nonionic surface-active agent

См. также в других словарях:

• agent — 1. An active force or substance capable of producing an effect. For agents not listed here, see the specific name. 2. A disease, a factor such as a microorganism, chemical substance, or a form of radiation the presence or …   Medical dictionary

• polyoxyl 40 stearate — A mixture of the monostearate and distearate esters of a condensation polymer, H(OCH2CH2)n OCOC16H32CH3 (n is approximately 40); it is a nonionic surface active agent used as an emulsifying agent in hydrophilic ointment and other emulsions …   Medical dictionary

• poloxalene — An oxyalkylene polymer, nonionic surface active agent similar in actions and uses to dioctyl sodium sulfosuccinate; used in constipation due to hard dry stools. SYN: poloxalkol. * * * pol·ox·a·lene (pol okґsə lēn) [USP] a liquid… …   Medical dictionary

• soap and detergent — ▪ chemical compound Introduction       substances that, when dissolved in water, possess the ability to remove dirt (detergent) from surfaces such as the human skin, textiles, and other solids. The seemingly simple process of cleaning a soiled… …   Universalium

• Surfactant — A fluid secreted by the cells of the alveoli (the tiny air sacs in the lungs) that serves to reduce the surface tension of pulmonary fluids; surfactant contributes to the elastic properties of pulmonary tissue. In more technical terms, a… …   Medical dictionary

• Tensioactif — Un tensioactif ou agent de surface est un composé qui modifie la tension superficielle entre deux surfaces. Les composés tensioactifs sont des molécules amphiphiles, c est à dire qu elles présentent deux parties de polarité différente, l une… …   Wikipédia en Français

• Emulsion polymerization — is a type of radical polymerization that usually starts with an emulsion incorporating water, monomer, and surfactant. The most common type of emulsion polymerization is an oil in water emulsion, in which droplets of monomer (the oil) are… …   Wikipedia

• detergent — /di terr jeuhnt/, n. 1. any of a group of synthetic, organic, liquid or water soluble cleaning agents that, unlike soap, are not prepared from fats and oils, are not inactivated by hard water, and have wetting agent and emulsifying agent… …   Universalium

• Surfactant — Surfactants are wetting agents that lower the surface tension of a liquid, allowing easier spreading, and lower the interfacial tension between two liquids. Etymology The term surfactant is a blend of surface acting agent . Surfactants are… …   Wikipedia

• Spermatocide — Any agent that is destructive to spermatozoa (that is, kills sperm). Nonoxynol 9 is the most commonly encountered spermatocide in the United States. (The nonoxynols, technically speaking, are nonionic surfactant [surface active] mixtures that… …   Medical dictionary

• Flux (metallurgy) — Rosin used as flux for soldering A flux pen used f …   Wikipedia