In the manufacture of one-bath chrome-tanned leather, a basic salt of chromium sulphate is the usual tanning agent. In the tanning process this salt is decomposed by the hide substance with …

increased use of acids, particularly sulfuric acid as well as environmental pollutants (e.g., nitrogen dioxide and sulfur dioxide) are responsible for the rapid deterioration of acid-deteriorated leather.

Aug 15, 2002 · Acid hydrolysis of pickled pelts can be prevented by proper adjustment of the pickle liquor. Pelts destined for long term storage: a fresh pickle liquor should contain between …

Aug 21, 2023 · One common acid is sulfuric acid, which helps remove hair, fat, and flesh from the hide. This acid also acts as an antiseptic, preventing the growth of bacteria that could degrade …

sulphuric acid than chestnut tanned leather. II. Methods and results. III. Summary. loss in strength, in the presence of sulphuric acid. The resistance of leather to deterioration has also …

Considering the adsorption as the sum of two effects (1) the effect of the chemicai reaction of the sulphuric acid with the leather, and (2) the effect of the difference in concentration of sulphuric …

Experiments involving both chrome- and vegetable-tanned calfskins indicate that rapid destruction of the chrome-tanned leather may be expected if the percentage (by weight of leather) of …

Nov 1, 1997 · After 1850, however, liquid sulfuric acid, a more active mineral acid, was used and it removed all of the calcium salts. Use of sulfuric acid produced the more uniform finish desired …

May 5, 2023 · The gaseous environment pollutants, particularly sulfur dioxide (SO 2) and nitrogen dioxide (NO 2), are considered responsible for the acid deterioration of leather artifacts. Visible …

Conventional chroming process generally involves in pickling, chroming and basifying, and there are several defects existing in the process[1,2]: (1)8-10% salt and 1.0-1.2% sulfuric acid were …