Reference number
ISO 6684:1982
ISO 6684:1982
Butadiene for industrial use — Determination of tert-butyl-catechol (TBC) (4- (1,1-dimethyl- ethyl)-1,2 benzenediol) — Spectrometric method
Edition 1
1982-07
Retirada
ISO 6684:1982
13115
Retirada (Edición 1, 1982)

Resumen

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.

Informaciones generales

  •  : Retirada
     : 1982-07
    : Retirada de la Norma Internacional [95.99]
  •  : 1
     : 3
  • ISO/TC 47
    71.080.10 
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