Evonik ULTRASIL® VN 2 GR Silica

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Evonik ULTRASIL® VN 2 GR Silica
Categories:	Other Engineering Material; Additive/Filler for Polymer
Material Notes:	ULTRASIL® VN 2 GR as a precipitated silica is used as a reinforcing filler in all kind of rubber applications. Properties and applications: ULTRASIL® VN 2 GR is a mechanically compacted granulate. On account of the granulation process it leads to less dust development during mixing. Due to its lower specific surface area ULTRASIL® VN 2 GR has a slightly lower reinforcing potential compared to ULTRASIL® VN 3. It imparts to rubber compounds high Shore hardness, tensile strength, tear resistance and abrasion resistance and offers advantages concerning compound viscosity and processing. In order to achieve optimum rubber-technical data the addition of activators like glycols, amines or other alkaline accelerators is necessary. Application fields are: Tires, mechanical rubber goods CAS No: 112926-00-8 and 7631-86-9 Information provided by Evonik
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Physical Properties	Original Value	Comments

Density	0.260 g/cc	Poured; ASTM D1513
Particle Size	<= 75 µm	<10% SA Ro-Tap; ISO 5794-1F
	>= 300 µm	>80% SA Ro-Tap; ISO 5794-1F
pH	6.9	5% in water; ISO 787-9
Specific Surface Area	130 m²/g	N2; ISO 9277

Chemical Properties	Original Value	Comments
Ionic Impurities - Fe (Iron)	<= 400 ppm

Component Elements Properties	Original Value	Comments
SiO2	>= 97 %	based on ignited substance (2 h/1000°C); ISO 3262-19

Descriptive Properties
Content	<6 ppm	Mn
	<6 ppm	Cu
Electrical conductivity	<1000 µS/cm	4% in water, ISO 787-14
Loss on drying	0.055	2 hrs at 105°C, ISO 787-2

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PEVONIN019 / 317053

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