by nitrogen adsorption
 氮吸附值
 by iodine adsorption
 碘吸附值

m2/g

mg/g

min.800

950 - 1200

min.800

950 - 1250

 DBF absorption DBF 吸收值                     

ml/100 g

340 - 420

380 - 460

 pH value ; PH值

6，5 - 9，0

6，5 - 9，5

 Loss by drying 干燥失重            

% hm.

max. 0，8

max. 0，8

 Ash content 灰分                         

% hm.

max. 0.9

max. 1，7

 Sulfur content 含硫量            

% hm.

max. 0，5

max. 0，6

 Fines content 粉末含量           

% hm.

max. 15

max. 20

 Electric resistance电阻

Ohm.cm

max. 40

max. 150

 Sieve residue ( 0，045 mm) 筛 余物

ppm.

max. 500

max. 500