No abstract

No abstract

No abstract

No abstract

limit; while the other phase (ß) is present alone wherever this limit is exceeded. They also make plain the migration of the phase boundary with continued diffusion. Finally they show that the higher order diffraction lines from the ß phase are much less intense than those of the a phase, a fact probably due to the severe cold working which occurs as ß is formed from a by a sudden expansion of over 3% (linear) at the advancing phase boundary.

No abstract

No abstract

reading obtained, when plotted against the standard curve, gives the per cent purity of the p-aminobenzoic acid.Procedure II. Sodium p-aminobenzoate may be assayed in a similar manner, except that the diluent used is distilled water and spectrophotometric determinations are made at wave length 266 mp.