Determination of the chloride of the monoethyl ester of adipic acid

1970 ◽  
Vol 4 (2) ◽  
pp. 104-106
Author(s):  
I. A. Solunina ◽  
V. V. Parfenova ◽  
V. A. Devyatnin ◽  
T. N. Kuznetsova
Keyword(s):  
Adipic Acid

Determination of polyadipates migrating from lid gaskets of glass jars. Hydrolysis to adipic acid and measurement by LC–MS/MS

2010 ◽  
Vol 27 (10) ◽  
pp. 1487-1495 ◽  
Author(s):  
M. Driffield ◽  
E.L. Bradley ◽  
N. Harmer ◽  
L. Castle ◽  
S. Klump ◽  
...  
Keyword(s):  
Adipic Acid

Direct Determination of Adipic Acid in Urine by Extractive Alkylation

1985 ◽  
Vol 23 (9) ◽  
pp. 407-410 ◽  
Author(s):  
N. A. Adinolfe ◽  
M. K. L. Bicking
Keyword(s):  
Adipic Acid ◽  
Direct Determination

Gas-Liquid Chromatographic Determination of Adipate Content of Acetylated Di-starch Adipate

1982 ◽  
Vol 65 (2) ◽  
pp. 238-240
Author(s):  
Gordon A Mitchell ◽  
Michel J Vanderbist ◽  
Florent F Meert
Keyword(s):  
Ethyl Acetate ◽  
Adipic Acid ◽  
Silicone Oil ◽  
Internal Standard ◽  
Active Phase ◽  
Chromatographic Determination ◽  
Silyl Derivative ◽  
Alkaline Conditions ◽  
Liquid Chromatographic

Abstract A gas-liquid chromatographic method is described for rapid, quantitative determination of adipate content of acetylated di-starch adipate. The adipate group is very labile and, under mild alkaline conditions at ambient temperature, is easily hydrolyzed from the starch. Free adipic acid is formed by acidification of the solution with HC1, and then extracted with ethyl acetate. Ethyl acetate is removed under vacuum distillation, and a silyl derivative of the adipic acid is formed. Glutaric acid internal standard is introduced into the original starch sample before hydrolysis. An aliquot of the silylated solution is injected into a gas chromatograph fitted with a column having silicone oil as the active phase. A flame ionization detector is also incorporated. Results correlate well with the amount of adipylating reagent used. No adipic acid is detectable when a hydrolyzed, extracted sample of acetylated di-starch adipate is subjected to a second extraction. Recovery levels of adipic acid, from starches fortified with 100-500 ppm, are in the range of 97-102.5.%

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