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A modern electric tanning drum in Germany. Chromium(III) sulfate ([Cr(H 2 O) 6] 2 (SO 4) 3) has long been regarded as the most efficient and effective tanning agent. [12] [13] Chromium(III) compounds of the sort used in tanning are significantly less toxic than hexavalent chromium, although the latter
Chromium(III) sulfate usually refers to the inorganic compounds with the formula Cr 2 (SO 4) 3. x(H 2 O), where x can range from 0 to 18. Additionally, ill-defined but commercially important "basic chromium sulfates" are known. These salts are usually either violet or green solids that are soluble in water. It is commonly used in tanning leather.
Chrome alum or Chromium(III) potassium sulfate is the potassium double sulfate of chromium. Its chemical formula is KCr(SO 4) 2 and it is commonly found in its dodecahydrate form as KCr(SO 4) 2 ·12(H 2 O). It is used in leather tanning. [1]
Chrome-tanned leather is tanned using chromium sulfate and other chromium salts. It is also known as "wet blue" for the pale blue color of the undyed leather. The chrome tanning method usually takes approximately one day to complete, making it best suited for large-scale industrial use. This is the most common method in modern use.
Chromium(III) salts, especially chrome alum and chromium(III) sulfate, are used in the tanning of leather. The chromium(III) stabilizes the leather by cross linking the collagen fibers. [81] Chromium tanned leather can contain 4–5% of chromium, which is tightly bound to the proteins. [43] Although the form of chromium used for tanning is not ...
Sheinbaum Yoselevitz co-founded the company Sintacrom de México, S.A. de C.V., with two other engineers. It was the first company in the country to produce basic chromium sulfate, a key substance for the tanning process. The company later expanded into the production of other chemicals.
Photo: Getty Spray tans contain anywhere between 1 and 15 percent DHA -- a color additive that when inhaled or exposed to the eye nose and lip areas can cause severe headaches, nausea and dizziness.
2 O, a dark violet crystalline double sulfate of chromium and potassium, was used in tanning. In general, alums are formed more easily when the alkali metal atom is larger. This rule was first stated by Locke in 1902, [ 34 ] who found that if a trivalent metal does not form a caesium alum, it neither will form an alum with any other alkali ...
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