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Aluminium powder

Aluminium powder

Aluminium powder

Aluminium powder, available grades: Analytical Reagent (AR) ≥99.0%. A strongly reducing metal powder that releases flammable hydrogen on contact with water or moist air. Class 4.3 for uncoated powder; coated aluminium powder is carried as Class 4.1 flammable solid. Used as a metallothermic (thermite) reducing agent, a steel deoxidiser and alloying additive, and in pigments and pyrotechnics.

OEM supported. Custom purity & specifications available, please contact our manager.

Hazard Class:Class 4.3 (Dangerous when wet)
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Specifications

AliasAluminum powder, uncoated
CAS Number7429-90-5Molecular FormulaAl
Molecular Weight26.98AppearanceSilvery-white metal powder, odourless; usually 100–500 mesh, non-lamellar structure, the finer the powder the higher the reactivity
HS Code7603.10UN Number1396
Density2.7 (NIOSH, 2024) - Denser than water; will sinkBoiling Point4221 °F at 760 mmHg (NIOSH, 2024)
Melting Point1220 °F (NIOSH, 2024)Flash PointN/A
OriginChinaVapor Pressure0 mmHg (approx) (NIOSH, 2024)
SolubilityInsoluble (NIOSH, 2024)Storage ConditionDry, well-ventilated place, strictly protected from water, moisture, acids and oxidizers
Packaging500 g / 25 kg / 200 kg / 1 tShelf Life6-24 months
GradeAnalytical Reagent (AR)EINECSN/A
MDLMFCD00134029China Customs Code7603100000
GHS ClassificationDanger: H250; H260; H261Hazard ClassClass 4.3 (Dangerous when wet)
CategoryExplosive PrecursorsUpdated2026-09-12

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Frequently asked questions about Aluminium powder

What is Aluminium powder? What is its CAS number?

Aluminium powder is an industrial chemical raw material. Its CAS number is 7429-90-5. Its molecular formula is Al, with a molecular weight of 26.98. Common synonyms include Aluminum powder, uncoated. Typical appearance: Silvery-white metal powder, odourless; usually 100–500 mesh, non-lamellar structure, the finer the powder the higher the reactivity.

What are the synonyms and registry numbers of Aluminium powder?

Aluminium powder (CAS 7429-90-5) is listed under the following identifiers. Synonyms: Aluminum powder, uncoated. MDL number: MFCD00134029.

What documents are provided with Aluminium powder (CAS 7429-90-5)?

A Certificate of Analysis (COA) is issued for each batch of Aluminium powder. Standard purity grade: Analytical Grade. Safety Data Sheet (MSDS/SDS) and technical data sheet are available on request before ordering.

Is Aluminium powder classified as dangerous goods? Which UN number applies?

Transport of Aluminium powder (CAS 7429-90-5) is arranged according to its hazardous classification. UN number: 1396. GHS hazard statements: H250, H260, H261. We ship under IMDG (sea), IATA (air) or ADR (road) rules with compliant UN packaging; the final classification is confirmed against the batch test report.

What are the typical physical and chemical properties of Aluminium powder?

Typical properties of Aluminium powder (CAS 7429-90-5): appearance Silvery-white metal powder, odourless; usually 100–500 mesh, non-lamellar structure, the finer the powder the higher the reactivity; density 2.7 (NIOSH, 2024) - Denser than water; will sink; melting point 1220 °F (NIOSH, 2024); boiling point 4221 °F at 760 mmHg (NIOSH, 2024); vapor pressure 0 mmHg (approx) (NIOSH, 2024); solubility Insoluble (NIOSH, 2024). These are reference values, not a batch specification.

What is the HS code for Aluminium powder?

The HS code for Aluminium powder (CAS 7429-90-5) is 7603.10. Customs classification may differ by destination country, so please confirm the final code with us before ordering.
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