Substance profile
Zinc powder - zinc dust (pyrophoric)
Zinc powder - zinc dust (pyrophoric) is a bluish-white, lustrous metal; distorted hexagonal close-packed structure.
01 · Identification
What Zinc powder - zinc dust… is
Zinc powder - zinc dust (pyrophoric) is a bluish-white, lustrous metal; distorted hexagonal close-packed structure. Its molecular formula is Zn and its molecular weight is 65.4 g/mol. It boils at 907 °C, melts at 420 °C, is soluble in water.
Under the GHS it carries the signal word Danger. It is classed as flammable agents - 3rd degree.
02 · GHS classification
Hazards and label elements
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
| Code | Hazard statement |
|---|---|
| H250 | Catches fire spontaneously if exposed to air. |
| H260 | In contact with water releases flammable gases which may ignite spontaneously. |
| H400 | Very toxic to aquatic life. |
| H410 | Very toxic to aquatic life with long lasting effects. |
Precautionary statements: P273, P391, P501
This page lists only the codes assigned to Zinc powder - zinc dust…. The full reference lives on the hazard statements hub, the precautionary statements hub and the GHS pictograms hub.
03 · Physical and chemical properties
Zinc powder - zinc dust… properties
Every value is shown with the conditions it was measured under and the source it came from. Where sources disagree, all values are listed rather than one being picked — the difference is usually a different form of the substance, not an error.
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | 907 °C (1664.6 °F) | HSDB | |
| 907 °C (1664.6 °F) | at 760 mmHg | DOE PAC | |
| Melting point | 419.53 °C (787.2 °F) | HSDB | |
| 419 °C (786.2 °F) | ICSC | ||
| Density | 7.1 g/cm³ | ICSC | |
| 7.133 g/cm³ | at 25 °C | HSDB | |
| 7.134 g/cm³ | at 25 °C | DOE PAC | |
| Solubility | Soluble in acids and alkalies; insoluble in water | HSDB | |
| Solubility in water: reaction | ICSC | ||
| Vapor pressure | 1.103e-8 mmHg | at 127 °C | HSDB |
| Autoignition temperature | 460 °C (860 °F) | ICSC |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Fire and explosion
Fire and explosion behaviour of Zinc powder - zinc dust…
These are descriptions rather than measured values, so they are kept out of the table above and quoted here with the source that reported them.
Fire and explosion
A cloud of zinc dust generated by sieving the hot dried material exploded violently, apparently after initiation by a spark from the percussive sieve-shaking mechanism ... The possibility of explosions of zinc dust suspended in air is presented as a serious hazard ...
Source: HSDB
05 · Handling and storage
Storing and handling Zinc powder - zinc dust…
Storage conditions
Fireproof. Separated from acids, bases oxidants. Dry. /Zinc powder/
Source: Hazardous Substances Data Bank (HSDB)
Incompatible materials
Incompatible with NH4NO3, barium oxide, Ba(NO3)2, Cadmium, CS2, chlorates, Cl2, CrO3, (ethyl acetoacetate + tribromoneopentyl alcohol), F2, hydrazine mononitrate, hydroxylamine, Pb(N3)2, (Mg + Ba(NO3)2 + BaO2), MnCl2, HNO3, performic acid, KClO3, KNO3, K2O2, Selenium, NaClO3, Na2O2, Sulfur, Te, water, (NH4)2S, As2O3, CS2, CaCl2, NaOH, chlorinated rubber, catalytic metals, halocarbons, o-nitroanisole, nitrobenzene, nonmetals, oxidants, paint primer base, pentacarbonyliron, transition metal halides, seleninyl bromide.
Source: Hazardous Substances Data Bank (HSDB)
Reactivity
In the presence of moisture, it may ignite spontaneously on contact with air; reacts violently with oxidants and powdered sulfur, causing fire and explosion hazards. [Handling Chemicals Safely 1980. p. 966].
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check Zinc powder - zinc dust… in the storage compatibility matrix →
Safety Data Sheet
Getting an SDS for Zinc powder - zinc dust…
A Safety Data Sheet is written for a product, not for a substance: the supplier of the grade you actually buy issues it, so two suppliers of Zinc powder - zinc… issue two different sheets. That is why there is no single authoritative SDS for a substance to download — what there is, is the job of collecting the sheets for the products you hold and keeping them current as suppliers revise them.
Nearby
Substances next to Zinc powder - zinc dust…
Keep going: substances starting with Z, or search the whole database by name, CAS number, pictogram or signal word.