Emulsificación |
| 12 EO | ~14 | ~95 | High-temperature scour, solubilization |
| 15 EO | ~15 | >100 | Solubilization, dispersant, high-temp processing |
punto de turbidez is the temperature at which a 1% aqueous solution becomes cloudy debido a phase separation of the tensioativo. formuladores must ensure operating temperature stays below punto de turbidez for solubility, or above it when low-foam Rendimiento at high temperature is desired. See our HLB scale guide for Emulsificación selection.
Chain length examples
Etoxilado de álcool laurílico mirístico (C12–C14): Corte padrão de detergente de coco e palmiste — umectação rápida, alta espuma e boa emulsificação de gordura para lava-louças, bases de shampoo e líquidos de lavanderia de uso leve. Exemplo: álcool C12–14, 7 EO a 8–12% em formulações de lavanderia líquida.
C16–C18 (cetyl / stearyl): Creamier foam, stronger Emulsificación of long-chain oils and silicones — used in fabric softener emulsions, heavy-duty institutional cleaners, and têxtile Lavado. Example: C16–18 alcohol, 5 EO as co-emulsificante in silicone softener concentrates.
C9–C11 (synthetic oxo alcohol): Rapid wetting, low viscosity, excellent penetration — preferred in spray cleaners, hard-surface degreasers, and agroquímico tank-mix adjuvants where leaf wetting is critical.
C18+ (stearyl / behenyl): High melting, specialized emulsificantes for waxes, bitumen emulsions, and cosmetic sticks where structure and body are required.
Chain length vs EO selection matrix
| Application need | Chain length | moles EO |
|---|---|---|
| Fast wetting on hard surfaces | C9–C11 or C12–14 | 3–5 |
| Balanced laundry detergencia | C12–14 | 7 |
| têxtile Lavado (cotton) | C16–18 | 9–12 |
| agroquímico leaf wetting | C9–C11 | 6–8 |
| Emulsifiable concentrate (EC) | C12–14 or C13 | 5–7 |
| Mild cuidado pessoal cleanser | C12–14 | 7–9 |
Worked Ejemplos de formulación
Laundry liquid (standard):
- 12% C12–14 alcohol, 7 EO (primary no iónico tensioativo)
- 8% LAS (anionic co-tensioativo for foam and particulate soil)
- 2% MEA / citrate buffer system
- FAE provides grease release, Emulsificación, and hard-water tolerance
- no iónico–anionic synergy reduces total active requirement versus single-tensioativo systems
Hand dishwashing liquid:
- 10–15% C12–14, 7 EO for mildness and foam
- 5–8% LAS or SLES for grease cutting
- FAE improves skin compatibility versus anionic-only systems
têxtile Lavado (cotton):
- 1–2 g/L C16–18, 9 EO at 95°C for 60 minutes
- Removes natural fats, waxes, and spin finishes before bleaching and dyeing
- Operate below punto de turbidez at working concentration for maximum solubility
agroquímico tank mix:
- 0.1–0.25% C9–C11, 6 EO as adjuvant with glyphosate, fungicide, or insecticide
- Improves wetting on waxy leaf surfaces and reduces spray drift when used with appropriate nozzle setup
- Compatible with many pesticide concentrates; jar test before field use
Institutional floor cleaner:
- 3–5% C12–14, 5 EO for wetting and soil removal
- Low-foam profile at use concentration in mop buckets at ambient temperature
Fabricación and quality at Venus
Venus Ethoxyethers produces FAE in dedicated pressurized etoxilação reactors with catalytic base systems. Batch controls include mole-ratio targeting, residual EO stripping, and pH neutralization. Quality parameters on every COA include hydroxyl value, punto de turbidez, pH, colour, and residual óxido de etileno within specification.
Narrow-range etoxilatos — with tighter homologue distribution — are available for Aplicações requiring consistent punto de turbidez and regulatory compliance. Our narrow range etoxilatos page describes capability and benefits.
With 90,000 MT group Fabricación capacity, 24/7 R&D, and toll etoxilação services, Venus supports custom EO levels, alcohol blends, and end-capped grades for low-foam requirements.
Environmental and regulatory profile
Primary álcool graxo etoxilatos with linear alkyl chains biodegrade readily under aerobic conditions. The polyoxyethylene chain breaks down through microbial oxidation; the álcool graxo moiety metabolizes through established β-oxidation pathways. This favourable environmental profile drove widespread adoption as APE replacement in detergenteees and institutional Limpieza from the 1990s onward.
formuladores exporting to EU, US, and other regulated markets should confirm compliance with tensioativo biodegradabilidad requirements (e.g. OECD 301 series) and any regional restrictions on residual EO or 1,4-dioxane content. Venus provides regulatory documentation and can supply grades meeting specific customer limits.
Where álcoois graxos come from
The "fatty" alcohols used to make FAE are long-chain, primary aliphatic alcohols obtained from two main routes. Natural (oleochemical) álcoois graxos are producido mediante high-pressure hydrogenation of Ácido graxo Éster metílicos derivado de óleo de coco, aceite de palmiste, or tallow — a process refined industrially through the mid-twentieth century as catalytic hydrogenation technology matured. Synthetic álcoois graxos are Fabricado from petrochemical feedstocks via the Ziegler process, which builds even-carbon-number alcohols by oligomerizing ethylene with aluminium alkyl catalysts, or via the oxo (hydroformylation) process, which reacts alpha-olefins with syngas to give branched or linear aldehydes that are subsequently hydrogenated to alcohols. Oxo alcohols como the C9–C11 and C13 grades referenced throughout this guide are typically more branched than natural alcohols, which affects biodegradación rate, wetting speed, and punto de turbidez relative to their straight-chain natural counterparts.
The choice between natural and synthetic alcohol feedstock is driven by cost, regional availability, sustainability commitments (including RSPO-certified palm-based supply chains), and the specific Rendimiento profile required — linear natural alcohols generally biodegrade fastest and are favoured in eco-labelled detergenteees, while synthetic oxo alcohols often provide lower cost and useful branching-driven propiedades como improved low-temperature solubility in certain formulaciones.
Historical development of alcohol etoxilatos
etoxilatod álcoois graxos became commercially significant tensioativos beginning in the 1950s and 1960s, as scaled-up óxido de etileno production (following Union Carbide's silver-catalyzed direct oxidation process from the 1930s) made etoxilação economically viable at an industrial scale. Alcohol etoxilatos gained further prominence from the 1980s through 2000s as detergentee formuladores and regulators in Europe and North America progressively phased out alkylphenol etoxilatos (APE) over concerns about the environmental persistence and endocrine-disrupting potential of APE breakdown products como nonylphenol. álcool graxo etoxilatos, with generally faster and more complete biodegradación pathways, became the default replacement across household and institutional Limpieza products, a transition that cemented FAE as the largest-volume no iónico tensioativo class in use today.
Related Venus products
Explore etoxilatod alcohols, Alcohol laurílico etoxilatos, triAlcohol decílico etoxilato, and Éster metílico etoxilatos for lower-foam alternativas. For broader context, read no iónico tensioativos and low-foam tensioativos guide.
Regional guides: FAE for UAE detergenteees and FAE for Brazil industrial Limpieza. Application pages: homecare, têxtile chemicals, agroquímicos.
Request samples, TDS, and Formulación support via Contacte con Venus Ethoxyethers.