The Effect of Temperature, Acid Concentration and Time on the Bromination of Phenol for Quantitative Determinations.

Abstract

Nitrogen Phos. (P2O5) Moisture Oils Description Per cent Per cent Per cent Per cent From Eubanks Tankard Co. Dry scrap (from 6 sacks) 8.93 6.17 6.48 5 .91 From Taft Fish Co. Dry scrap (sample from 525 tons) From Carter's Creek Fish Guano Co. Dry scrap, dried in hot air amd steam driers 8.96 7.75 6.18 39°T HE JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY Vol. 5, No. 5 third distillate at 181-20 C. of Merck's c. p. phenol, 1.56 grams being dissolved and made up to one liter.The 20 per cent KI solution was made by dissolving 200 grams of KI in 800 cc. of distilled water. The solution was not made up fresh each day as is frequently recommended. A liter of the solution required only a few drops of N/10 thiosulfate to reduce the free iodine which was formed in the solution during three weeks. THE EFFECT OF ACID CONCENTRATIONIn each of the following tables the order from left to right is the order in which the solutions were added

Solubility and Equilibrium Data of Phenol-Water-Isoamyl Acetate and Phenol-Water-Methyl Isobutyl Ketone Systems at 30° C.

“…The compositions of the ternary mixtures were obtained with the help of the plots drawn previously connecting refractive index and the composition of ternary saturated mixtures at 30°C. Samples of each layer in equilibrium were also analyzed for phenol concentration by Koppeschar's method (7) as a check on the refractive index method. The equilibrium data (in weight fractions) for the two systems are reported in Tables IV and V and are represented in Figures 1 and 2.…”