Substance profile
3-iodpropene
3-iodpropene is a substance with a harmonised classification under EU CLP.
01 · Identification
What 3-iodpropene is
3-iodpropene is a substance with a harmonised classification under EU CLP.
Under the GHS it carries the signal word Danger. It is classed as corrosives.
02 · Identifiers
3-iodpropene identifiers and molecular data
3-iodpropene CAS number and EC number
3-iodpropene molecular formula and molecular weight
Other names for 3-iodpropene
- allyl iodide
03 · GHS classification
3-iodpropene hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
3-iodpropene pictograms and signal word
3-iodpropene hazard class and category
| Hazard class | Category | From code | Pictogram |
|---|---|---|---|
| Flammable liquids GHS chapter 2.6 | Category 2 | H225 | GHS02 |
| Skin corrosion/irritation GHS chapter 3.2 | Category 1A or 1B or 1C | H314 | GHS05 |
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.
3-iodpropene hazard statements (H-codes)
| Code | Hazard statement |
|---|---|
| H225 | Highly flammable liquid and vapour. |
| H314 | Causes severe skin burns and eye damage. |
This page lists only the codes assigned to 3-iodpropene. 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 3-iodpropene
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 3-iodpropene 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
3-iodpropene precautionary statements
CLP Annex VI assigns 10 precautionary statements to 3-iodpropene. 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
3-iodpropene 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 | 3-йодопропен алилйодид |
| Spanish español | 3-Yodopropeno yoduro de alilo |
| Czech čeština | 3-jodprop-1-en allyljodid |
| Danish dansk | 3-iodpropen allyliodid |
| German Deutsch | 3-Iodpropen Allyliodid |
| Estonian eesti | 3-jodopropene allüüljodiid |
| Greek ελληνικά | 3-ιωδοπροπένιο αλλυλιωδίδιο |
| English English | 3-iodpropene allyl iodide |
| French français | 3-iodopropène iodure d'allyle |
| Croatian hrvatski | 3-jodpropen alil-jodid |
| Italian italiano | 3-iodopropene ioduro di allile |
| Latvian latviešu | 3-jodpropēns aliljodīds |
| Lithuanian lietuvių | 3-jodpropenas alilo jodidas |
| Hungarian magyar | 3-jódpropén allil-jodid |
| Maltese Malti | 3-jodpropen jodur tal-allil |
| Dutch Nederlands | 3-joodpropeen allyljodide |
| Polish polski | 3-jodopropen jodek allilu |
| Portuguese português | 3-iodopropeno iodeto de alilo |
| Romanian română | 3-iodopropenă iodură de alil |
| Slovak slovenčina | 3-jódpropén alyljodid |
| Slovenian slovenščina | 3-jodopropen alil jodid |
| Finnish suomi | 3-jodipropeeni allyylijodidi |
| Swedish svenska | 3-jodpropen allyljodid |
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
3-iodpropene GHS label elements
Everything CLP Annex VI fixes for 3-iodpropene, laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Danger
3-iodpropene
- Highly flammable liquid and vapour.
- Causes severe skin burns and eye damage.
- Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
- Keep container tightly closed.
- Use explosion-proof [electrical/ventilating/lighting/…] equipment.
- Use only non-sparking tools.
- Do not breathe dust/fume/gas/mist/vapours/spray.
- Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/…
- IF SWALLOWED:
- Immediately call a POISON CENTER/doctor/…
- Do NOT induce vomiting.
- Store in a well-ventilated place.
Supplier name, address and telephone number· Product identifier·Nominal quantity
Need this as an actual label? Open 3-iodpropene in the GHS label constructor →
07 · Handling and storage
3-iodpropene storage and handling
3-iodpropene reactivity
ALLYL IODIDE is moderately reactive. Incompatible with strong oxidizing and reducing agents. Also, incompatible with many amines, nitrides, azo/diazo compounds, alkali metals, and epoxides.
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check 3-iodpropene in the storage compatibility matrix →
08 · Transport
3-iodpropene 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.
3-iodpropene under UN 1723 — shipping name, class and packing group
Europe · ADR 2025, Table A
| Proper shipping name (3.1.2) | Class | Classification code | PG | Labels (column 5) |
|---|---|---|---|---|
| ALLYL IODIDE | 3 | FC | II | |
Source: ADR 2025, Table A of Chapter 3.2 · ECE/TRANS/352 Vol. I (UNECE). Class 3 is “Flammable liquids” (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) |
|---|---|---|---|
| Allyl iodide | 3 | II | |
Source: 49 CFR 172.101 Hazardous Materials Table · eCFR, revision 2026-08-03. Class 3 is “Flammable and combustible liquid” (49 CFR 173.2).
09 · Questions
3-iodpropene — frequently asked questions
What is the CAS number of 3-iodpropene?
The CAS number of 3-iodpropene is 556-56-9. Its EC number is 209-130-4.
What does a 3-iodpropene label have to show?
Under CLP Annex VI the label for 3-iodpropene carries the pictograms Flame and Corrosion and the signal word is Danger.
Is 3-iodpropene flammable?
Yes. CLP Annex VI assigns 3-iodpropene H225 — highly flammable liquid and vapour.
Is 3-iodpropene a carcinogen?
CLP Annex VI records no harmonised carcinogenicity classification for 3-iodpropene. 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.
How should 3-iodpropene be stored?
CLP Annex VI assigns 3-iodpropene the storage statement P403.
Nearby
Substances next to 3-iodpropene
Keep going: substances starting with 0–9, or search the whole database by name, CAS number, pictogram or signal word.