Substance profile
Ammonium perchlorate
Ammonium perchlorate is white orthorhombic crystals and is odorless.
01 · Identification
What Ammonium perchlorate is
Ammonium perchlorate is white orthorhombic crystals and is odorless. It melts at 130 °C.
Under the GHS it carries the signal word Danger. It is classed as reactive agents - 4th degree.
02 · Identifiers
Ammonium perchlorate identifiers and molecular data
Ammonium perchlorate CAS number and EC number
Ammonium perchlorate molecular formula and molecular weight
Other names for Ammonium perchlorate
- [containing ≥ 80 % of 0-30 µm particles]
03 · GHS classification
Ammonium perchlorate hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
Ammonium perchlorate pictograms and signal word
Ammonium perchlorate hazard class and category
| Hazard class | Category | From code | Pictogram |
|---|---|---|---|
| Explosives GHS chapter 2.1 | Category 1.1 | H201 | GHS01 |
| Oxidising liquids or Oxidising solids | Category 1 | H271 | GHS03 |
Where two values are shown with “or”, the hazard statement is shared by more than one category or by more than one class, and the code alone does not say which. H272, for example, belongs to oxidising liquids and to oxidising solids — the physical state decides. The binding answer for a specific entry is in the CLP Annex VI table itself.
Ammonium perchlorate hazard statements (H-codes)
| Code | Hazard statement |
|---|---|
| H201 | Explosive; mass explosion hazard. |
| H271 | May cause fire or explosion; strong oxidiser. |
This page lists only the codes assigned to Ammonium perchlorate. The full reference lives on the hazard statements hub, the precautionary statements hub and the GHS pictograms hub.
Safety Data Sheet
Getting an SDS for Ammonium perchlorate
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 Ammonium perchlorate 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.
04 · Precautionary statements
Ammonium perchlorate precautionary statements
CLP Annex VI assigns 1 precautionary statement to Ammonium perchlorate. They are grouped the way a label groups them: what to do before handling, what to do when something has already happened, how to store it and how to dispose of it.
Prevention
What to do before and during handling so the hazard never happens.
Reading the notation. … is a blank the supplier fills in — not a truncated sentence.· [square brackets] mark a part printed only when it applies.
05 · Names in the regulation
Ammonium perchlorate name in 23 EU languages
CLP Annex VI Part 3 is published in every language edition of the regulation, and the identification column is written out in each of them. Nothing below is translated by us: each line is the name as that edition prints it. Under Art. 18(2) the substance name from Annex VI is a lawful product identifier, so this is the wording to put on a label going to that market — and where the cell lists several designations, any one of them qualifies.
| Language | Name in CLP Annex VI Part 3 |
|---|---|
| Bulgarian български | амониев перхлорат |
| Spanish español | Perclorato de amonio |
| Czech čeština | chloristan amonný |
| Danish dansk | ammoniumperchlorat |
| German Deutsch | Ammoniumperchlorat |
| Estonian eesti | ammooniumperkloraat |
| Greek ελληνικά | υπερχλωρικό αμμώνιο |
| English English | ammonium perchlorate |
| French français | perchlorate d'ammonium |
| Croatian hrvatski | amonijev perklorat |
| Italian italiano | perclorato di ammonio |
| Latvian latviešu | amonija perhlorāts |
| Lithuanian lietuvių | amonio perchloratas |
| Hungarian magyar | ammónium-perklorát |
| Maltese Malti | perklorat tal-ammonju |
| Dutch Nederlands | ammoniumperchloraat |
| Polish polski | nadchloran amonu chloran(VII) amonu |
| Portuguese português | perclorato de amónio |
| Romanian română | perclorat de amoniu |
| Slovak slovenčina | chloristan amónny |
| Slovenian slovenščina | amonijev perklorat |
| Finnish suomi | ammoniumperkloraatti |
| Swedish svenska | ammoniumperklorat |
All 23 language editions of Annex VI carry this entry. Irish is the twenty-fourth official EU language and has no line here for a different reason: no consolidated CLP text has ever been published in Irish, so there is no Irish edition of Annex VI to quote a name from. Source: consolidated CLP, CELEX 02008R1272, language editions. © European Union, https://eur-lex.europa.eu — only the electronic Official Journal of the European Union is authentic.
06 · Label elements
Ammonium perchlorate GHS label elements
Everything CLP Annex VI fixes for Ammonium perchlorate, laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Danger
Ammonium perchlorate
- Explosive; mass explosion hazard.
- May cause fire or explosion; strong oxidiser.
- Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
Supplier name, address and telephone number· Product identifier·Nominal quantity
Need this as an actual label? Open Ammonium perchlorate in the GHS label constructor →
07 · Health hazards
Ammonium perchlorate health hazards and exposure limits
Ammonium perchlorate hazard summary
Powerful oxidizer and explosive hazard; Concentrated solutions are probably not irritating to the skin; May induce methemoglobinemia after ingestion; [CHEMINFO] The LC (rats and mice) is >300 mg/m3. Observed effects include seizures and liver damage. [ChemIDplus] Irritating to skin and mucous membranes; [CHRIS] See PERCHLORATES.
Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
08 · Physical and chemical properties
Ammonium perchlorate 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.
Ammonium perchlorate melting point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Melting point | 130 °C (266 °F) | HSDB | |
| MP: Decomposes, explodes | decomposes | HSDB |
Ammonium perchlorate density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Density | 1.95 g/cm³ | HSDB | |
| 1.95 g/cm³ | at 25 °C | DOE PAC |
Ammonium perchlorate solubility
| Property | Value | Conditions | Source |
|---|---|---|---|
| Solubility | In water, 2.0X10+5 mg/L at 25 °C | at 25 °C | HSDB |
| In water, 2.45X10+5 mg/L at 25 °C | at 25 °C | HSDB | |
| In water, 2.49X10+5 mg/L at 25 °C | at 25 °C | HSDB |
Ammonium perchlorate vapor pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor pressure | Very low | HSDB |
Ammonium perchlorate autoignition temperature
| Property | Value | Conditions | Source |
|---|---|---|---|
| Autoignition temperature | 240 °C (464 °F) | CAMEO |
Ammonium perchlorate lower explosive limit (LEL)
| Property | Value | Conditions | Source |
|---|---|---|---|
| Lower explosive limit (LEL) | Severe explosion hazard. ... Explodes at 380 °C. | at 380 °C | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
09 · Fire and explosion
Ammonium perchlorate fire and explosion behaviour
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.
Ammonium perchlorate fire potential
Flammable when exposed to heat or flame or by spontaneous chemical reaction with reducing materials. ... Ignites violently with combustibles.
Source: Hazardous Substances Data Bank (HSDB)
Fire and explosion
Strong oxidizer. Heat or shock may cause explosion. Combustion by-products include oxides of nitrogen, ammonia, hydrogen chloride. Closed containers may rupture violently when heated.
Source: HSDB
10 · Handling and storage
Ammonium perchlorate storage and handling
Ammonium perchlorate safe storage
Fireproof. Separated from combustible substances, reducing agents and metals. See Chemical Dangers. Well closed.
Source: ILO-WHO International Chemical Safety Cards (ICSCs)
Ammonium perchlorate storage conditions
Keep container tightly closed in a dry and well-ventilated place. Storage class (TRGS 510): Strongly oxidizing hazardous materials.
Source: Hazardous Substances Data Bank (HSDB)
Ammonium perchlorate incompatible materials
Incompatible materials: Strong reducing agents, strong acids.
Source: Hazardous Substances Data Bank (HSDB)
Ammonium perchlorate reactivity
AMMONIUM PERCHLORATE is a strong oxidizing agent. Decomposes at 130 °C and explodes at 380 °C [Mellor 2 Supp. 1:608 1956]. Explosions have occurred in propellant formulations containing ammonium perchlorate to which ferrocene has been added as a burning rate catalyst. Although the cause was not been definitely established, it was most probably frictional heating from dragging a spatula through the mixture [ASESB Expl. Report 211 1966]. Can explode when mixed with sugar, charcoal or on contact with hot copper pipes. Becomes impact-sensitive when contaminated by powdered carbon, ferrocene, sulfur, or other reducing materials such as organic matter or powdered metals.
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check Ammonium perchlorate in the storage compatibility matrix →
11 · Transport
Ammonium perchlorate UN number and transport classification
Transport classification is a separate system from the GHS classification above. It decides how a package is marked and how a load may be carried; it does not follow from the workplace label, and the workplace label does not follow from it. The entries below are linked by CAS number, never by name.
The same CAS number is shipped under more than one UN number. Which entry applies follows from the form and the concentration of the consignment — read the proper shipping name, not the CAS.
Ammonium perchlorate under UN 0402 — shipping name, class and packing group
Europe · ADR 2025, Table A
| Proper shipping name (3.1.2) | Class | Classification code | PG | Labels (column 5) |
|---|---|---|---|---|
| AMMONIUM PERCHLORATE | 1 | 1.1D | — | |
Source: ADR 2025, Table A of Chapter 3.2 · ECE/TRANS/352 Vol. I (UNECE). Class 1 is “Explosive substances and articles” (ADR 2.1.1.1).
United States · 49 CFR 172.101 Hazardous Materials Table
| Proper shipping name (column 2) | Class or division | PG | Labels (column 6) |
|---|---|---|---|
| Ammonium perchlorate | 1.1D | — | |
Source: 49 CFR 172.101 Hazardous Materials Table · eCFR, revision 2026-08-03. Class 1.1D is “Explosives (with a mass explosion hazard)” (49 CFR 173.2).
Ammonium perchlorate under UN 1442 — shipping name, class and packing group
Europe · ADR 2025, Table A
| Proper shipping name (3.1.2) | Class | Classification code | PG | Labels (column 5) |
|---|---|---|---|---|
| AMMONIUM PERCHLORATE | 5.1 | O2 | II | |
Source: ADR 2025, Table A of Chapter 3.2 · ECE/TRANS/352 Vol. I (UNECE). Class 5.1 is “Oxidizing substances” (ADR 2.1.1.1).
United States · 49 CFR 172.101 Hazardous Materials Table
| Proper shipping name (column 2) | Class or division | PG | Labels (column 6) |
|---|---|---|---|
| Ammonium perchlorate | 5.1 | II | |
Source: 49 CFR 172.101 Hazardous Materials Table · eCFR, revision 2026-08-03. Class 5.1 is “Oxidizer” (49 CFR 173.2).
12 · Questions
Ammonium perchlorate — frequently asked questions
What is the CAS number of Ammonium perchlorate?
The CAS number of Ammonium perchlorate is 7790-98-9. Its EC number is 232-235-1.
What does a Ammonium perchlorate label have to show?
Under CLP Annex VI the label for Ammonium perchlorate carries the pictogram Exploding bomb and the signal word is Danger.
Is Ammonium perchlorate flammable?
CLP Annex VI assigns Ammonium perchlorate no flammability hazard class. That is not a statement that it cannot burn: the harmonised list only records the hazards that were assessed for it.
Is Ammonium perchlorate a carcinogen?
CLP Annex VI records no harmonised carcinogenicity classification for Ammonium perchlorate. Annex VI is a list of agreed classifications, not a list of substances found safe, so this is an absence of a classification rather than a clean bill of health.
What is the melting point of Ammonium perchlorate?
The melting point reported for Ammonium perchlorate is 130 °C (266 °F) (HSDB).
How should Ammonium perchlorate be stored?
Keep container tightly closed in a dry and well-ventilated place. Storage class (TRGS 510): Strongly oxidizing hazardous materials. (Hazardous Substances Data Bank (HSDB))
Nearby
Substances next to Ammonium perchlorate
Keep going: substances starting with A, or search the whole database by name, CAS number, pictogram or signal word.