Synonyms: fatty alcohol ethoxylate; poly oxy ethylene alkyl alcohol; poly ethylene alkyl ether
CnH2n+1(OCH2CH2).mOH, in which n is the number of C-atoms in the fatty chain and e is the average number of moles ethylene oxide per molecule
Ethoxylated fatty alcohols are mild, non-ionic surfactants based on RSPO palm kernel oil. Their mildness results from the fact that non-ionic surfactants do not have a strong electric charge. They are especially suitable in:
The length of the (dirt dissolving) fatty chain is given by the number of C-atoms (C8C10 mans chains of 8 to 10 C-atoms). The number of water binding ethoxy groups is given by the amount of mol EO; the number of bonded molecules ethylene oxide per molecule Ethoxybrite EFA.
There are synthetic ethoxylated fatty alcohols (made from natural oil); those have an odd number of C-atoms (C9-C11-C13-C15-C17, etc). The ethoxylated fatty alcohols with even number of C-atoms are derived from natural sources like palm oil. So the even number of C-atoms in Ethoxybrite EFA assures you of a sustainable raw material.
Historically, the ethoxylation is performed with ethylene oxide of petrochemical source.
Sirius International and its partners managed to perform above mentioned step by exclusively adding ethylene oxide from a vegetal source. As such, Ethoxybrite EFA biobased is the ideal raw material for any green, 100% sustainable, ecologicallly certified detergent.
The higher the cloud point, the higher the solubility of Ethoxybrite EFA in water. The cloud point is the temperature at which an aqueous solution of a water-soluble surfactant becomes turbid. This is also the point at which the carbon chains acquire so much energy that they let go of each other. The non-ionic separates into its own phase. For maximum efficacy, Ethoxybrite’s EFA should be used at temperatures at or just below their cloud point. Optimizing micelle formation can limit the chain lengths of ethoxylated fatty alcohols that are available for your application. Our Ethoxybrite EFA line has a number of chain lengths available so that one can tailor the non-ionic to do what is required.
Ethoxybrite’s EFA are liquid raw materials and ideal for use in liquid detergents. They are also easily absorbed onto carriers such as Silibrite SMS and Silibrite SDS, and thus applicable in washing powders.
Ethoxybrite’s EFA should be added to water while stirring. When water is added to Ethoxybrite EFA, the viscosity of the solution can temporarily increase.