/01Zinc Dust
ZRP / Ethyl silicate
Anti-corrosion coatings
Zinc-rich protective coatings and ethyl-silicate paints that shield steel from corrosion. Service life extension for offshore oil platforms, steel bridges and petrochemical facilities.
Industrial Zinc Dust · 3 grades · Tested per ISO 3549:2024
High purity Zinc Dustfor coatings, plating, chemistry and pharma.
Fine zinc powder produced by condensing zinc vapours. Three grades engineered to ISO 3549:2024 spec windows: Superfine (2 to 4 µm) and Fine (4 to 6 µm) spherical, plus Fine Flake (4 to 6 µm) lamellar for Geomet and Dacromet coatings.
- Certificate of Analysis on every shipment
- Tested by laser diffraction, ISO 3549:2024 and ISO 787/10
- Bulk-bag, drum and 3-layer paper packaging
/ Datasheet
TOTAL ZN≥ 99.0% typical
PARTICLEd0.5 2 to 6 µm
STANDARDISO 3549:2024
PACKING25 / 50 / 1000 kg
What is Atso Tek Zinc Dust
A controlled metallic powder, not a generic commodity.
Zinc Dust is composed of fine, spherical particles produced by condensing zinc vapours. It carries strategic value across coatings, metallurgy, chemical processes, paints and anti-corrosion applications. Atso Tek delivers it with a consistent supply chain and dependable logistics, lot by lot.
/01
Total zinc
≥ 99.0%
typical · limit > 98.0%
/02
Metallic zinc
95 to 96%
typical · limit > 94.0%
/03
Particle d0.5
2 to 6 µm
by grade, laser diffraction
/04
Specific gravity
7.0 to 7.2
ISO 787/10
Three grades, one supplier
Pick the grade that matches your application.
Each grade has a defined particle window, particle shape and use case. Select against your formulation and we will supply the matching catalogue grade.
GRADE 01 / SUPERFINE/01
Superfine (2 to 4 µm)
Total Zn ≥ 99.0% · Metallic Zn ≥ 96.0%Most-used grade
Standard, homogeneous, micronized zinc powder with spherical particles, d0.5 of 3.1 µm typical. Designed for industrial paints, anti-corrosion coatings and electroplating. Sieve residue at 45 µm is 0.01% max, so the powder disperses without grit in high-solids systems.
Typical applications
- AIndustrial paints
- BAnti-corrosion coatings
- CElectroplating
- DProtective primers
GRADE 02 / FINE/02
Fine (4 to 6 µm)
Total Zn ≥ 99.0% · Metallic Zn ≥ 95.0%High reactivity
Spherical zinc powder with a slightly larger particle window than Superfine, d0.5 of 5.5 µm typical and 0.01% max sieve residue at 45 µm. Stable, predictable reactivity for catalysts, pharmaceutical chemistry, chemical processes and sensitive composite manufacturing.
Typical applications
- ACatalysts
- BPharmaceutical chemistry
- CChemical processes
- DSensitive composites
GRADE 03 / FINE FLAKE/03
Fine Flake (4 to 6 µm)
Total Zn ≥ 99.0% · Metallic Zn ≥ 95.0%Lamellar · longer salt fog
Lamellar fine powder rather than spherical. The platelets lie parallel in the dried film, turning point contact into surface contact — a denser coating and a longer corrosion path. That means stronger covering power, better shielding and longer salt-fog life at lower zinc loading and lower film thickness per unit area. Slower sedimentation in the can; moisture-sensitive in storage.
Typical applications
- AZinc-rich paints and powder coatings
- BDacromet / Geomet and Zn-Cr systems
- CShips, warships and automotive parts
- DIron towers and structural steel
Specifications guaranteed
Typical values and the contract limit, side by side.
The first three columns are the typical lot result for each grade. The limit column is the boundary we contract to — every lot ships with a Certificate of Analysis you can check against it. Test methods per ISO 3549:2024 (chemistry), ISO 787/10 (specific gravity), laser diffraction (particle size) and SEM (shape).
/ Datasheet · Zinc Dust
| Parameter | Superfine | Fine | Fine Flake | Limit | Unit |
|---|---|---|---|---|---|
| Particle size (d0.5) | 3.1 | 5.5 | 5.5 | per grade | µm |
| Sieve residue (45 µm) | 0.01 | 0.01 | 0.2 | < 0.5 | % max |
| Total zinc | 99.0 | 99.0 | 99.0 | > 98.0 | % min |
| Metallic zinc | 96.0 | 95.0 | 95.0 | > 94.0 | % min |
| Lead (Pb) | 0.02 | 0.02 | 0.02 | < 0.1 | % max |
| Cadmium (Cd) | 0.001 | 0.001 | 0.001 | < 0.03 | % max |
| Iron (Fe) | 0.004 | 0.004 | 0.004 | < 0.005 | % max |
| Arsenic (As) | 0.0001 | 0.0001 | 0.0001 | < 0.0005 | % max |
| Chloride (Cl) | 0.001 | 0.001 | 0.001 | < 0.005 | % max |
| Acid-insoluble | 0.02 | 0.02 | 0.02 | < 0.05 | % max |
| Color | Bluish gray | Bluish gray | Bluish gray | Visual | |
| Shape | Spherical | Spherical | Flake | SEM | |
| Specific gravity | 7.0 to 7.2 | 7.0 to 7.2 | 7.0 to 7.2 | ISO 787/10 |
Particle size (d0.5)
µm
Superfine
3.1
Fine
5.5
Fine Flake
5.5
Limit
per grade
Sieve residue (45 µm)
% max
Superfine
0.01
Fine
0.01
Fine Flake
0.2
Limit
< 0.5
Total zinc
% min
Superfine
99.0
Fine
99.0
Fine Flake
99.0
Limit
> 98.0
Metallic zinc
% min
Superfine
96.0
Fine
95.0
Fine Flake
95.0
Limit
> 94.0
Lead (Pb)
% max
Superfine
0.02
Fine
0.02
Fine Flake
0.02
Limit
< 0.1
Cadmium (Cd)
% max
Superfine
0.001
Fine
0.001
Fine Flake
0.001
Limit
< 0.03
Iron (Fe)
% max
Superfine
0.004
Fine
0.004
Fine Flake
0.004
Limit
< 0.005
Arsenic (As)
% max
Superfine
0.0001
Fine
0.0001
Fine Flake
0.0001
Limit
< 0.0005
Chloride (Cl)
% max
Superfine
0.001
Fine
0.001
Fine Flake
0.001
Limit
< 0.005
Acid-insoluble
% max
Superfine
0.02
Fine
0.02
Fine Flake
0.02
Limit
< 0.05
Color
Superfine
Bluish gray
Fine
Bluish gray
Fine Flake
Bluish gray
Limit
Visual
Shape
Superfine
Spherical
Fine
Spherical
Fine Flake
Flake
Limit
SEM
Specific gravity
Superfine
7.0 to 7.2
Fine
7.0 to 7.2
Fine Flake
7.0 to 7.2
Limit
ISO 787/10
Note: Source: Atso Tek technical datasheets, ISO 3549:2024 revision. Particle size window is 2 to 4 µm for Superfine and 4 to 6 µm for Fine and Fine Flake. Typical values reflect normal lot performance; the limit column is what we contract to.
Laser diffraction analysis
The particle size distribution, measured — not estimated.
Superfine grade measured on a Sympatec HELOS (H2396) with cuvette dispersion, R3 range 0.5 to 175 µm, ethanol medium, evaluated by HRLD. Mean of five runs. This is the curve behind the d0.5 figure in the table above.
/ Superfine 2 to 4 µm
Sympatec HELOS (H2396) · CUVETTE · R3 0.5 to 175 µm
x10
1.64 µm
10% finer than
x50
3.01 µm
median, d0.5
x90
5.00 µm
90% finer than
x99
8.05 µm
coarse tail
VMD
3.25 µm
volume mean
SV
1.56 m²/cm³
specific surface
Representative lot. Each shipment carries its own Certificate of Analysis with the measured distribution for that lot.
Where Atso Tek zinc dust ships
Coatings, marine, chemistry and plating.
Per the official catalogue, Atso Tek Zinc Dust is used across zinc-rich coatings, marine and offshore protection, pigments, batteries, chemical compounds, plating and purification.
/02Zinc Dust
Marine / Offshore
Marine and offshore
Marine equipment and ship maintenance. Zinc dust strengthens metal surface durability under the harshest conditions.
/03Zinc Dust
Chemical process
Chemical and pharma
Catalysts, pharmaceutical industry, chemical reactions and sensitive composite manufacturing. Used in pigment, battery and chemical compound production.
/04Zinc Dust
Plating / Pigments
Plating and Geomet / Dacromet
Electroplating, Geomet and Dacromet coating technologies. Fine Flake grade engineered specifically for high-coverage zinc-rich paints and plating systems.
Compliance and documentation
Documents your QC team and customs broker actually need.
Every shipment ships with the paperwork you need to clear customs and pass incoming inspection.
Standards we ship against
ISO 3549:2024/01
Zinc dust pigments for paints, requirements and test methods
ISO 787/10/02
Specific gravity / density determination
Laser Diffraction/03
Particle size distribution (Sympatec HELOS)
SEM Technique/04
Particle shape verification, spherical or flake
Visual/05
Color (bluish gray)
ISO 9001 · 14001 · 45001/06
Quality, environmental and OH&S management
Packaging and shippingHow it ships.
/01
Paper bags
25 kg
3-layer
/02
Steel drums
25 to 50 kg
per customer order
/03
Bulk bags
250 to 1000 kg
Fine Flake: 500 to 1000 kg
/04
Storage
Cool, dry
moisture-sensitive
Buyer questions
What zinc dust buyers ask before the first shipment.
Superfine (2 to 4 µm, spherical) for industrial paints, anti-corrosion coatings and electroplating. Fine (4 to 6 µm, spherical) for catalysts, pharmaceutical chemistry and sensitive composites. Fine Flake (4 to 6 µm, lamellar) for zinc-rich paints, Geomet and Dacromet systems — the platelet shape shields at a lower zinc loading than spherical powder. We can recommend against your formulation if you share the application.
Request for quote · 24h response
Tell us your tonnage,we'll quote it tomorrow.
Send your grade (Superfine 2 to 4 µm, Fine 4 to 6 µm, or Fine Flake 4 to 6 µm), monthly volume and destination port. You'll get a written quote with FOB, CIF, CFR or DAP pricing, lead time and packaging within one business day.