Synonyms | Propylene glycol esters of fatty acids |
Definition | Consists of mixtures of propane-1,2-diol mono- and diesters of fatty acids occurring in food fats and oils. The alcohol moiety is exclusively propane-1,2-diol together with dimer and traces of trimer. Organic acids other than food fatty acids are absent |
Assay | Content of total fatty acid ester not less than 85 % |
Description | Clear liquids or waxy white flakes, beads or solids having a bland odour |
Identification | |
A.Positive tests for propylene glycol and for fatty acids | |
Purity | |
Sulphated ash | Not more than 0,5 % determined at 800 ± 25 oC |
Acids other than fatty acids | Not detectable |
Free fatty acids | Not more than 6 % estimated as oleic acid |
Total propane-1,2-diol | Not less than 11 % and not more than 31 % |
Free propane-1,2-diol | Not more than 5 % |
Dimer and trimer of propylene glycol | Not more than 0,5 % |
Arsenic | Not more than 3 mg/kg |
Lead | Not more than 5 mg/kg |
Mercury | Not more than 1 mg/kg |
Cadmium | Not more than 1 mg/kg |
Heavy metals (as Pb) | Not more than 10 mg/kg |