Wacker HDK® N20 Nutrition Silica

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Wacker HDK® N20 Nutrition Silica
Categories:	Ceramic; Oxide; Silicon Oxide; Other Engineering Material; Additive/Filler for Polymer
Material Notes:	Synthetic, hydrophilic amorphous silica, produced via flame hydrolysis. Special features: White colloidal powder of high purity. Application: HDK® N20 NUTRITION shows the same product characteristics like HDK® N20, but in addition to the specified parameters of HDK® N20, the specification relevant for uses as Food and Feed Additive under E 551 according to Regulation (EU) 231/2012 are met. (Production according to ISO 9001, ISO 14001 and HACCP). Information provided by Wacker Chemie AG.
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Physical Properties	Original Value	Comments

Bulk Density	0.0400 g/cc	tamped; DIN EN ISO 787-11
Density	2.20 g/cc	DIN 51757
pH	3.8 - 4.3	4% dispersion; DIN EN ISO 787-9
Specific Surface Area	175 - 225 m²/g	Hydrophobic Silica
Evaporation Loss	<= 2.5 % @Temperature 105 °C, Time 7200 sec	DIN EN ISO 787-2

Component Elements Properties	Original Value	Comments
SiO2	>= 99.8 %	based on the substance heated at 1000°C for 2 h; DIN EN ISO 3262-19

Descriptive Properties
Content	<1 ppm	Mercury
	<3 ppm	Arsenic
	<5 ppm	Lead
Sieve residue	<0.03%	acc to Mocker >40 µm, DIN EN ISO 787-18

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