Substance profile
2-methyl-4-oxo-3-(penta-2,4-dienyl)cyclopent-2-enyl [1R-[1α[S*(Z)],3β]]-chrysanthemate
2-methyl-4-oxo-3-(penta-2,4-dienyl)cyclopent-2-enyl [1R-[1α[S*(Z)],3β]]-chrysanthemate is a viscous liquid.
01 · Identification
What 2-methyl-4-oxo-3-(penta-2,4-di… is
2-methyl-4-oxo-3-(penta-2,4-dienyl)cyclopent-2-enyl [1R-[1α[S*(Z)],3β]]-chrysanthemate is a viscous liquid. Its molecular formula is C21H28O3 and its molecular weight is 328.4 g/mol. It is soluble in water.
Under the GHS it carries the signal word Warning.
02 · Identifiers
2-methyl-4-oxo-3-(penta-2,4-di… identifiers and molecular data
2-methyl-4-oxo-3-(penta-2,4-di… CAS number and EC number
2-methyl-4-oxo-3-(penta-2,4-di… molecular formula and molecular weight
Other names for 2-methyl-4-oxo-3-(penta-2,4-di…
- pyrethrin I
03 · GHS classification
2-methyl-4-oxo-3-(penta-2,4-di… hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
2-methyl-4-oxo-3-(penta-2,4-di… pictograms and signal word
2-methyl-4-oxo-3-(penta-2,4-di… hazard class and category
| Hazard class | Category | From code | Pictogram |
|---|---|---|---|
| Acute toxicity - oral GHS chapter 3.1 | Category 4 | H302 | GHS07 |
| Acute toxicity - dermal GHS chapter 3.1 | Category 4 | H312 | GHS07 |
| Acute toxicity - inhalation GHS chapter 3.1 | Category 4 | H332 | GHS07 |
| Hazardous to the aquatic environment - acute GHS chapter 4.1 | Category 1 | H400 | GHS09 |
| Hazardous to the aquatic environment - chronic GHS chapter 4.1 | Category 1 | H410 | GHS09 |
2-methyl-4-oxo-3-(penta-2,4-di… hazard statements (H-codes)
| Code | Hazard statement |
|---|---|
| H332 | Harmful if inhaled. |
| H312 | Harmful in contact with skin. |
| H302 | Harmful if swallowed. |
| H400 | Very toxic to aquatic life. |
| H410 | Very toxic to aquatic life with long lasting effects. |
This page lists only the codes assigned to 2-methyl-4-oxo-3-(penta-2…. 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 2-methyl-4-oxo-3-(penta-2…
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 2-methyl-4-oxo-3-(pent… 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
2-methyl-4-oxo-3-(penta-2,4-di… precautionary statements
CLP Annex VI assigns 13 precautionary statements to 2-methyl-4-oxo-3-(penta-2…. 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.
Disposal
What has to happen to the contents and the empty container.
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
2-methyl-4-oxo-3-(penta-2,4-di… 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 | 2-метил-4-оксо-3-(пента-2,4-диенил)циклопент-2-енилов [1 R -[1α[ S *( Z )],3β]]хризантемат пиретрин I |
| Spanish español | [1 R -[1α[ S *( Z )],3β]]-Crisantemato de 2-metil-4-oxo-3-(penta-2,4-dienil)ciclopent-2-enilo piretrina I |
| Czech čeština | [2-methyl-4-oxo-3-(( Z )-penta-2,4-dien-1-yl)cyklopent-2-en-1-yl]-2,2-dimethyl-3-(2-methylprop-1-en-1-yl)cyklopropan-1-karboxylát pyrethrin I |
| Danish dansk | 2-methyl-4-oxo-3-(penta-2,4-dienyl)cyclopent-2-enyl [1 R -[1α[ S *( Z )],3β]]-chrysanthemat pyrethrin I |
| German Deutsch | 2-Methyl-4-oxo-3-(penta-2,4- dienyl)cyclopent-2-enyl[1 R -[1α[ S *( Z )], 3β]]chrysanthemat Pyrethrin I |
| Estonian eesti | 2-metüül-4-okso-3-(penta-2,4-dienüül)tsüklopent-2-enüül-[1 R -[1α[ S *( Z )],3β]]-krüsantemaat püretriin I |
| Greek ελληνικά | 2-μεθυλ-4-οξο-3-(πεντα-2,4-διενυλο)κυκλοπεντ-2-ενυλο[1 R - [1α[ S *( Z )],3β]]-χρυσανθεμικό πυρεθρίνη Ι |
| English English | 2-methyl-4-oxo-3-(penta-2,4- dienyl)cyclopent-2-enyl [1 R - [1α[ S *( Z )],3β]]-chrysanthemate pyrethrin I |
| French français | [1 R - [1α[ S *( Z )],3β]]-chrysanthémate de 2-méthyl-4-oxo-3-(penta-2,4- diényl)cyclopent-2-ényle pyréthrine I |
| Croatian hrvatski | 2-metil-4-okso-3-(penta-2,4-dienil)ciklopent-2-enil [1 R -[1α[ S *( Z )],3β]]-krizantemat piretrin I |
| Italian italiano | [1 R -[1α[ S *( Z )],3β]]-crisantemato di 2-metil-4-osso-3-(penta-2,4-dienil)ciclopent-2-enile piretrina I |
| Latvian latviešu | 2-metil-4-okso-3-(penta-2,4-dienil)ciklopent-2-enil [1 R - [1α[ S *( Z )],3β]]-krizantemāts piretrīns I |
| Lithuanian lietuvių | 2-metil-4-okso-3-(penta-2,4-dienil)ciklopent-2-enil[1 R -[1α[ S *( Z )](3β)]]-chrizantematas piretrinas I |
| Hungarian magyar | 2-metil-4-oxo-3-(penta-2,4-dienil)ciklopent-2-enil[1R-[1α[S*(Z)],3β]]-krizantemát piretrin I |
| Maltese Malti | 2-metil-4-osso-3-(penta-2,4- dienil)ċiklopent-2-enil [1 R - [1α[ S *( Z )],3β]]-chrysanthemate pyrethrin I |
| Dutch Nederlands | 2-methyl-4-oxo-3-(penta-2,4-diënyl)cyclopent-2-enyl[1 R -[1α[ S *( Z )],3β]]-chrysanthemaat pyrethrine I |
| Polish polski | (1 R ,3 R )-2,2-dimetylo-3-(2-metyloprop-1-en-1-ylo)cyklopropanokarboksylan ( Z )-( S )-2-metylo-4-okso-3-(penta-2,4-dien-1-ylo)cyklopent-2-en-1-ylu pyretryna I |
| Portuguese português | [1 R -[1α[S*( Z )],3β]]-crisantemato de 2-metil-4-oxo-3-(penta-2,4-dienil)ciclopent-2-enilo piretrina I |
| Romanian română | [1 R -[1α [ S *( Z )],3β]]-crizantemat de 2-metil-4-oxo-3-(penta-2,4-dienil) ciclopent-2-enil piretrine I |
| Slovak slovenčina | O -{2-metyl-4-oxo-3-[( Z )-penta-2,4-dién-1-yl]cyklopent-2-enyl}-((1 R )-{1α[ S *( Z )],3β]}-2,2-dimetyl-3-(2-metylprop-1-én-1-yl)cyklopropánkarboxylát pyretrín I |
| Slovenian slovenščina | 2-metil-4-okso-3-(penta-2,4-dienil)ciklopent-2-enil [1 R -[1α[ S *( Z )],3β]]-krizantemat piretrin I |
| Finnish suomi | 2-metyyli-4-okso-3-(penta-2,4-dienyyli)syklopent-2-enyyli[1 R -[1α[ S *( Z )],3β]]-krysantemaatti pyretriini I |
| Swedish svenska | 2-metyl-4-oxo-3-(penta-2,4-dienyl)cyklopent-2-enyl[1 R -[1α[ S *( Z )],3β]]-krysantemat pyretrin I |
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
2-methyl-4-oxo-3-(penta-2,4-di… GHS label elements
Everything CLP Annex VI fixes for 2-methyl-4-oxo-3-(penta-2…, laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Warning
2-methyl-4-oxo-3-(penta-2,4-di…
- Harmful if inhaled.
- Harmful in contact with skin.
- Harmful if swallowed.
- Very toxic to aquatic life.
- Very toxic to aquatic life with long lasting effects.
- Do not breathe dust/fume/gas/mist/vapours/spray.
- Do not eat, drink or smoke when using this product.
- Use only outdoors or in a well-ventilated area.
- Avoid release to the environment.
- Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/…
- IF SWALLOWED:
- IF ON SKIN:
- IF INHALED:
- Call a POISON CENTER/doctor/… if you feel unwell.
- Rinse mouth.
- Wash with plenty of water/…
- Collect spillage.
- Dispose of contents/container to …
Supplier name, address and telephone number· Product identifier·Nominal quantity
Need this as an actual label? Open 2-methyl-4-oxo-3-(penta-2… in the GHS label constructor →
07 · Health hazards
2-methyl-4-oxo-3-(penta-2,4-di… health hazards and exposure limits
2-methyl-4-oxo-3-(penta-2,4-di… carcinogenicity classification
Cancer Classification: Suggestive Evidence of Carcinogenicity but Not Sufficient to Assess Human Carcinogenic Potential /Pyrethrins/
Source: Hazardous Substances Data Bank (HSDB)
An IARC group and a CLP classification answer different questions. IARC judges whether the evidence for cancer in humans is strong enough; CLP Annex VI is the legally binding EU classification. A substance can carry one and not the other.
2-methyl-4-oxo-3-(penta-2,4-di… occupational exposure limits
| Limit | Value | Source |
|---|---|---|
| IDLH | 5000 mg/cu m /Pyrethrum/ | Hazardous Substances Data Bank (HSDB) |
These are United States values. The European Union sets its own indicative and binding limits, and the figure that applies at a given workplace is the one in the local regulation — not the one shown here.
08 · Physical and chemical properties
2-methyl-4-oxo-3-(penta-2,4-di… 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.
2-methyl-4-oxo-3-(penta-2,4-di… boiling point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | 148 °C (298.4 °F) | range, midpoint shown, at 0.0005 mmHg (reduced pressure) | HSDB |
| 170 °C (338 °F) | decomposes, at 0.1 mmHg (reduced pressure) | HSDB |
2-methyl-4-oxo-3-(penta-2,4-di… density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Density | 1.5192 g/cm³ | at 18 °C | HSDB |
2-methyl-4-oxo-3-(penta-2,4-di… solubility
| Property | Value | Conditions | Source |
|---|---|---|---|
| Solubility | Soluble in kerosene, ethylene dichloride, nitromethane. | HSDB | |
| Soluble in ethanol, ethyl ether, carbon tetrachloride, petroleum ether | HSDB | ||
| In water, 0.2 mg/L (temperature not specified) | HSDB |
2-methyl-4-oxo-3-(penta-2,4-di… vapor pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor pressure | 0.0000203 mmHg | DOE PAC | |
| 0.0000203 mmHg | at 25 °C | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
09 · Handling and storage
2-methyl-4-oxo-3-(penta-2,4-di… storage and handling
2-methyl-4-oxo-3-(penta-2,4-di… storage conditions
Should be refrigerated and stored in darkness.
Source: Hazardous Substances Data Bank (HSDB)
2-methyl-4-oxo-3-(penta-2,4-di… incompatible materials
... Incompatible with lime and ordinary soaps because acids & alkalies speed up processes of hydrolysis. /Pyrethrins/
Source: Hazardous Substances Data Bank (HSDB)
Planning storage for a mix of chemicals? Check 2-methyl-4-oxo-3-(penta-2… in the storage compatibility matrix →
10 · Questions
2-methyl-4-oxo-3-(penta-2,4-di… — frequently asked questions
What is the CAS number of 2-methyl-4-oxo-3-(penta-2,4-di…?
The CAS number of 2-methyl-4-oxo-3-(penta-2,4-di… is 121-21-1. Its EC number is 204-455-8.
What is the chemical formula of 2-methyl-4-oxo-3-(penta-2,4-di…?
The molecular formula of 2-methyl-4-oxo-3-(penta-2,4-di… is C21H28O3 and its molecular weight is 328.4 g/mol.
What does a 2-methyl-4-oxo-3-(penta-2,4-di… label have to show?
Under CLP Annex VI the label for 2-methyl-4-oxo-3-(penta-2,4-di… carries the pictograms Exclamation mark and Environment and the signal word is Warning.
Is 2-methyl-4-oxo-3-(penta-2,4-di… flammable?
CLP Annex VI assigns 2-methyl-4-oxo-3-(penta-2,4-di… 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 2-methyl-4-oxo-3-(penta-2,4-di… a carcinogen?
CLP Annex VI records no harmonised carcinogenicity classification for 2-methyl-4-oxo-3-(penta-2,4-di…. 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 boiling point of 2-methyl-4-oxo-3-(penta-2,4-di…?
The boiling point reported for 2-methyl-4-oxo-3-(penta-2,4-di… is 148 °C (298.4 °F), range, midpoint shown, at 0.0005 mmHg (reduced pressure) (HSDB).
How should 2-methyl-4-oxo-3-(penta-2,4-di… be stored?
Should be refrigerated and stored in darkness. (Hazardous Substances Data Bank (HSDB))
Nearby
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