Identity and instability of the beryllium sulfosalicylate complex

The spectrophotometric properties of t he Leryllium-sulfosalicylate complex are described. It is shown that sulfosalicylic acid from commerical sources is either 5-sulfosalicylic acid, or, a t least for t he purposes of complex formation with beryllium, the behavior is the same as that of 5-sulfosalicylic acid

Annotated bibliography of diaminoethanedionedioxime

In the following annotated bibliography on diaminoethanedionedioxime, the references are listed in chronological order, and are numbered consecutively

Some properties of sulfoacetic acid and 3-sulfopropionic acid and their use as analytical masking agents

The values of Ka2 for sulfoacetic and 3-sulfopropionic acids were determined potentiometrically. The values are (8.6 ± 0.3) x 10-5 and (3.0 ± 0.1) x10-5, respectively. These values or Ka2 were much lower than those predicted by the Branch and Calvin equation for the calculation of values or pKa of derivatives of acetic acid

Annotated bilbiography of alpha, beta, gamma, delta-tetraphenylporphine

This annotated bibliography on alpha, beta, gamma, delta-tetraphenylporphine has been prepared as a reference for analytiical research. The authors hope that this bibliography will be of service to those engaged in research and development work and that further work on the analytical applications of this interesting reagent may be encouraged by the availability of this reference.

Ames Laboratory analytical procedures for determination of impurities in calcium metal

Analytical procedures for the determination of aluminum, chromium, iron, manganese, nickel, nitrogen and silicon in calcium metal are discussed

Spectrophotometric determination of zinc and other metals with α, β, γ, δ-tetraphenylporphine

Analytical procedures for the determination of trace amounts of zinc in various metals were developed utilizing the spectrophotometric properties of the zinc complex of α, β, γ, δ-tetraphenylporphine in glacial acetic acid

Spectrophotometric determination of thorium with the trisodium salt of 2-(2-hydroxy-3,6-disulfo-1-naphthylazo)-benzenearsonic acid and some properties of complexes involved

The sodium salt of 2-(2-hydroxy-3 3 6-disulfo-1- naphthylazo)-benzenearsonic acid, hereinafter referred to as thorin, has been extensively employed as a reagent for the spectrophotometric determination of thorium in recent years. No studies of the nature of the reaction between thorin and thorium have been reported. In this work, an examination of some properties of the complexes involved has been initiated

Preparation, properties, and analytical applications of some substituted alicyclic vic-dioximes

The application of organic analytical reagents to the determination of metallic ions has progressed rapidly in the last few decades. Many of these organic compounds have proved to be selective in their action and thereby make possible the determination of one or two ions in the presence of several others

Annotated bibliography of α-furildioxime

This annotated bibliography of the preparation and use of alpha-furildioxime has been prepared as a reference for analytical research. The authors of this bibliography hope that it will be of service to those engaged in analytical research and that further work on the uses of the vic-dioximes in analytical chemistry may be stimulated by the availability of this reference

Annotated bibliography of 2-(2-hydroxy-3,6-disulfo-1-naphthylazo)-benzenearsonic acid

In the following annotated bibliography on 2-(2-hydroxy- 3,6-disulfo-1-naphthylazo)-benzenearsonic acid, the references are listed in chronological order, and are numbered consecutively