Acetylene black Loss on heating: 0.3%max. Ash content: 0.2%max. PH value: 6-8 Grit content: 0.02%max. Apparent specific volume (ml/g): 14-17 Iodine absorption (g/kg): 90-105 Hydrochloric acid absorption number (ml/g): 4.0min. In 50% compressed kraft bag
