acetous

Everything should be perfectly sweet and clean, and a strict supervision kept up, that the laborers do not drop any crumbs of bread, &c., among the grapes, as this will immediately cause acetous fermentation.

From The Cultivation of The Native Grape, and Manufacture of American Wines by George Husmann

The ancient chemists knew hardly any of the salts formed by the combinations of acetous acid with the salifiable bases, except the acetites of potash, soda, ammoniac, copper, and lead.

From Elements of Chemistry, In a New Systematic Order, Containing all the Modern Discoveries by Antoine Lavoisier

The acetous acid has no action upon tin.

From The Art of Making Whiskey So As to Obtain a Better, Purer, Cheaper and Greater Quantity of Spirit, From a Given Quantity of Grain by C. M.

As many of the preceding observations relate to the vinous and putrefactive fermentations, I had the curiosity to endeavour to ascertain in what manner the air would be affected by the acetous fermentation.

From Experiments and Observations on Different Kinds of Air by Joseph Priestley

From this circumstance, Mr Hermbstadt calls it imperfect vinegar; but it differs likewise from acetous acid, by having rather more charcoal, and less hydrogen, in the composition of its radical.

From Elements of Chemistry, In a New Systematic Order, Containing all the Modern Discoveries by Antoine Lavoisier