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CRITICAL MICELLIZATION CONCENTRATION [2 records]

Record 1 2001-11-08

English

Subject field(s)
  • Chemistry
DEF

The characteristic concentration of surface active agents in solution (in practice, a narrow range of concentration) above which the appearance and development of micelles brings about sudden variation in the relation between the concentration and certain physico-chemical properties of the solution. [Definition standardized by ISO.]

OBS

The critical micellization concentration is determined by the point of intersection of two extrapolated curves which represent such relations above and below the critical concentration.

OBS

The value of the critical micellization concentration can depend, to a certain extent, on the property under consideration and on the method chosen to measure this property.

OBS

critical micellization concentration : term standardized by ISO.

French

Domaine(s)
  • Chimie
DEF

Concentration caractéristique des agents de surface en solution (pratiquement, étroit intervalle de concentration), au-dessus de laquelle l'apparition et le développement de micelles provoquent une variation brusque dans la relation entre la concentration et certaines propriétés physico-chimiques de la solution. [Définition normalisée par l'ISO.]

OBS

La concentration critique pour la formation des micelles est déterminée par le point d'intersection des deux courbes extrapolées qui représentent cette relation au-dessus et au-dessous de la concentration critique.

OBS

La valeur de la concentration critique pour la formation de micelles peut dépendre, jusqu'à un certain point, de la propriété considérée et de la méthode choisie pour mesurer cette propriété.

OBS

concentration critique pour la formation de micelles : terme normalisé par l'ISO.

Spanish

Campo(s) temático(s)
  • Química
Save record 1

Record 2 1998-03-27

English

Subject field(s)
  • Chemistry
DEF

The temperature(in practice, a narrow range of temperatures) at which the solubility of ionic surface active agents rises sharply. At this temperature the solubility becomes equal to the critical micellization concentration(c. m. c.). [Definition standardized by ISO. ]

OBS

In the soap industry the term "Krafft Point" is defined as the temperature below which a transparent soap solution becomes cloudy.

OBS

Krafft temperature: term standardized by ISO.

French

Domaine(s)
  • Chimie
DEF

Température (pratiquement, étroit intervalle de température) à laquelle la solubilité des agents de surface ioniques augmente brusquement. À cette température, la solubilité atteint la valeur de la concentration critique pour la formation de micelles (c.m.c.). [Définition normalisée par l'ISO.]

OBS

Dans l'industrie des savons, on désigne par "Point de Krafft" la température à laquelle une solution transparente de savon devient trouble par refroidissement.

OBS

température de Krafft : terme normalisé par l'ISO.

Spanish

Save record 2

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