Sample

Content of Klason lignin, %

Bulk density, kg/m³

Absolute density by helium, kg/cm³

Functional group content, %

Content of elements, %

OCH₃

OH_acet

OH_phen

OH_alif

C

H

N

S

1

69.6

240

1484

6.9

6.1

2.7

3.4

52.8

4.72

0.43

0.22

2

68.5

360

1493

7.61

8.1

8.1

5.8

49.5

4.45

0.25

0.74

3

74.6

180

1329

11.4

1.3

3.6

3.2

60.9

5.93

1.13

0.34

4

84.6

160

1287

8.6

9.0

1.2

7.8

66.7

4.92

0.15

0.23