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Carbon Black Feed Stock (CBFS)

Carbon Black Feed Stock (CBFS)

CBFS is a dark-colored viscous liquid that is obtained by doing fractional distillation of petroleum fractions at higher temperatures. It is the raw material for manufacture of carbon black, which is used by the tyre industry.

Applications:

A small portion of this product is also used by processors to make various downstream chemicals like Agarbatti Oil, White Oil etc. This is also used for manufacture of Rubber Process Oils. There are two types of CBFS viz. High BMCI type and General type. "BMCI" (Bureau of Mines Co-relation Index) effectively measures the degree yield of Carbon Black. The higher the number, the better the yield of Carbon Black. Sulphur content in CBFS reduces the effect of BMCI value.

CBFS is used to produce Carbon Black, which is used in tyres and road paving, tyre reinforcements, black pigments (e.g. for road markings), and conductors. The stream also contains piperylene, which is used to produce copolymerization elastomers, petroleum resins, curing agents, pesticides, and perfumes.

Carbon Black Feedstock may be used as a source for:
  • Naphthalene - used for phthalic anhydride, insecticides, and concrete plasticizers.
  • Biphenyl - used for food preservatives, heat transfer fluids, and organic syntheses.
  • Fluorine or anthracene - used for light emitting diodes, dyes, and wood preservatives.

Technical Specifications :

Sr.No Characteristics Test Method Test Value Unit
1 Color IS : 1967 P : 12 3.0 – 7.5 ASTM
2 Appearance Visual Dark
3 Density 30°C IS : 1448 P : 16 0.99 Min gm/ml.
4 Flash Point IS : 1992 P : 69 95 Min °C
5 K. Viscosity @ 100°C IS : 1448 P : 25 18 – 20 Cst
6 Pour Point IS : 1448 P : 10 10 Max °C
7 Sulfur Compounds IS : 1448 P : 33 0.5 – 2.5 % by mass
8 Ash IS : 1448 P : 04 0.03 % by mass
9 Gross Calorific Value IS : 1448 P : 06 10,000 Min Cal/g
Sl No Parameter Specification Std.method Typical Analysis
1 Density @ 15°C g/ml 0.9900 Max ASTM D 1298 0.9800
2 Flash Point (PMC),°C 66 Min. ASTM D 93 /IP 34 70
3 Pour Point °C +18 Max. ASTM D 97 / IP 15 -9
4 Gross Calorific Value 10500 Kcal/Kg
5 Ash (% by Mass.) 0.15 Max ASTM D 482 / IP 4 0.04
6 Water content (% by Mass). 1 Max. ASTM D 95 / IP74 <0.05
7 Sulphur, Total (% by Mass) 3.5 Max ASTM D 4294 3.20
8 Sediment (% by Mass) 0.25 Max. ASTM D 473 / IP 53 0.04
9 Vanadium( ppm) 250 UOP 391 /91 170
10 Sodium, ppm) 50 UOP 391 /91 20
11 Viscosity, Kinematic 50°C, cSt 380 Max. ASTM D 445 / IP 71 370
12 Potential Sediment (% by ageing) 0.5

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