Wacker HDK® H13L Silica

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Wacker HDK® H13L Silica
Categories:	Ceramic; Oxide; Silicon Oxide; Other Engineering Material; Additive/Filler for Polymer
Material Notes:	Synthetic, hydrophobic, amorphous silica, produced via flame hydrolysis. Special features: White colloidal powder of high purity. Application: HDK® H13L is applied as a thickening, thixotropic and antisedimentation agent in coatings, printing inks, adhesives and others. It is mainly used in polar systems. Due to its strong hydrophobicity HDK® H13L is well suited for solvent free systems, for high solids and for waterborne coatings. Information provided by Wacker Chemie AG.
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Physical Properties	Original Value	Comments

Bulk Density	0.0500 - 0.0850 g/cc	tamped; DIN EN ISO 787-11
Density	2.20 g/cc	DIN 51757
pH	3.8 - 4.8	4% dispersion; DIN EN ISO 787-9
Specific Surface Area	100 m²/g	Hydrophobic Silica
	110 - 140 m²/g	Hydrophobic Silica
Evaporation Loss	<= 0.060 % @Temperature 105 °C, Time 7200 sec	DIN EN ISO 787-2

Component Elements Properties	Original Value	Comments
Carbon, C	0.60 - 2.2 %	DIN ISO 10694
SiO2	>= 99.8 %	based on the substance heated at 1000°C for 2 h; DIN EN ISO 3262-19

Descriptive Properties
Content (%)	50	Residual silanol
Sieve residue	<0.05%	acc to Mocker >40 µm, DIN EN ISO 787-18

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