TERMIUM Plus®

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INDICE ACIDITE [1 record]

Record 1 2004-03-04

English

Subject field(s)
  • Analytical Chemistry
  • Petrochemistry
DEF

The number of milligrams of potassium hydroxide neutralized by the free acids present in one gram of oil, fat, or wax.

CONT

Our gels do not contain any free acids. Particularly no methacrylic acid. The acid number (mg KOH/g) is below 2.

OBS

The determination is made by titrating the sample in hot 95% ethyl alcohol, using phenolphthalein as indicator.

French

Domaine(s)
  • Chimie analytique
  • Chimie du pétrole
DEF

Nombre de milligrammes de potasse caustique nécessaires pour neutraliser l'acidité libre d'un gramme de matière grasse.

CONT

Indice de neutralisation (acidité et/ou basicité des huiles). L'indice d'acide, appelé encore «Acid Number (AN)» et anciennement «Total Acid Number (TAN)» est, par définition, le nombre de milligrammes de potasse nécessaire à la neutralisation des acides organiques ou minéraux contenus dans un gramme d'huile (mg KOH/g).

Spanish

Campo(s) temático(s)
  • Química analítica
  • Petroquímica
DEF

Miligramos de hidróxido potásico que son capaces de neutralizar los ácidos grasos libres que aparecen en un gramo de grasa.

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