Substance profile
Diammonium peroxodisulphate
Diammonium peroxodisulphate is platelike or prismatic (monoclinic) crystals, or white granular powder and is odorless.
01 · Identification
What Diammonium peroxodisulphate is
Diammonium peroxodisulphate is platelike or prismatic (monoclinic) crystals, or white granular powder and is odorless. Its molecular formula is H8N2O8S2 and its molecular weight is 228.21 g/mol. It melts at 120 °C.
Under the GHS it carries the signal word Danger. It is classed as reactive agents - 1st degree.
02 · Identifiers
Diammonium peroxodisulphate identifiers and molecular data
Diammonium peroxodisulphate CAS number and EC number
Diammonium peroxodisulphate molecular formula and molecular weight
Other names for Diammonium peroxodisulphate
- ammonium persulphate
03 · GHS classification
Diammonium peroxodisulphate hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
Diammonium peroxodisulphate pictograms and signal word
Diammonium peroxodisulphate hazard class and category
| Hazard class | Category | From code | Pictogram |
|---|---|---|---|
| Oxidising liquids or Oxidising solids | Category 2 or 3 | H272 | GHS03 |
| Acute toxicity - oral GHS chapter 3.1 | Category 4 | H302 | GHS07 |
| Skin corrosion/irritation GHS chapter 3.2 | Category 2 | H315 | GHS07 |
| Serious eye damage/eye irritation GHS chapter 3.3 | Category 2A | H319 | GHS07 |
| Respiratory sensitisation GHS chapter 3.4 | Category 1 or 1A or 1B | H334 | GHS08 |
| Skin sensitisation GHS chapter 3.4 | Category 1 or 1A or 1B | H317 | GHS07 |
| Specific target organ toxicity - single exposure GHS chapter 3.8 | Category 3 | H335 | GHS07 |
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.
Diammonium peroxodisulphate hazard statements (H-codes)
| Code | Hazard statement |
|---|---|
| H272 | May intensify fire; oxidiser. |
| H302 | Harmful if swallowed. |
| H335 | May cause respiratory irritation. |
| H315 | Causes skin irritation. |
| H319 | Causes serious eye irritation. |
| H334 | May cause allergy or asthma symptoms or breathing difficulties if inhaled. |
| H317 | May cause an allergic skin reaction. |
This page lists only the codes assigned to Diammonium peroxodisulphat…. 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 Diammonium peroxodisulphat…
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 Diammonium peroxodisul… 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
Diammonium peroxodisulphate precautionary statements
CLP Annex VI assigns 16 precautionary statements to Diammonium peroxodisulphat…. 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.
Response
What to do once exposure, spillage or fire has already happened.
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
Diammonium peroxodisulphate 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 | диамониев пероксодисулфат амониев персулфат |
| Spanish español | Peroxodisulfato de diamonio persulfato de amonio |
| Czech čeština | diamonium-peroxodisulfát peroxodisíran amonný |
| Danish dansk | diammoniumperoxodisulfat ammoniumpersulfat |
| German Deutsch | Diammoniumperoxodisulfat Ammoniumpersulfat |
| Estonian eesti | diammooniumperoksodisulfaat ammooniumpersulfaat |
| Greek ελληνικά | υπεροξοδιθειικό διαμμώνιο υπερθειικό αμμώνιο |
| English English | diammonium peroxodisulphate ammonium persulphate |
| French français | peroxodisulfate de diammonium persulfate d'ammonium |
| Croatian hrvatski | diamonijev peroksodisulfat amonijev persulfat |
| Italian italiano | perossodisolfato di diammonio |
| Latvian latviešu | diamonija peroksodisulfāts amonija persulfāts |
| Lithuanian lietuvių | diamonio peroksodisulfatas amonio peroksosulfatas |
| Hungarian magyar | diammónium-peroxodiszulfát ammónium-perszulfát |
| Maltese Malti | perossodisulfat tad-diammonju persulfat tal-ammonju |
| Dutch Nederlands | diammoniumperoxodisulfaat ammoniumpersulfaat |
| Polish polski | peroksodisiarczan(VI) diamonu nadtlenodisiarczan(VI) diamonu |
| Portuguese português | peroxodissulfato de diamónio persulfato de amónio |
| Romanian română | peroxidisulfat de diamoniu persulfat de amoniu |
| Slovak slovenčina | peroxodisíran amónny amónium-persulfát |
| Slovenian slovenščina | diamonijev peroksodisulfat amonijev persulfat |
| Finnish suomi | diammoniumperoksodisulfaatti ammoniumpersulfaatti |
| Swedish svenska | diammoniumperoxodisulfat ammoniumpersulfat |
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
Diammonium peroxodisulphate GHS label elements
Everything CLP Annex VI fixes for Diammonium peroxodisulphat…, laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Danger
Diammonium peroxodisulphate
- May intensify fire; oxidiser.
- Harmful if swallowed.
- May cause respiratory irritation.
- Causes skin irritation.
- Causes serious eye irritation.
- May cause allergy or asthma symptoms or breathing difficulties if inhaled.
- May cause an allergic skin reaction.
- Avoid breathing dust/fume/gas/mist/vapours/spray.
- Wash … thoroughly after handling.
- Do not eat, drink or smoke when using this product.
- Contaminated work clothing should not be allowed out of the workplace.
- Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/…
- IF SWALLOWED:
- IF ON SKIN:
- IF IN EYES:
- Call a POISON CENTER/doctor/… if you feel unwell.
- Get medical advice/attention.
- Rinse mouth.
- If skin irritation occurs:
- If skin irritation or rash occurs:
- If eye irritation persists:
- Remove contact lenses, if present and easy to do. Continue rinsing.
- Wash with plenty of water/…
Supplier name, address and telephone number· Product identifier·Nominal quantity
Need this as an actual label? Open Diammonium peroxodisulphat… in the GHS label constructor →
07 · Physical and chemical properties
Diammonium peroxodisulphate 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.
Diammonium peroxodisulphate melting point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Melting point | 120 °C (248 °F) | decomposes | HSDB |
Diammonium peroxodisulphate density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Density | 1.982 g/cm³ | HSDB | |
| 1.9 g/cm³ | ICSC | ||
| 1.98 g/cm³ | at 20 °C | CAMEO |
Diammonium peroxodisulphate solubility
| Property | Value | Conditions | Source |
|---|---|---|---|
| Solubility | Freely soluble in water | HSDB | |
| Solubility in water, g/100ml at 20 °C: 58.2 | at 20 °C | ICSC | |
| Solubility in water: 83.5 g/100 g water at 25 °C | at 25 °C | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
08 · Fire and explosion
Diammonium peroxodisulphat… 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.
Diammonium peroxodisulphate fire potential
Material itself does not burn or burns with difficulty.
Source: Hazardous Substances Data Bank (HSDB)
09 · Handling and storage
Diammonium peroxodisulphate storage and handling
Diammonium peroxodisulphate safe storage
Dry. Well closed. Separated from combustible substances, reducing agents, powdered metals and strong bases.
Source: ILO-WHO International Chemical Safety Cards (ICSCs)
Diammonium peroxodisulphate incompatible materials
A mixutre of ammonium persulfate and sodium peroxide will explode if subjected to crushing (in a mortar), heating, or if a stream of carbon dioxide is passed over it.
Source: Hazardous Substances Data Bank (HSDB)
Diammonium peroxodisulphate reactivity
AMMONIUM PERSULFATE is a potent oxidizing agent. A powdered mixture with aluminum and water can explode [NFPA 491M 1991]. A mixture with sodium peroxide will explode if subjected to friction (crushing in a mortar), heating, or if a stream of carbon dioxide is passed over it [Mellor 10:464 1946-47]. Acidic solutions dissolve iron violently, [Mellor, 1947, Vol. 10, 470].
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check Diammonium peroxodisulpha… in the storage compatibility matrix →
10 · Transport
Diammonium peroxodisulphate 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.
Diammonium peroxodisulphate under UN 1444 — 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 PERSULPHATE | 5.1 | O2 | III | |
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 persulfate | 5.1 | III | |
Source: 49 CFR 172.101 Hazardous Materials Table · eCFR, revision 2026-08-03. Class 5.1 is “Oxidizer” (49 CFR 173.2).
11 · Questions
Diammonium peroxodisulphate — frequently asked questions
What is the CAS number of Diammonium peroxodisulphate?
The CAS number of Diammonium peroxodisulphate is 7727-54-0. Its EC number is 231-786-5.
What is the chemical formula of Diammonium peroxodisulphate?
The molecular formula of Diammonium peroxodisulphate is H8N2O8S2 and its molecular weight is 228.21 g/mol.
What does a Diammonium peroxodisulphate label have to show?
Under CLP Annex VI the label for Diammonium peroxodisulphate carries the pictograms Flame over circle, Health hazard and Exclamation mark and the signal word is Danger.
Is Diammonium peroxodisulphate flammable?
CLP Annex VI assigns Diammonium peroxodisulphate 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 Diammonium peroxodisulphate a carcinogen?
CLP Annex VI records no harmonised carcinogenicity classification for Diammonium peroxodisulphate. 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 Diammonium peroxodisulphate?
The melting point reported for Diammonium peroxodisulphate is 120 °C (248 °F), decomposes (HSDB).
Nearby
Substances next to Diammonium peroxodisulphat…
Keep going: substances starting with D, or search the whole database by name, CAS number, pictogram or signal word.