AEROSIL® R 972 W Silica

AEROSIL® R 972 W is a fumed silica aftertreated with DDS (Dimethyldichlorosilane). The product thickening efficiency of AEROSIL® R 972 W ex RHE is consistent with the Waterford-produced AEROSIL® R 972 W. This profile is dif- ferent than the thickening profile of standard RHE quality.

Principal: Evonik Corporation Silicas

Functions: Anti-Settling Agent, Rheology Modifier, Rheology Modifier

Chemical Family: Organosilicon

End Uses: Printing Ink, RTV Silicone Sealant, Silicone Sealant, Toner, Varnishes

Compatible Polymers & Resins: Silicone Elastomer

Labeling Claims: Not Listed In California Proposition 65, Odor-free

Features: Corrosion Resistance, Excellent Pigment Stability, Hydrophobic, Improves Flow, Provides Anticaking, Water Resistance

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Enhanced TDS

Identification & Functionality

Features & Benefits

CASE Ingredients Features
Labeling Claims
Materials Features
Product Benefits
  • Hydrophobic component for thickening and reinforcement of RTV-1 K silicone sealants
  • Improves shelf-life of silicone sealants
  • Water resistant, hydrophobising of liquid systems
  • Rheology control of (complex) liquid systems
  • For use in coatings as anti-settling agent, for pigment stablilization and improvement of corrosion protection
  • Improvement and maintenance of free flow and anticaking characteristics of powders

Applications & Uses

Adhesive & Sealant End Applications
Coating End Applications
Compatible Polymers & Resins
Ink & Toner End Applications
Markets
Applications
Product Applications
  • Silicone rubber & sealants
  • Adhesives
  • Cosmetics
  • Plant care
  • Coatings

Properties

Physical Form

Regulatory & Compliance

Packaging & Availability

Product Packaging
  • AEROSIL® R972 W is supplied in multiple layer 10 kg bags.

Storage & Handling

Storage Conditions
  • Our silica products are inert and chemically extremely stable.
  • However, due to their high specific surface area, they can adsorb moisture and volatile organic compounds from the surrounding atmosphere.
  • Products have to be stored in their original packaging (e.g. fully shrink-wrapped) or in sealed containers in a dry place away (or apart) from volatile organic substances.
  • Even if a product is stored in these conditions, it can still pick up ambient moisture after a long time, which can cause it to exceed the stated ex works 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.

Other

Apparent Tamped Density
50.0 g/L
Autoignition Temperature (SDS)
600.0 °C
Carbon Content
0.6-1.2 %(W/W)
Color (SDS)
White
Decomposition Temperature (SDS)
300.0 °C
Density (SDS)
2.2 g/cm³
Explosive Nature (SDS)
Not to be expected in view of structure
Item Number
Loss on Ignition
max. 2.0 %(W/W)
Minimum Ignition Energy (SDS)
min. 10.0 kJ
Moisture Content
max. 0.5 %(W/W)
Odor (SDS)
Odorless
Principal
Shelf Life
24.0 mo
Silicon Content
99.8-100.0 %(W/W)
Solubility In Water (SDS)
min. 1.0 mg/L
Specific Surface Area
90.0-130.0 m²/g
pH
3.6-5.5
pH (SDS)
3.6-5.6
Chemical Properties
ValueUnitsTest Method / Conditions
Loss on Ignitionmax. 2.0 %(W/W)%(W/W)
pH3.6-5.5-in 4% dispersion
Shelf Life & Stability
ValueUnitsTest Method / Conditions
Shelf Life24.0 momo
Physical Properties
ValueUnitsTest Method / Conditions
Apparent Tamped Density50.0 g/Lg/L
Moisture Contentmax. 0.5 %(W/W)%(W/W)
Specific Surface Area90.0-130.0 m²/gm²/gBrunauer-Emmett-Teller (BET)
Material Composition
ValueUnitsTest Method / Conditions
Carbon Content0.6-1.2 %(W/W)%(W/W)
Silicon Content99.8-100.0 %(W/W)%(W/W)based on ignited material, as silicon dioxide
SDS Physical and Chemical Properties
ValueUnitsTest Method / Conditions
Autoignition Temperature (SDS)600.0 °C°CVDI 2263
Decomposition Temperature (SDS)300.0 °C°C
Density (SDS)2.2 g/cm³g/cm³at 20°C
Minimum Ignition Energy (SDS)min. 10.0 kJkJ
Solubility In Water (SDS)min. 1.0 mg/Lmg/L
pH (SDS)3.6-5.6-at 20°C, 40 g/l, 1:1 in suspension