Definition of Acid value

1. Noun. (chemistry) the amount of free acid present in fat as measured by the milligrams of potassium hydroxide needed to neutralize it. "As the glycerides in fat slowly decompose the acid value increases"

Category relationships: Chemical Science, Chemistry
Generic synonyms: Definite Quantity

Lexicographical Neighbors of Acid Value

acid reaction
acid red 87
acid red 91
acid reflux test
acid rigor
acid rock
acid salt
acid seromucoid
acid soluble spore protein
acid stain
acid sulfate
acid tartrate
acid test
acid tests
acid tide
acid value (current term)
acid washing
acid wave

Literary usage of Acid value

Below you will find example usage of this term as found in modern and/or classical literature:

1. Asphalts and Allied Substances: Their Occurrence, Modes of Production, Uses by Herbert Abraham (1920)
"Free Acids (" acid value "). Boil 5.00 g. of the material with 50 cc of carefully ... The acid value is equivalent to the number of milligrams of potassium ..."

2. Chemical Technology and Analysis of Oils, Fats, and Waxes by Julius Lewkowitsch (1904)
"The acid value The acid value indicates the number of milligrams of potassium ... For the determination of the acid value of a fat or wax the sample is ..."

3. Technical Methods of Chemical Analysis by Georg Lunge (1914)
"Determination of the acid value. The acid value indicates the number of ... The acid value is thus a measure of the free fatty acids in a fat or wax. ..."

4. Chemical Abstracts by American Chemical Society (1916)
"22-3°, di» 0.951 and d« 0.940, [a]lo° + 52.0°, acid value 23.9, ... odor resembling that of linseed oil, da, 0.925, acid value 4.90, sapon. value 197.0. ..."

5. Food Inspection and Analysis: For the Use of Public Analysts, Health by Albert Ernest Leach (1920)
"Determination of Malic acid value.—Leach and Lythgoe Method,^ modified by Cowles.\—The modified method differs from the original chiefly in that no ammonia ..."

6. Pharmaceutical and Food Analysis: A Manual of Standard Methods for the by Azor Thurston (1922)
"acid value. Is expressed as the number of milligrams of potassium hydroxide neutralized by the free fatty acids in 1 gram of fat, oil or resin. ..."

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