Evonik - ULTRASIL VN 3 - Reinforcement - Silica

Enhanced TDS

Chemical Family: Silica
Chemical Name: Silica gel, pptd., cryst.-free
Plastics & Elastomers Functions: Reinforcement
Technologies: Elastomers
Product Families: Elastomers — Elastomer Additives
Fillers & Extenders
Chemical Description: SiO₂, synthetically produced amorphous silicon dioxide.

Labeling Claims: Not Listed In California Proposition 65
Materials Features: Excellent Transparency Properties,
Good Abrasion Resistance,
Good Processability,
High Dispersibility,
High Hardness,
High Tensile Strength,
Tear Resistance

Markets: Consumer Goods,
Industrial
Applications: Industrial — Chemical & Industrial Manufacturing
Equipment & Parts
Consumer Goods — Footwear
Product Applications: With its high reinforcing potential ULTRASILVN 3 imparts to rubber compounds particularly high Shore hardness, tensile strength, tear resistance and abrasion resistance. In order to achieve optimum rubber-technical data the addition of activators like glycols, amines or other alkaline accelerators is necessary. On account of the higher surface area ULTRASIL* VN 3 can provide vulcanizates of excellent transparency.
ULTRASIL® VN 3 as a precipitated silica is used as a reinforcing filler in all kind of rubber applications.

Physical Form

Powder

Appearance

White powder

Physico-Chemical Properties


	Value	Units	Test Method / Conditions
Manganese Content¹	max. 6	ppm	Internal Method
Copper Content¹	max. 6	ppm	Internal Method
Iron Content¹	max. 600	ppm	Internal Method
SiO₂ Content²	min. 97	%	ISO 3262-19
Electrical Conductivity (4% in water)	max. 1300	µS/cm	ISO 787-14
Sieve Residue (Alpine 180 µm)	30	%	ISO 8130-1
Sieve Residue (Mocker 45 µm)	85	%	ISO 787-18
Tamped Density	270	g/l	ISO 787-11
pH Value (5 % in water)	6.2	-	ISO 787-9
Loss on Drying (2h at 105°C)	5.5	%	ISO 787-2
Specific Surface Area (N₂, Multipoint)	180	m²/g	ISO 9277

Note

1) based on original substance
2) based on ignited substance (2 h/1000°C)
*) The given data are typical values. Specifications on request.

Certifications & Compliance: REACH (Europe)
Chemical Inventories: AICS (Australia),
DSL (Canada),
EINECS (EU),
ENCS (Japan),
IECSC (China),
KECI (Korea),
NZIoC (New Zealand),
PICCS (Phillipines),
TSCA (USA)

Packaging Information: Our silica products are inert and extremely stable chemically. However, due to their high specific surface area, they can absorb moisture and volatile organic compounds from the surrounding atmosphere. Therefore, we recommend storing the products in sealed containers in a dry, cool place, and removed from volatile organic substances. Even if a product is stored under these conditions, after a longer period it can still pick up ambient moisture over time, which could lead to its exceeding the specified moisture content. For this reason, our recommended use-by date is 24 months after date of manufacture. Product more than 24 months old should be tested for moisture content before use in order to make certain that it is still suitable for the intended application.