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Quality Chemicals for the Rubber industry




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Carbon Black / N339

Characteristics

N339 is a fine, active carbon black with increased structure, used for industrial rubber goods. N 339 imparts high modulus, improved extrusion, wear resistance and hysteresis N-330. It is used for tire treads, retreading, industrial rubber goods and conveyor belts.

 

CHEMICAL AND PHYSICAL PROPERTIES OF N339 CARBON BLACK

GRADE

 

ASTM TEST

N-330

Iodine absorption

g/kg

D 1510

90±5

DBP absorption

ml/100g

D 2424

120±5

CTAB surface area

m2/kg

D 3765

93±5

Heating loss

@ 125 °C

D 1509

1.00

Ash content

% max

D 1506

1.00

Sieve residue N 35

% max

D 1514

0.001

Sieve residue N 325

% max

D1514

0.10

Fine Content

% max

D 1508

7

Pour density

kg/m3

D 1513

345±30

Sulphur content

% max

D 1619

1.10

Colour strength

%

D 3265

110±5

DBP absorption after pressing

ml/100g

D 3493

101±5

pH value

 

D 1512

7-10

Toluol extract

%  min

D 1618

75

Pellet hardness

g

D 3303

15-100