[article]
| Titre : |
Pratical evaluation of ethylenediaminetetra-acetic acid for controlling iron stains on vegetable tanned leather |
| Type de document : |
texte imprimé |
| Auteurs : |
Timothy D. Stilwell, Auteur ; Mark W. Armstrong, Auteur ; Jean J. Tancous, Auteur ; L. Shepley Hermann, Auteur ; W. Buehrig, Auteur |
| Année de publication : |
2001 |
| Article en page(s) : |
p. 481-490 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
Tanners of vegetable tanned leather have observed that when iron contacts moist or wet leather it causes gray to black stains. For years, the chelating agent, ethylenediaminetetraacetic acid (EDTA), has been added to dry tannin extracts and to tanning liquors to prevent iron stains. This study was conducted to find out how much iron is present in tannins and in tan liquors and to find out how much iron, in the absence of EDTA, would be needed to cause iron stains. Analytical analyses and color determinations, using sheepskin skivers and colorimetry, showed that EDTA, an expensive chemical, did not need to be added during tanning and retanning of vegetable tanned leather. |
| En ligne : |
https://drive.google.com/file/d/1Zchpl1gke9tqq6d_aIsFmVsiVU6Zxp7U/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4347 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. XCVI, N° 12 (12/2001) . - p. 481-490
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Pratical evaluation of ethylenediaminetetra-acetic acid for controlling iron stains on vegetable tanned leather in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. XCVI, N° 12 (12/2001)
