VULCAN® 3 carbon black is a reinforcing carbon black conforming to ASTM N330 target values. It is the middle product of three ASTM N300 series carbon blacks with an Iodine number of 82 and OAN value of 102. VULCAN 3 carbon black structure is lower than ASTM N339, N375, N347 and N351, but higher than ASTM N326 carbon black. The product has STSA surface area that is lower than ASTM N339 and N375, but higher than N351 and similar to N326 carbon black.