Erbium perchlorate

Diazoacetonitrile, 0675 Dimercury dicyanide oxide, 0983 Dimethylketene, 1518 Dysprosium perchlorate, 4131 Erbium perchlorate, 4132 Hexaamminechromium(III) perchlorate, 4129 f Phosphorus, 4874... 

Erbium perchlorate, 4132 Gallium perchlorate, 4135 Iron(III) perchlorate, 4134... 

Epoxypropyloxy)2,2-dinitropropyl azide, 2397 Erbium perchlorate, 4126 f Ethanal, see Acetaldehyde, 0824 f Ethanamine, see Ethylamine, 0938 f Ethane, 0877... 

Dimercury dicyanide oxide, 0979 Dimethylketene, 1515 Dysprosium perchlorate, 4125 Erbium perchlorate, 4126 Hexaammmechromium(III) perchlorate, 4123... 

Several instances of apparently stable solvated metal perchlorates being converted by partial desolvation into explosively unstable materials indicate that this may be a more common potential hazard than has been realised [1]. Neodymium perchlorate tetra-solvated with acetonitrile (obtained by vacuum evaporation of the solution at ambient temperature) had not been found to be thermally- or shock-sensitive, but when vacuum dried at 80°C to the di-solvate, it exploded violently on contact [2]. Erbium perchlorate tetrasolvated with acetonitrile had likewise appeared stable, but when vacuum dried at 150°C to a glassy solid which still contained some solvent, it too exploded when scraped with a spatula [3]. Mercury(II) perchlorate hexa-solvated with DMSO appears stable [4], but when dried to the tetrasolvate, it is impact- and friction-sensitive [5], The fact that the solvating species may also be water suggests that this is not a direct effect of a perchlorate oxidising an organic solvent. Thus,... 

These and related incidents are detailed under f Acetonitrile, Lanthanide perchlorate, 0755 Chromium(III) perchlorate. 6dimethyl sulfoxide, 4124 Cobalt(II) perchlorate hydrates, 4045 Erbium perchlorate, 4126 Gallium perchlorate, 4129 Iron(III) perchlorate, 4056... 

Among seven-coordinate structures, many involve dike-tonate complexes Ln(diket)3 L these generally have either capped-octahedral or capped trigonal prismatic geometry. A considerable number of complexes with neutral donors (e g. thf) of the type LnX3L4 (X = halide, NCS), however, have structures closest to pentagonal bipyramidal, similarly found in the erbium perchlorate complex with 2,6-dimethyl-4-pyrone (Section 3.7.4). 

A number of reference chemicals with well-defined UV spectra have been used for detector wavelength calibration, e.g., uracil, erbium perchlorate, holmium oxide, caffeine, etc. 

Erbium perchlorate, 4132 t Ethanal, see Acetaldehyde, 0828 t Ethanamine, see Ethylamine, 0942 t Ethane, 0881... 

Detector Lamp energy Accuracy of wavelength Measure the actual response factor at the detection limit Read energy values with a diagnostic function and compare with the value of a newly installed lamp Using solutes with sharp maximum of the extinction coefficient, e.g. terbium perchlorate 218.5 nm, erbium perchlorate 254.6 nm ... 

You can check whether the displayed wavelength is correct with the aid of filters. Some manufacturers build these into their instrument. You can also use a test compound, such as erbium perchlorate, which exhibits a sharp maximum at a defined wavelength with = 255.5 nm. 

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