Dimethyl gallate

Annex III lays down the conditions of use for permitted preservatives and antioxidants, with lists of foods and maximum levels in each case. Part A lists the sorbates, benzoates and p-hydroxybenzoates, E 200-E 219 part B lists sulphur dioxide and the sulphites, E 220-E 228 part C lists other preservatives with their uses, including nisin, dimethyl dicarbonate and substances allowed for surface treatment of certain fruits, E 249 potassium nitrite, E 250 sodium nitrite, E 251 sodium nitrate and E 252 potassium nitrate, E 280-E 283 propionic acid and the propionates part D lists the antioxidants E 320 butylated hydroxyanisole (BHA), E 321 butylated hydroxytoluene (BHT), E 310 propyl gallate, E 311 octyl gallate, E 312 dodecyl gallate, E 315 eiythorbic acid and E 316 sodium erythorbate. 

Benzoate, chloro-benzoate, arsenate, dimethyl benzoate, salicylate, hydroxybenzoate, resorcylate, propionate, gallate - [66]... 

Dilute ammonia solution Dilute hydrochloric acid Dilute phosphoric acid Dilute sulfuric acid Dimethyl-P-cyclodextrin Dioctyl phthalate Dipotassium edetate Docusate calcium Docusate potassium Dodecyl gallate... 

HjBpz(Me2pz) = dihydro-(l-pyrazolyl)(3.5-dimethyl-l-pyrazolyl)borate Me2Gapz2 - c ethylbis(i-pyrazolyl)gallate ... 

Solutions Preparation. An amine oxide-based cellulose solvent which was still liquid at room temperature was selected. As described earlier (9), it consisted in a mixture of 22 % N-Methyl morpholine N-oxide (HMNO), 65 % N-N-dimethyl ethanolcimine K-oxide (DMEAO) and 13 4 H O (W/W). 5 nqs of CB llulose to which were added 5 mgs of n-propyi gallate, a cellulose stabilizer (10) were dissolved in lOcc of cellulose solvent at 120 C with stirring. Dissolution took place in 15 minutes, following which the solutions were allowed to cool. They were then stored in a dessicator. 

The synthesis of the anionic ligand dimethyl(AW -dimethylethanolamino)-(l-pyrazolyl)gallate, [MeaGa(OCH2CH2NMe2)(N2C3H3)], Scheme 20 and its... 

Several new complexes of the dimethyl(pyrazolyl)(ethanolamino)gallate ligand (41), itself obtained by the reaction of sodium hydride and the pyrazole with trimethylgallium, followed by addition of the ethanolamine, have been prepared. In all, the ligand functions as a terdentate donor. ... 

Dimethyl sulfate and aq. NaOH added dropwise at room temp, during 3 hrs. to a stirred soln. of 10 g. methyl gallate in aq. 5%-borax soln., allowed to stand overnight, and the crude intermediate heated 1 hr. on a steam bath with aq. 20%-NaOH 7.5 g. 3-O-methylgallic acid. R. R. Scheline, Acta Chem. Scand. 20, 1182 (1966). 

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