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Zinc powder

Zinc powder

Zinc powder

Zinc powder, available grades: Analytical Reagent (AR) ≥95.0%, Analytical Reagent (AR) ≥98.0%, High-Purity Reagent ≥99.9%. A strongly reducing metal powder that releases flammable hydrogen on contact with water or moist air. Class 4.3 (subsidiary 4.2), and a marine pollutant. Used as a reducing agent in organic synthesis and dyestuffs, as a battery anode material, as a galvanising and alloying additive, and as a chemical reagent.

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

Hazard Class:Class 4.3 (Dangerous when wet; subsidiary 4.2)
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Specifications

AliasZinc dust, Zinc metal powder
CAS Number7440-66-6Molecular FormulaZn
Molecular Weight65.38AppearanceBluish-grey lustrous metal powder, odourless; usually 100–600 mesh, the finer the powder the higher the reactivity
HS Code7903.10UN Number1436
Density7.133 g/cu cm at 25 °C; 6.830 g/cu cm at 419.5 °C (solid); 6.620 g/cu cm at 419.5 °C (liquid); 6.250 g/cu cm at 800 °CBoiling Point907 °C
Melting Point787 °FFlash PointN/A
OriginChinaVapor Pressure1.47X10-6 Pa (1.10X10-8 mm Hg) at 400 K (127 °C); 0.653 Pa (4.9X10-3 mm Hg) at 600 K (327 °C)
SolubilitySoluble in acids and alkalies; insoluble in waterStorage 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) ≥95.0% / Analytical Reagent (AR) ≥98.0% / High-Purity Reagent ≥99.9%EINECS231-175-3
MDLMFCD00011291China Customs Code7903100000
GHS ClassificationDanger: H250; H260; H410Hazard ClassClass 4.3 (Dangerous when wet; subsidiary 4.2)
CategoryExplosive PrecursorsUpdated2026-09-12

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To purchase this product, please provide the CAS number, purity requirement and quantity; our sales team will reply with pricing and lead time within 24 hours on business days.

Frequently asked questions about Zinc powder

What is Zinc powder? What is its CAS number?

Zinc powder is an industrial chemical raw material. Its CAS number is 7440-66-6. Its molecular formula is Zn, with a molecular weight of 65.38. Common synonyms include Zinc dust, Zinc metal powder. Typical appearance: Bluish-grey lustrous metal powder, odourless; usually 100–600 mesh, the finer the powder the higher the reactivity.

What are the synonyms and registry numbers of Zinc powder?

Zinc powder (CAS 7440-66-6) is listed under the following identifiers. Synonyms: Zinc dust, Zinc metal powder. EINECS number: 231-175-3. MDL number: MFCD00011291.

What documents are provided with Zinc powder (CAS 7440-66-6)?

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

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

Transport of Zinc powder (CAS 7440-66-6) is arranged according to its hazardous classification. UN number: 1436. GHS hazard statements: H250, H260, H410. 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 Zinc powder?

Typical properties of Zinc powder (CAS 7440-66-6): appearance Bluish-grey lustrous metal powder, odourless; usually 100–600 mesh, the finer the powder the higher the reactivity; density 7.133 g/cu cm at 25 °C; 6.830 g/cu cm at 419.5 °C (solid); 6.620 g/cu cm at 419.5 °C (liquid); 6.250 g/cu cm at 800 °C; melting point 787 °F; boiling point 907 °C; vapor pressure 1.47X10-6 Pa (1.10X10-8 mm Hg) at 400 K (127 °C); 0.653 Pa (4.9X10-3 mm Hg) at 600 K (327 °C); solubility Soluble in acids and alkalies; insoluble in water. These are reference values, not a batch specification.

What is the HS code for Zinc powder?

The HS code for Zinc powder (CAS 7440-66-6) is 7903.10. Customs classification may differ by destination country, so please confirm the final code with us before ordering.
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