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Physical Properties
Appearance: grey powder
Melting range: 565 –572°C
(NOCOLOK® Flux)
Solubility in water (20 °C): approx. 4.5 g / l
(NOCOLOK® Flux)
Typical Analysis (Specification)
Silicon powder:
Si min. 98 %
Fe max. 1 %
Other traces max. 1 %
NOCOLOK® Flux:
K 28–31 %
Al 16 –18 %
F 49–53 %
LOH max. 2.5 %
Particle Size Distribution NOCOLOK® Sil Flux (coarse grade)
Silicon powder
Particle size distribution
[µm] [% weight]
10 – 45 >55
Average particle size:17.5 ± 5µm
NOCOLOK® Flux
Particle size distribution
Average particle size:2– 6 µm
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