Fundamental (meaning low pH) Chromium is the most widely utilized in compound leather tanning. It’s a quick method, about a couple of times of soaking are necessary, but requires more steps than vegetable tanning. When the skins are still raw, they’re soaked in chromium (purple-blue color ) and it adds color to them, hence the title of the step:”wet blue”. Though effective in leather tanning, the processing of Chromium and ways we must eliminate it after its job is done, is related to important environmental damages. For all these reasons and because global populations are getting more worried about our world, its prevalence is slowly decreasing. Other manufactured chemicals are utilized like alum, zirconium, titanium, and iron salts, all of which have negative environmental weight. It’s hard, almost impossible, to understand the exact substance where the leather was tanned as there’s not any law that obliges producers to detail this information. The only way is to ask the craftsmen or go where the hides are tanned and see for ourselves. Allergies to such metals also have been recorded in a small portion of the populace in which dermal reactions happened.
Vegetable Tanning (Natural Compounds ):
As opposed to the former method, manufacturers take pride in labeling their products using its making roots as vegetable tanning has largely grown in popularity, with reason. The tanning of leather with vegetable tannins takes a few weeks, forty days to be exact, to finish and it contributes to soft, supple leathers. Additionally, their odor is less notable than artificial compound treated hides and their specific smell even tends to please picky noses. The hides are placed in wooden drums and as the concentration of this chemical used increases in each receiver, the conceal picks up the delicate, warm colors of the tannins. If desirable, the staining agent may also be added in another procedure. Each piece is recognizable due to its specific characteristics as natural tannins can’t be made equal from one lot to another and each skin differs. Leather treated this way also has a strange way of aging, looking better as time goes by. Vegetable tanning has been used for over 200 years. Its ways are passed on into households, from Italy largely, and its methods have been refreshing constantly. To utilize vegetable tanning also means to have a lesser effect on the environment that is another reason it is often a preferred method amongst Eco-friendly consumers.
Interesting and Smelly reality:
Leather has had many applications since humanity’s been around. The methods for making it, however, haven’t always been so refined! Historical tanneries (several years B.C.) used urine, feces, a combination of animal brains, and left skins to putrefy for some period of time to process the hides. They had such a foul odor the profession became famous as the”odoriferous trade”! Those old staying tanneries are still, today, kept isolated from villages as odor persists… Imagine!