Recent results have suggested thatp,tert.‐octylphenoxynonaethoxyethanol (OPE10) has a high degree of degradability. These results have been confirmed and extended. The loss of response to cobalt thiocyanate under a wide variety of laboratory test conditions demonstrates that OPE10 will readily undergo bacterial attack. Significant loss of foaming and ethylene oxide in laboratory continuous and semicontinuous activated sludge units and septic tank‐percolation field units demonstrate that the degree of degradation under reasonable conditions can be extensive. Tracer studies and oxygen consumption tests are used to support this conclusion. These results indicate that OPE10 should be adequately degraded in conventional sewage disposal systems.

The absorption spectrum of VCl4 vapor from 400 to 23 000 cm—1 was determined. A system of bands with maximum absorption coefficient at 9000 cm—1 is attributed to ligand field splitting of the 2D ground term of the free V (V) ion. The three-component structure of this band is attributed to Jahn-Teller splitting of the excited state. Simple calculations of the expected splitting are offered in support of this assignment.

NotesVol. 67 for many of the compounds in this study, it could not be positively concluded that compounds containing iron, cadmium, or lead as the B' ion, which could not be heated above the 1000-1100°t emperature range, were not ordered even though no ordering lines were visible in their ;X-ray patterns. However, for the purpose of this study compounds Containing cadmium, lead, or iron were indexed on the basis of an ~4 A. cubic perovskite unit cell with the exception of Sr(í'eo.8sNbo.j7)Os which was indexed on a small tetragonal unit cell All other compounds, except Ba(Zno.33Nb0.67)03 and BafXio.asNbo^Oe, gave X-ray patterns similar to that of the ordered perovskite BaCSro.ssTao.eviOs and, therefore, were indexed on the basis of hexagonal unit cells.1 234

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