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Typical Properties

Chemical and Physical Data
                    Grades Applications Units Sipernat ® 22 Sipernat ®  22 (Wessalon) Sipernat ® 22S Sipernat ®  22S (Wessalon S) Sident ® 22S
Typical values

Appearance

-

Snow white free flowing powder

BET Surface Area (1)

m2/g

175

175

175

175

175

Average agglomerate size (2)

µm

100

100

7

7

7

Tamped Density (3)

g/l

255

255

80

80

90

Moisture (4)(6)            (2hours 105  0C)

%

5

5

5

5

5

Ignition Loss  (5)(7)         (2 hours 1000 0C)

%

5

5

5

5

5

pH (9)

-

6.5

6.5

6.5

6.5

6.5

DBP Absorption (7)(10)

g/100 g

270

270

270

270

270

SiO2  (8)

%

98

98

98

98

98

Na2O (8)

%

1

1

1

1

1

Fe2O3 (8)

%

0.03

0.03

0.03

0.03

0.03

SO3 (8)

%

0.8

0.8

0.8

0.8

0.8

Sieve residue (11)          (acc. Mocker 45 µm)

%

-

-

1

1

0.3
 

1. acc. ISO 5794/1, annex D

2. Sipernat 22 determined by dry sieving, Alpine air jet sieve 

    (Sipernat 22S determined by Coulter Counter)

3. acc. ISO 787/XI (without sieving)

4. acc. ISO 787/II or ASTM D 280

5. acc. ASTM D 1208

6.  when leaving manufacturing plant

7.  based on material dried for 2 hours at 105 0C

8.  based on material ignited for 2 hours at 1000 0C.

9.  acc. ISO 787/IX or ASTM D 1208 (in 5% Silica/water despersion)

10. acc. ASTM D 2414

11. acc. ISO 787/XVIII