ISO 6684:1982
Butadiène à usage industriel — Dosage du tert butyl-catéchol (TBC) ((diméthyl- éthyl-1,1)-4 benzènediol-1,2) — Méthode spectrométrique
Numéro de référence
ISO 6684:1982
ISO 6684:1982
Edition 1
1982-07
1982-07
© ISO 2024
Annulée
Résumé
TBC is added as an oxidation inhibitor to 1,3-butadiene for industrial use. For the determination the inhibitor is separated from the butadiene by evaporation. The residue is dissolved in water and an excess of iron(III) chloride is added. The spectrometric measurement of the absorbance of the yellow-coloured complex is carried out at a wavelength of about 425 nm. The method is applicable to butadiene containing more than 50 mg TBC per kilogram.
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