Evonik - ULTRASIL 880 - Reinforcement - Silica

Enhanced TDS

Chemical Family: Silica
Chemical Name: Silicic acid, calcium salt
Plastics & Elastomers Functions: Reinforcement
Technologies: Elastomers
Product Families: Elastomers — Elastomer Additives
Fillers & Extenders
Chemical Description: SiO₂/CaO, synthetically produced amorphous silicon dioxide/calcium silicate.

Labeling Claims: Not Listed In California Proposition 65
Materials Features: Good Compression Set,
Good Extrusion Properties,
Good Processability,
Low Die Swell,
Smooth Surface Finish

Markets: Industrial
Applications: Industrial — Chemical & Industrial Manufacturing
Equipment & Parts
Product Applications: ULTRASIL® 880 has medium reinforcing potential. It imparts excellent compression set and extrusion properties to rubber compounds. ULTRASIL® 880 thus allows the production of profiles with low die swell and very smooth surfaces. Even EPDM compounds with extremely high filler loading can still easily be processed. In white compounds ULTRASIL® 880 can be used as a partial replacement for titanium dioxide. Sulfur cure is only marginally affected. Application fields are: Mechanical rubber goods.

Physical Form

Powder

Appearance

White powder

Physico-Chemical Properties


	Value	Units	Test Method / Conditions
Sodium Content	2	%	Internal Method
Chlorine Content	1	%	Internal Method
Iron Content¹	max. 400	ppm	Internal Method
Calcium Content	6.5	%	Internal Method
SiO₂ Content²	min. 87	%	ISO 3262-19
Loss on Ignition (2 hat 1000°C)	max. 10.5	%	ISO 3262-1
Sieve Residue (Mocker 45 µm)	max. 0.15	%	ISO 787-18
Tamped Density	260	g/l	ISO 787-11
pH Value (5 % in water)	10.5	-	ISO 787-9
Loss on Drying (2h at 105°C)	5.5	%	ISO 787-2
Specific Surface Area (N₂, Multipoint)	35	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.