Search results
Results from the WOW.Com Content Network
Ethoxylation. In organic chemistry, ethoxylation is a chemical reaction in which ethylene oxide (C2H4O) adds to a substrate. It is the most widely practiced alkoxylation, which involves the addition of epoxides to substrates. In the usual application, alcohols and phenols are converted into R (OC2H4)nOH, where n ranges from 1 to 10.
Fatty alcohol. Fatty alcohols (or long-chain alcohols) are usually high-molecular-weight, straight-chain primary alcohols, but can also range from as few as 4–6 carbons to as many as 22–26, derived from natural fats and oils. The precise chain length varies with the source. [1][2] Some commercially important fatty alcohols are lauryl ...
Narrow-range ethoxylates (NREs) in chemistry are fatty alcohol polyglycol ethers with a narrow homolog distribution and are known nonionic surfactants.They can be produced industrially, for example, by the addition of ethylene oxide onto fatty alcohols in the presence of suitable catalysts (layer compounds which have been calcined or hydrophobized with fatty acids). [1]
The word "surfactant" is a blendof surface-active agent,[1]coined in 1950 .[2] As they consist of a water-repellent and a water-attracting part, they enable water and oil to mix; they can form foam and facilitate the detachment of dirt. Surfactants are among the most widespread and commercially important chemicals.
Medical. Polysorbate 80 is a surfactant and solubilizer used in a variety of oral and topical pharmaceutical products. Polysorbate 80 is also an excipient that is used to stabilize aqueous formulations of medications for parenteral administration, and used as an emulsifier in the making of the antiarrhythmic amiodarone. [9]
C12-15 pareth-12 (INCI name) is an emulsifier and surfactant commonly used in cosmetics formulations. It is a polyethylene glycol ether formed by combining synthetic C 12 –C 15 fatty alcohols with 12 moles of ethylene oxide. According to the INCI, "the term Pareth applies to ethoxylated paraffinic alcohols containing both even- and odd-carbon ...
Phenoxyethanol has germicidal and germistatic properties. [5] It is often used together with quaternary ammonium compounds.. Phenoxyethanol is used as a perfume fixative; an insect repellent; an antiseptic; [6] a solvent for cellulose acetate, dyes, inks, and resins; a preservative for pharmaceuticals, cosmetics and lubricants; [7] an anesthetic in fish aquaculture; [8] [9] and in organic ...
PEG derivatives, such as narrow range ethoxylates, are used as surfactants. PEG has been used as the hydrophilic block of amphiphilic block copolymers used to create some polymersomes. [17] PEG is a component of the propellent used in UGM-133M Trident II Missiles, in service with the United States Navy. [18]