Carbon Black

Definition - What does Carbon Black mean?

Carbon black is an elemental pure carbon in the form of carbon powdered colloidal particles which are obtained whenever an incomplete combustion of any hydrocarbon takes places in controlled operating conditions. The CAS number for Carbon Black is 1333-86-4. It appears to be a black powder and is used in manufacturing of tire, printer cartridges, coatings and rubber & plastic products.

Petropedia explains Carbon Black

In refineries, thick carbon black oil is produced and is considered to be low quality oil which is useful as feedstock for tire manufacturing industries, asphalt and coal tar manufacturing processes, printing & ink manufacturing industry. It is co-product released by steam cracking of naphtha, gas condensates, gas oil and few other petroleum products under very high temperatures. This produces olefins ethylene and propylenes. The carbon black oil usually consists of higher carbon chains even greater than C14 and unsaturated hydrocarbons. Because of this, the oil is very thick, black, heavy, consists of high amounts of sulfur, wax, ash, etc., and is considered to be a low grade & low yield product for a refinery.

Some of the properties of Carbon Black Oil are:

  • Density at 15 degree C - 1070 min
  • Viscosity at 50 degree C – 500 max
  • Flash Point in degree C – 1070 min
  • Sulfur % - 0.5 max
  • Ash % - 0.05 max
  • Sieve retaining (mg/kg) – 10 max
  • Sodium (mg/kg) – 10 max
  • Potassium (mg/kg) – 1 max
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