TERMIUM Plus®
The Government of Canada’s terminology and linguistic data bank.
TOTAL ACID NUMBER [2 records]
Record 1 - internal organization data 2004-03-04
Record 1, English
Record 1, Subject field(s)
- Analytical Chemistry
- Petrochemistry
Record 1, Main entry term, English
- acid value
1, record 1, English, acid%20value
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
- acid number 2, record 1, English, acid%20number
correct
- AN 3, record 1, English, AN
avoid, obsolete
- AN 3, record 1, English, AN
- total acid number 4, record 1, English, total%20acid%20number
avoid, obsolete
- TAN 3, record 1, English, TAN
avoid, obsolete
- TAN 3, record 1, English, TAN
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
The number of milligrams of potassium hydroxide neutralized by the free acids present in one gram of oil, fat, or wax. 5, record 1, English, - acid%20value
Record number: 1, Textual support number: 1 CONT
Our gels do not contain any free acids. Particularly no methacrylic acid. The acid number (mg KOH/g) is below 2. 6, record 1, English, - acid%20value
Record number: 1, Textual support number: 1 OBS
The determination is made by titrating the sample in hot 95% ethyl alcohol, using phenolphthalein as indicator. 5, record 1, English, - acid%20value
Record 1, French
Record 1, Domaine(s)
- Chimie analytique
- Chimie du pétrole
Record 1, Main entry term, French
- indice d'acide
1, record 1, French, indice%20d%27acide
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- indice d'acidité 2, record 1, French, indice%20d%27acidit%C3%A9
correct, masculine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Nombre de milligrammes de potasse caustique nécessaires pour neutraliser l'acidité libre d'un gramme de matière grasse. 3, record 1, French, - indice%20d%27acide
Record number: 1, Textual support number: 1 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). 4, record 1, French, - indice%20d%27acide
Record 1, Spanish
Record 1, Campo(s) temático(s)
- Química analítica
- Petroquímica
Record 1, Main entry term, Spanish
- índice de acidez
1, record 1, Spanish, %C3%ADndice%20de%20acidez
correct, masculine noun
Record 1, Abbreviations, Spanish
Record 1, Synonyms, Spanish
- índice de ácido 2, record 1, Spanish, %C3%ADndice%20de%20%C3%A1cido
masculine noun
Record 1, Textual support, Spanish
Record number: 1, Textual support number: 1 DEF
Miligramos de hidróxido potásico que son capaces de neutralizar los ácidos grasos libres que aparecen en un gramo de grasa. 1, record 1, Spanish, - %C3%ADndice%20de%20acidez
Record 2 - internal organization data 1992-07-03
Record 2, English
Record 2, Subject field(s)
- Chemical Engineering
- Biomass Energy
Record 2, Main entry term, English
- prehydrolysis
1, record 2, English, prehydrolysis
correct
Record 2, Abbreviations, English
Record 2, Synonyms, English
Record 2, Textual support, English
Record number: 2, Textual support number: 1 CONT
It has long been known that some components of wood are relatively easily hydrolyzed. The application of hydrolysis for the degradation of certain carbohydrates to low-molecular sugars is based on experience gained in the total hydrolysis of wood.... During the Second World War, a number of pulp mills were built in Germany designed to use deciduous woods or straw in an alkaline cook with a prehydrolysis. The hydrolyzates were processed for the production of fodder yeast. By this process, deciduous woods and straw were treated at 120° to 130°C with 0. 5% to 1% sulfuric acid and, in a second stage, with a conventional kraft cooking liquor(22% sulfidity) with a maximum cooking time and temperature of 3 hours and 165°C to produce pulps with a high [alpha]-cellulose content. 2, record 2, English, - prehydrolysis
Record 2, French
Record 2, Domaine(s)
- Génie chimique
- Énergie de la biomasse
Record 2, Main entry term, French
- préhydrolyse
1, record 2, French, pr%C3%A9hydrolyse
correct, feminine noun
Record 2, Abbreviations, French
Record 2, Synonyms, French
- hydrolyse partielle 2, record 2, French, hydrolyse%20partielle
feminine noun
Record 2, Textual support, French
Record number: 2, Textual support number: 1 CONT
Bien des facteurs interviennent dans la pyrolyse du bois et la séparation des différents produits chimiques qui en découlent. [...] Si l'on distille rapidement le bois on a un rendement élevé en goudrons [...] La durée du traitement de pyrolyse ou distillation est donc capitale; plus elle se prolonge, plus le rendement en charbon de bois est élevé et les goudrons disparaissent presque totalement [...] Une préhydrolyse semble encore plus avantageuse si l'on veut effectuer ensuite une pyrolyse rapide. Il n'y a pratiquement plus d'hémicelluloses et le bois peut alors être chauffé sans dégradation jusqu'à plus de 250°C, les phénols sont déméthylés [...] La préhydrolyse, grâce à une imprégnation préalable à chaud du bois avec un acide dilué, conduit à un certain rendement en furfural (5 à 8 p. cent) avant de passer à la pyrolyse proprement dite. 3, record 2, French, - pr%C3%A9hydrolyse
Record 2, Spanish
Record 2, Textual support, Spanish
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