COAGULATION STUDIES OF THE LATEX OF CRYPTOSTEGIA GRANDIFLORA, R. BR.-A WAR TIME SOURCE OF VEGETABLE RUBBER. PART I

Studies on the coagulation of the latex of Cryptostegia grandiflora have been made with special reference to the hydrogen-ion concentration and the resent paper embodies the results of auto-coagulation, auto-creaming, coagulation by heat, centrifuging, electric current, and water and those obtained by the action of chemical reagents on latex, c g. mineral and organic acids, alkalis, bases, salts, reagents for coagulating proteins, hydration, dehydration and miscellaneous reagents like f-rmaldehyde, lemon juice, curd and molasses. The observations show that rubber could be separated from the latex by the methods which are chemical as well as physical in nature.