Quick Search
Dusil WM133 is primarily used to reduce surface tension, enhance substrate wetting, and promote uniform film formation, especially on difficult or low-energy surfaces.
Dusil WM133 helps prevent common surface defects such as cratering, pinholes, fisheyes, and orange peel, leading to better appearance and higher gloss.
CAS Number: Not specifically assigned for the commercial product DUSIL WM133 (these treated silica matting agents are mixtures; individual CAS numbers typically apply to untreated silica like SiO₂ but not always to specific commercial grades)
EC Number: Not specifically assigned for DUSIL WM133 (treated amorphous silica products often fall under broader silica inventory listings rather than unique EC entries)
Substance type: Organically treated silica matting agent
Main chemical family: Silicon dioxide (amorphous silica) with organic surface treatment
Molecular Formula: Not applicable (product is a treated particulate, not a single molecule)
Molecular Weight: Not applicable (complex mixture; amorphous silica has variable composition)
SYNONYMS:
Organically treated silica, silica matting agent, treated amorphous silica, matting silica powder, silica matting additive, DUSIL WM-133, Organically treated silica, treated amorphous silica, silica matting agent, silica matting powder, silica matting additive, surface-treated silica, modified silica, hydrophobic silica matting agent, coating-grade silica, paint matting silica, matte-effect silica, gloss-reduction silica, functional silica additive, precipitated silica (treated), amorphous silicon dioxide (treated), silicon dioxide matting agent, silica flatting agent, silica dulling agent, silica texturizing agent, low-gloss additive silica, surface-texture modifier, inorganic matting filler, performance silica additive
Dusil WM133 is an organically treated amorphous silica matting agent used primarily in coatings and surface finishes to reduce gloss, improve surface texture, and enhance aesthetic qualities of paints and coatings.
Dusil WM133 is a powdered additive based on treated silica that helps create matte or low-sheen surfaces without significantly affecting viscosity or drying performance.
Dusil WM133 is an organically treated amorphous silica matting agent powder used in coatings to produce matte finishes.
Dusil WM133 is a white particulate with a particle size of ~6–7 µm, neutral pH, and low moisture content.
Chemically inert and insoluble, Dusil WM133 functions by physically modifying surface texture.
Dusil WM133 does not have a unique CAS or EC number as a discrete chemical because it is a treated particulate mixture.
Dusil WM133's benefits include excellent surface quality, good dispersion, and minimal viscosity impact.
Dusil WM133 is a silicone-based specialty chemical used as a wetting and leveling additive in liquid formulations.
Chemically, Dusil WM133 belongs to the class of modified polysiloxanes, which are designed to provide controlled surface activity by significantly reducing surface and interfacial tension.
This chemical structure allows Dusil WM133 to migrate efficiently to the surface of a formulation, where it improves wetting, spreading, and film uniformity without adversely affecting bulk properties.
Due to its silicone backbone and organic modification, Dusil WM133 offers excellent compatibility with a wide range of resin systems, including water-based and solvent-based formulations.
Dusil WM133's chemical design enables effective performance at low dosage levels, providing durable surface modification, improved flow, and enhanced leveling while maintaining formulation stability.
As a result, Dusil WM133 is widely used as a functional surface-control additive in coatings, inks, adhesives, and other industrial chemical systems.
USES and APPLICATIONS of DUSIL WM133:
Dusil WM133 is formulated for use as a matting agent and surface additive in coatings and paints.
Dusil WM133 is used for architectural coatings (to lower gloss and produce matte finishes), and Industrial paints and coatings.
Dusil WM133 is used ink formulations where controlled surface appearance is needed.
Dusil WM133 is used impregnation coatings for paper or textiles where surface texture control is desired.
Dusil WM133 is clear or pigmented systems requiring reduced sheen without performance loss.
Dusil WM133 creates a uniform matte surface by physically increasing surface roughness through fine particulate dispersion in the coating.
This matting effect is widely used where aesthetic and functional surface properties are important.
Dusil WM133 functions primarily through a physical matting mechanism rather than a chemical interaction with binders.
When incorporated into a coating formulation, the treated silica particles distribute evenly within the film and protrude slightly at the surface after drying.
This microscopic surface irregularity causes incoming light to scatter rather than reflect uniformly, which results in a controlled reduction of gloss.
Because Dusil WM133 is amorphous and organically treated, this effect is achieved without significantly weakening film integrity or clarity compared to untreated mineral fillers.
One of the defining advantages of Dusil WM133 is its surface treatment, which improves compatibility with organic resin systems such as acrylics, polyurethanes, alkyds, and certain epoxy formulations.
The organic modification reduces hydrogen bonding between silica particles, helping to prevent excessive agglomeration during dispersion.
As a result, formulators can achieve a more uniform matte appearance with lower risk of haze, streaking, or uneven gloss distribution, especially in clear or lightly pigmented coatings.
In practical formulation work, Dusil WM133 is valued for its balanced oil absorption and particle size distribution.
These characteristics allow Dusil WM133 to provide effective matting while minimizing the increase in formulation viscosity.
This is particularly important in spray-applied systems, where excessive viscosity can negatively affect atomization, film build, and surface leveling.
Compared to coarser matting agents, Dusil WM133 helps maintain smoother flow and better application control while still achieving a soft matte finish.
From a durability standpoint, coatings containing Dusil WM133 generally show good mechanical stability when the product is properly dispersed.
Dusil WM133 particles are chemically inert and do not degrade under typical coating curing temperatures.
This stability means that gloss reduction remains consistent over time and is less prone to post-application changes caused by thermal exposure or mild chemical contact.
However, as with most silica-based matting agents, excessive loading can reduce abrasion resistance, so optimization of dosage is essential.
Dusil WM133 is also used to fine-tune surface feel and tactile properties.
In addition to visual matting, Dusil WM133 can contribute to a subtle dry or silky touch, which is desirable in architectural coatings, wood finishes, and certain industrial topcoats.
This sensory effect is increasingly important in high-end decorative coatings where both appearance and touch perception influence product quality.
Dusil WM133 is a silicone-based wetting and leveling additive designed to improve surface performance in a wide range of liquid formulations.
Dusil WM133 is primarily used to reduce surface tension, enhance substrate wetting, and promote uniform film formation, especially on difficult or low-energy surfaces.
In coatings and paints, Dusil WM133 is applied to improve flow, leveling, and surface smoothness.
Dusil WM133 helps prevent common surface defects such as cratering, pinholes, fisheyes, and orange peel, leading to better appearance and higher gloss.
Dusil WM133 is effective in water-based and solvent-based systems and is commonly used in industrial coatings, decorative paints, wood coatings, and protective finishes.
In inks and printing formulations, Dusil WM133 enhances wetting of pigments and substrates, improving print quality, color uniformity, and edge definition.
Dusil WM133 contributes to smoother ink laydown and reduces surface defects during high-speed printing processes, including flexographic, gravure, and screen printing.
In adhesive and sealant applications, Dusil WM133 improves substrate wetting and spreading, which can enhance adhesion performance and consistency.
Dusil WM133 supports uniform application and helps reduce surface irregularities, especially on plastic, metal, or coated substrates.
In textile and leather finishing, Dusil WM133 is used to improve wetting and penetration of finishing formulations, ensuring more even treatment of fibers and surfaces.
This results in better appearance, handle, and performance of the finished material.
In industrial and specialty chemical formulations, Dusil WM133 functions as a process aid to improve compatibility, stability, and application behavior.
Dusil WM133 is often used where low foam generation, excellent spreading, and reliable surface control are required.
Overall, Dusil WM133 is valued for its ability to enhance wetting, leveling, and surface quality across multiple industries, contributing to improved performance, efficiency, and final product appearance.
From a processing perspective, Dusil WM133 is typically introduced during the grinding or let-down stage, depending on the formulation design.
Proper wetting and dispersion energy are critical to prevent particle clustering.
When handled correctly, Dusil WM133 integrates smoothly into the formulation and provides reproducible matting performance from batch to batch, which is a key requirement in industrial production environments.
In regulatory and safety contexts, Dusil WM133 is considered a treated amorphous silica preparation, meaning it does not behave like crystalline silica.
The primary occupational concern relates to dust exposure during handling of the dry powder, not chemical toxicity.
Once incorporated into a liquid coating matrix, the risk of inhalation exposure is significantly reduced.
This makes Dusil WM133 suitable for large-scale industrial use when standard industrial hygiene practices are followed.
Dusil WM133 occupies a position as a versatile, mid-range matting agent that balances matting efficiency, ease of formulation, and surface quality.
Dusil WM133 is often selected when formulators require a consistent matte effect with minimal side effects on viscosity, drying, or film appearance, making it suitable for both decorative and functional coating systems.
CHEMICAL PROPERTIES of DUSIL WM133:
*Base Composition:
Dusil WM133 in amorphous form, with organic surface treatment to improve compatibility with organic coating systems.
*Chemical nature:
Treated inorganic oxide.
*Reactivity:
Dusil WM133 is chemically inert under normal use.
Dusil WM133 does not react with binder resins or solvents under typical coating conditions.
*Solubility:
Dusil WM133 is insoluble in water and organic solvents.
Dusil WM133 exists as discrete solid particles.
*Surface Treatment:
Organic treatment increases compatibility with paint binders and dispersion stability.
*pH Behavior:
Near neutral when dispersed in water or coating medium.
*Incompatibilities:
Dusil WM133 may sift or segregate if mixed incorrectly.
Dusil WM133 should be added under controlled dispersion conditions.
*Thermal Behavior:
Dusil WM133 is stable in the temperature range used for coating drying and curing.
Dusil WM133 does not degrade under standard conditions of use.
BENEFITS & CHARACTERISTICS of DUSIL WM133:
Dusil WM133 offers the following benefits:
*High matting efficiency — effective at reducing gloss.
*Good dispersion performance — easy to incorporate into coatings.
*Minimal effect on paint viscosity — retained flow and application properties.
*Dusil WM133 is improved surface smoothness — consistent matte finish.
*Less influence on weathering or drying properties — maintains coating performance.
*Universal compatibility with various binder systems when correctly formulated.
*These characteristics make Dusil WM133 suitable for coatings where aesthetic quality and functional matte performance are desired.
PHYSICAL and CHEMICAL PROPERTIES of DUSIL WM133:
Name: DUSIL WM133
Substance type: Organically treated silica matting agent
Main chemical family: Silicon dioxide (amorphous silica) with organic surface treatment
CAS Number: Not specifically assigned for the commercial product DUSIL WM133 (these treated silica matting agents are mixtures;
individual CAS numbers typically apply to untreated silica like SiO₂ but not always to specific commercial grades)
EC Number: Not specifically assigned for DUSIL WM133 (treated amorphous silica products often fall under broader silica inventory listings rather than unique EC entries)
Molecular Formula: Not applicable (product is a treated particulate, not a single molecule)
Molecular Weight: Not applicable (complex mixture; amorphous silica has variable composition)
Appearance: White powder
Particle size (Malvern): Approximately 6.0–7.0 μm
pH (dispersion): About 6.0–7.0 (near neutral)
Moisture content: Maximum ~3% by weight
Oil absorption: ~250–280 mL per 100 g (indicates surface area and absorption capacity)
Texture: Fine, free-flowing powder
Color: White to off-white
Density / Bulk Characteristics: Typical for treated amorphous silica (low bulk density; white fine particulate)
Effect on Viscosity: Minimal influence on coating viscosity when properly dispersed
Gloss Reduction: Matting action due to surface roughness created by silica particles
Thermal Stability: Inert at normal coating processing temperatures (no significant chemical change under ambient or typical curing conditions)
Appearance: White to off-white fine powder
Physical state: Solid
Odor: Odorless
Particle shape: Irregular, amorphous particles
Average particle size (D50): Approximately 6–7 µm
Particle size distribution: Narrow, designed for uniform matting performance
Bulk density: Low bulk density (typical for treated amorphous silica powders)
Moisture content: Typically ≤ 3.0%
Color (dry): White
Flowability: Free-flowing powder under dry conditions
Surface area: High specific surface area (characteristic of matting-grade silica)
Oil absorption: Approximately 250–280 mL / 100 g
Sedimentation behavior: Low tendency when properly dispersed in coating systems
Thermal stability: Stable under normal coating processing and curing temperatures
Chemical nature: Organically treated amorphous silica
Base composition: Silicon dioxide (SiO₂) with organic surface modification
Chemical structure: Non-crystalline (amorphous) inorganic oxide with surface treatment
Molecular formula: Not applicable (mixture / particulate solid)
Molecular weight: Not applicable (not a discrete molecular compound)
pH (aqueous dispersion): Approximately 6.0 – 7.0
Solubility in water: Insoluble
Solubility in organic solvents: Insoluble
Reactivity: Chemically inert under normal conditions of use
Chemical stability: Stable under ambient and formulation conditions
Oxidizing properties: None
Reducing properties: None
Flammability: Non-flammable
Explosive properties: None
Volatile content: Essentially zero
Decomposition: No hazardous decomposition under normal processing temperatures
Compatibility: Chemically compatible with most organic resin systems
FIRST AID MEASURES of DUSIL WM133:
-Description of first-aid measures
*General advice:
Show this material safety data sheet to the doctor in attendance.
*If inhaled:
After inhalation:
Fresh air.
*In case of skin contact:
Take off immediately all contaminated clothing.
Rinse skin with
water/ shower.
*In case of eye contact:
After eye contact:
Rinse out with plenty of water.
Call in ophthalmologist.
Remove contact lenses.
*If swallowed:
After swallowing:
Immediately make victim drink water (two glasses at most).
Consult a physician.
-Indication of any immediate medical attention and special treatment needed.
No data available
ACCIDENTAL RELEASE MEASURES of DUSIL WM133:
-Environmental precautions:
Do not let product enter drains.
-Methods and materials for containment and cleaning up:
Cover drains.
Collect, bind, and pump off spills.
Observe possible material restrictions.
Take up dry.
Dispose of properly.
Clean up affected area.
FIRE FIGHTING MEASURES of DUSIL WM133:
-Extinguishing media:
*Suitable extinguishing media:
Carbon dioxide (CO2)
Foam
Dry powder
*Unsuitable extinguishing media:
For this substance/mixture no limitations of extinguishing agents are given.
-Further information:
Prevent fire extinguishing water from contaminating surface water or the ground water system.
EXPOSURE CONTROLS/PERSONAL PROTECTION of DUSIL WM133:
-Control parameters:
--Ingredients with workplace control parameters:
-Exposure controls:
--Personal protective equipment:
*Eye/face protection:
Use equipment for eye protection.
Safety glasses
*Body Protection:
protective clothing
*Respiratory protection:
Recommended Filter type: Filter A
-Control of environmental exposure:
Do not let product enter drains.
HANDLING and STORAGE of DUSIL WM133:
-Conditions for safe storage, including any incompatibilities:
*Storage conditions:
Tightly closed.
Dry.
STABILITY and REACTIVITY of DUSIL WM133:
-Chemical stability:
The product is chemically stable under standard ambient conditions (room temperature).
-Possibility of hazardous reactions:
No data available
