KETJENBLACK EC-300J Conductive Carbon Black

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25 gram: 36 €
100 gram: 71 
500 gram: 250 
1000 gram: 368 

Ketjen Black EC-300J Conductive Carbon Black 

KETJENBLACK is a unique electro-conductive carbon black that has received favorable evaluations for its superior performance and stability of quality. Mixed with plastic, rubber or other materials, KETJENBLACK has garnered high marks for providing the same level of electro-conductivity with a lower loading quantity as conventional carbon black.



310-345 ml/100g




≤ 30 mg/kg


≤ 1.0 


≤ 0.05 %


740-840 mg/g

FINE (wt %)

≤ 7 


125-145 kg/m3


≤ 0.5 


Black free-flowing pellets


Applications of Ketjenblack

Ketjenblack EC-300J is a very pure carbon black extremely suitable for antistatic and electroconductive applications. Due to its unique morphology and the very high surface area of approx. 800 m2 /g (BET), only one third the amount of Ketjenblack EC-300J is needed compared to conventional electroconductive blacks in order to achieve the same conductivity. The lower loading of Ketjenblack EC-300J allows easier processing for those polymers sensitive to filler addition, thus minimizing loss in mechanical and rheological properties. Ketjenblack EC-300J when thoroughly dispersed with the polymer significantly increases the conductivity of the resulting compound.

Ketjenblack EC-300J can be used in all types of polymers, thermoset, thermoplastic as well as elastomers. Due to its unique morphology and structure with relative low amounts of Ketjenblack EC-300J excellent conductive material can be made. The low grit content results in very smooth surfaces during extrusion. The loading needed to obtain a certain conductivity can vary significantly per type of polymer. More detailed information is provided in our special Ketjenblack EC Technical Bulletin.

Ketjenblack EC-300J has a very low ash content, which makes it the preferred material for semicon applications in cable shielding. Ketjenblack EC-300J can also be used to produce conductive coatings and primers. Also here already at very low loading levels optimal electroconductive performance is obtained minimizing loss in mechanical and rheological properties. Some other applications are batteries, packaging for IC parts, tubing, flooring, carpet backing, automotive parts, cell phones and many more. 

Ketjenblack Features

(1) Same level of electro-conductivity as conventional carbon black but with 1/2 to 1/3 of the loading quantity

(2) Effective at a lower loading quantity, has minimal effect on the physical properties of base resins or paint

(3) Minimal reduction in electro-conductivity when mixed with other materials

Electro-Conductive Mechanism

Image of KETJENBLACK's primary particle

KETJENBLACK's pore structure allows it to perform in a manner that is superior to that of other types of carbon black.

Transmission electron microscopic images of KETJENBLACK EC



Nanografi recommends to store Ketjenblack EC-300J in a dry well ventilated place away from direct sunlight. The packaging can be damaged if exposed to direct sunlight for more than 30 minutes.



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