Free Sulfur

Name:
Free Sulfur
Detailed information:
Sulfur that is left chemically uncombined after vulcanization of a rubber compound. When this exceeds 1%, the upper limit of solubility of sulfur in rubber, blooming will occur. Most rubber products are vulcanized with as low a sulfur content as possible so that the free sulfur content of the product is seldom over 0.5%.See Bloom; Vulcanization.