Peter P. von Weymarn

Peter Petrovich von Weymarn (commonly mis-spelt von Weimarn) (July 18, 1879 – June 2, 1935) was a Baltic German chemist born in St. Petersburg known for his groundwork in colloid science.

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In 1906 he stated the von Weymarn law: Colloidal dispersions are obtained from very dilute or very concentrated solutions but not from intermediate solutions. The relative supersaturation ratio herein is defined by S=(Q-L)/L (where Q is the amount of the dissolved material and L is its solubility).

Bibliography

• von Weimarn, P P: "Der kolloide Zustand als allgemeine Eigenschaft der Materie (I-III)", Russ. Phys. Chem. Gesellschaft, 1906
• von Weimarn, P P: "Die Allgemeinheit des Kolloidzustandes", Dresden 1925