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BLANCHIMENT HYPOCHLORITE [1 record]
Record 1 - internal organization data 1998-08-12
Record 1, English
Record 1, Subject field(s)
- Pulp Preparation (papermaking)
Record 1, Main entry term, English
- hypochlorite bleaching
1, record 1, English, hypochlorite%20bleaching
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
- hypochlorite bleaching stage 2, record 1, English, hypochlorite%20bleaching%20stage
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
An oxidative bleaching stage often in the third stage of a CEH or CdEH arrangement, where the active component is sodium or calcium hypochlorite in an alkaline medium. The brightening is achieved by destructive oxidation of the lignin, and the continuous presence of the alkali leads to the solution of the reaction products, thus opening deeper layers of lignin in the fibre to further attack. 2, record 1, English, - hypochlorite%20bleaching
Record 1, French
Record 1, Domaine(s)
- Préparation de la pâte à papier
Record 1, Main entry term, French
- blanchiment à l'hypochlorite
1, record 1, French, blanchiment%20%C3%A0%20l%27hypochlorite
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Stade de blanchiment oxydant souvent utilisé en troisième position d'une séquence CEH. L'oxydant utilisé est l'hypochlorite de calcium ou de sodium en milieu alcalin. L'éclaircissement est obtenu par oxydation de la lignine, en présence d'alcalis qui solubilisent les produits de la réaction à mesure qu'ils se forment. De cette façon, la lignine contenue plus profondément dans la fibre peut être attaquée. 1, record 1, French, - blanchiment%20%C3%A0%20l%27hypochlorite
Record number: 1, Textual support number: 1 OBS
L'oxydant peut être soit l'oxygène lui-même, soit un corps oxygéné, Ex. : [...] hypochlorite de sodium (eau de javel), chlorure de sodium (sel), oxygène naissant. 2, record 1, French, - blanchiment%20%C3%A0%20l%27hypochlorite
Record number: 1, Textual support number: 2 OBS
L'observation ci-haut a été tirée du «Cours de formation papetière» de Jean Vilars (code : VIPAP) sous l'article 3.5.1.1. 3, record 1, French, - blanchiment%20%C3%A0%20l%27hypochlorite
Record 1, Spanish
Record 1, Textual support, Spanish
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