Ester number

The ester number (EZ) is used for characterization and analytical-chemical quality control of glycerides ( fats , oils and waxes ). The ester number is one of the fat indicators .

The ester number denotes the mass of potassium hydroxide in milligrams that is required to hydrolyze ( saponify ) the ester bonds of the neutral esters contained in 1 g of fat .

The ester number is calculated using:

Ester number = saponification number (VZ) - acid number (SZ)

Individual evidence

1. ^ Siegfried Ebel and Hermann J. Roth (editors): Lexikon der Pharmazie , Georg Thieme Verlag, 1987, p. 233, ISBN 3-13-672201-9 .
2. ↑ ^{a b} Otto-Albrecht Neumüller (Ed.): Römpps Chemie-Lexikon. Volume 2: Cm-G. 8th revised and expanded edition. Franckh'sche Verlagshandlung, Stuttgart 1981, ISBN 3-440-04512-9 , pp. 1265-1270.
3. ↑ European Pharmacopoeia , Deutscher Apotheker Verlag Stuttgart, 6th edition, 2008, p. 171, ISBN 978-3-7692-3962-1 .

Web links

Wikibooks: Practical course in food chemistry / ester number  - learning and teaching materials

• German standard methods for the investigation of fats, fat products, surfactants and related substances , ISBN 978-3-8047-2684-0