Köstrosol® 1540

1 of 11 products in this brand
Köstrosol® 1540 is an opalescent aqueous dispersion of amorphous silicon dioxide nanoparticles. This middle-size colloidal silica has a negatively charged surface (anionic) which is stabilized by Alkaline (Na+). Köstrosol® 1540 is a pure colloidal silica without any organic additives.

Chemical Name: Calcium Metasilicate, Silicic Dioxide, Hydrous

Functions: Anti-Abrasion Agent, Binder & Resin, Electrolyte, Filler, Flattener

CAS Number: 7631-86-9, 13983-17-0

Chemical Family: Silica

Compatible Substrates & Surfaces: Ceramic, Concrete, Marble, Metal, Paper, Wood

Technical Data Sheet
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Identification & Functionality

Chemical Family
Industrial Additives Functions
Chemical Marking
Aqueous, colloidal silica dispersion
Chemical Formula
SiO2 x H2O
CAS No.
7631-86-9
Reach
01-2119379499-16-0065
EC No.
231-545-4

Features & Benefits

Applications & Uses

Compatible Substrates & Surfaces
Battery Type
Industrial Additives End Use
Application

REFRACTORY & CERAMIC INDUSTRY

  • Refractory Materials: Linings for high-temperature furnaces, manufacture of refractory fiber bonding (RFB).
  • Stoneware & Porcelain materials: Dispersants, fluidizing agents & firing aid in the production of porcelain and stoneware.
  • Vacuum forming products: Manufacture of vacuum molded segments and boards with ceramic fibers.

ELECTRICITY STORAGE & ELECTROMOBILITY

 

  • Gel & AGM Accumulators: Generation of solid electrolytes for leak-proof, acid-based systems e.g. in valve-regulated, lead-acid batteries (VRLA) and for the reducing of the acid  stratification in absorbed glass mat batteries systems (AGM).
  • FIRE PROTECTION APPLICATIONS

  • Fire protection glass:For the generation of a water-storing, transparent gel embedded between glass panels.

PAINTS, VARNISHES & PIGMENTS

  • Adhesion and scratch resistance: As an additive to paint formulations for increasing the scratch and abrasion resistance and the breaking strength for various substrates such paper, metal, wood.
  • Filler & Matting Agent: As a functional additive for influencing the color reflection.
  • Heat- and corrosion protection: Heat-resistant paint systems and areas exposed to weather conditions such as moisture and salty atmospheres.
  • Paints based on organic solvents: Binder in organic paint systems.
  • Silicate paints for facades & interior areas: Water- & dirt-repellent color formulations, silicate paints & siliceous products.
  • Waterborne Varnishes & Paints: Improve the penetration and wetting of e.g. wood and subsequent increase in scratch resistance.

FOUNDRY- & INVESTMENT CASTING INDUSTRY

  • Embedding compounds: Binder & filling material, mixing liquid for embedding compositions.
  • Precision Investment Casting: Wax casting or shaw process, application for highly complex castings in automotive, engine & aircraft construction as well as medical fields such as implants & instruments.

Properties

Physical Form
Appearance
Opalescent liquid
Typical Properties
ValueUnitsTest Method / Conditions
StabilizationNa+; negatively charged surface
Specific Surface Area194m2/g
Residue40% (w/w)
Silicon dioxide Content38.8% (w/w)
Density at 20°C1.292g/cm3
Free Alkalinity as Sodium oxide0.37% (w/w)
pH value at 25°C9.7
Viscosity η at 25 °C; γ = 50/s15mPa s

Regulatory & Compliance

Certificates

CWK is certified according to ISO 9001, ISO 14001 and ISO 50001.

Safety & Health

Health And Safety
  • No dangerous goods
  • No hazardous material as defined by the transport regulations.

Packaging & Availability

Packaging Type
Packaging

Following standard packaging is available:

  • Road Tanker: ~ 24 mt
  • Intermediate Bulk Container (IBC): 1000 L
  • plastic bung hole drum: 220 L

Storage & Handling

Shelf Life
12 months
Recommendation for Storage And Handling

Transportation and storage in closed original container; protect from permanent light. Frost-susceptible Material! Ideal storage temperature between 5 - 25 °C.