August, 1982 SHORT PAPERS 957 Spectrophotometric Determination of Magnesium with Beryllon II Zhu Ying-quan and Zhang Lin P.O. Box 82, Chengdu, China and Li Jun-yi Department of Chemistry, Huazhong Normal College, Wuhan, China Keywords : Magnesium determination ; beryllon IT ; spec f r o photometry ; aluminium alloys Beryllon I1 [3-(8-hydroxy-3,6-disulpho-l-naphthylazo)chromotropic acid] is produced by condensation of diazotised H-acid (l-aminonaphth-8-ol-3,6-disulphonic acid) with chromo- tropic acid.l It has been applied as a spectrophotometric reagent for b e r y l l i ~ m , ~ - ~ but has no...
