Zinc Diethyldithiocarbamate is a very fast curing, but too scorchy for extensive use as the sole accelerator in dry rubber compounds. It imparts high modulus to unfilled NR vulcanite, fast curing and confers good ageing properties. It gives absolutely non-staining vulcanite, free from odor and taste. A major use of ZDC in dry rubber is as a booster accelerator to speed up the thiaxzoles and sulphenamides based system, giving fast curing yet reasonably safe combinations. Mixtures of ZDC and TMT are valuable as fast curing accelerators for butyl rubber. It is also very useful for transparent rubber formulations.