High ammonia and low ammonia preserved centrifuged latices were stored for a period of 18 months. Effect of storage on properties of the latices and vulcanizates prepared therefrom was investigated. Mechanical stability time, zinc oxide viscosity, potassium hydroxide number and volatile fatty acid number were found to be affected by storage. Physical properties of vulcanizates were more or less unaffected by storage of latices .up to six months, but beyond this period, decrease in properties was observed. Ageing resistance of the vulcanizates was also found to be affected by the storage period of latices.
Natural rubber latex, Mechanical stability time, Zinc oxide viscosity, Potassium hydroxide number, Volatile fatty acid number, Latex vulcanizate, Ageing