Substance profile
Mesotrione
Mesotrione is a pale yellow solid with a faint pleasant odor.
01 · Identification
What Mesotrione is
Mesotrione is a pale yellow solid with a faint pleasant odor. Its molecular formula is C14H13NO7S and its molecular weight is 339.32 g/mol. It melts at 165 °C.
Under the GHS it carries the signal word Warning.
02 · Identifiers
Mesotrione identifiers and molecular data
Mesotrione CAS number and EC number
Mesotrione molecular formula and molecular weight
Other names for Mesotrione
- mesotrione (ISO)
- 2-[4-(methylsulfonyl)-2-nitrobenzoyl]-1,3-cyclohexanedione
03 · GHS classification
Mesotrione hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
Mesotrione pictograms and signal word
Mesotrione hazard class and category
| Hazard class | Category | From code | Pictogram |
|---|---|---|---|
| Specific target organ toxicity - repeated exposure GHS chapter 3.9 | Category 2 | H373 | GHS08 |
| 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 |
Mesotrione hazard statements (H-codes)
| Code | Hazard statement |
|---|---|
| H361d | Suspected of damaging the unborn child. |
| H373 | May cause damage to organs <or state all organs affected, if known> through prolonged or repeated exposure <state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard>. |
| H400 | Very toxic to aquatic life. |
| H410 | Very toxic to aquatic life with long lasting effects. |
This page lists only the codes assigned to Mesotrione. 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 Mesotrione
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 Mesotrione 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
Mesotrione precautionary statements
CLP Annex VI assigns 6 precautionary statements to Mesotrione. 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
Mesotrione 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 | месотрион (ISO) 2-[4-(метилсулфонил)-2-нитробензоил]-1,3-циклохександион |
| Spanish español | Mesotriona (ISO) 2-[4-(metilsulfonil)-2-nitrobenzoil]-1,3-ciclohexanodiona |
| Czech čeština | mesotrion (ISO) 2-[4-(methylsulfonyl)-2-nitrobenzoyl]-1,3-cyklohexandion |
| Danish dansk | mesotrion (ISO) 2-[4-(methylsulfonyl)-2-nitrobenzoyl]-1,3-cyclohexandion |
| German Deutsch | Mesotrione (ISO) 2-[4-(methylsulfonyl)-2-nitrobenzoyl]-1,3-cyclohexandion |
| Estonian eesti | Mesotrioon (ISO) 2-[4-(metüülsulfonüül)-2-nitrobensoüül]-1,3-tsükloheksaandioon |
| Greek ελληνικά | mesotrione (μεσοτριόνη) (ISO) 2-[4-(μεθυλοσουλφονυλο)-2-νιτροβενζοϋλο]-1,3-κυκλοεξανοδιόνη |
| English English | mesotrione (ISO) 2-[4-(methylsulfonyl)-2-nitrobenzoyl]-1,3-cyclohexanedione |
| French français | mésotrione (ISO) 2-[4-(méthylsulfonyl)-2-nitrobenzoyl]-1,3-cyclohexanedione |
| Croatian hrvatski | mezotrion (ISO) 2-[4-(metilsulfonil)-2-nitrobenzoil]-1,3-cikloheksandion |
| Italian italiano | mesotrione (ISO) 2-[4-(metilsolfonil)-2-nitrobenzoil]-1,3-cicloesanedione |
| Latvian latviešu | mezotrions (ISO) 2-[4-(metilsulfonil)-2-nitrobenzoil]-1,3-cikloheksāndions |
| Lithuanian lietuvių | mezotrionas (ISO) 2-[4-(metilsulfonil)-2-nitrobenzoil]-1,3-cikloheksandionas |
| Hungarian magyar | mezotrion (ISO) 2-[4-(metilszulfonil)-2-nitrobenzoil]-1,3-ciklohexándion |
| Maltese Malti | mesotrion (ISO) 2-[4-(metilsulfonil)-2-nitrobenżoil]-1,3-ċikloeżandion |
| Dutch Nederlands | mesotrione (ISO) 2-[4-(methylsulfonyl)-2-nitrobenzoyl]-1,3-cyclohexaandion |
| Polish polski | mezotrion (ISO) 2-[4-(metylosulfonylo)-2-nitrobenzoilo]-cykloheksano-1,3-dion |
| Portuguese português | mesotriona (ISO) 2-[4-(metilsulfonil)-2-nitrobenzoil]-1,3-ciclo-hexanodiona |
| Romanian română | mesotrion (ISO) 2-[4-(metilsulfonil)-2-nitrobenzoil]-1,3-ciclohexanedionă |
| Slovak slovenčina | mezotrión (ISO) 2-[4-(metylsulfonyl)-2-nitrobenzoyl]cyklohexán-1,3-dión |
| Slovenian slovenščina | mezotrion (ISO) 2-[4-(metilsulfonil)-2-nitrobenzoil]-1,3-cikloheksandion |
| Finnish suomi | mesotrioni (ISO) 2-[4-(metyylisulfonyyli)-2-nitrobentsoyyli)-1,3-sykloheksaanidioni |
| Swedish svenska | mesotrion (ISO) 2-[4-(metylsulfonyl)-2-nitrobensoyl]-1,3-cyklohexandion |
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
Mesotrione GHS label elements
Everything CLP Annex VI fixes for Mesotrione, laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Warning
Mesotrione
- Suspected of damaging the unborn child.
- May cause damage to organs <or state all organs affected, if known> through prolonged or repeated exposure <state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard>.
- 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.
- Avoid release to the environment.
- Get medical advice/attention if you feel unwell.
- Collect spillage.
- Dispose of contents/container to …
Supplier name, address and telephone number· Product identifier·Nominal quantity
Need this as an actual label? Open Mesotrione in the GHS label constructor →
07 · Health hazards
Mesotrione health hazards and exposure limits
Mesotrione hazard summary
May cause irritation; Targets the kidneys and liver; [MSDSonline]
Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
Mesotrione carcinogenicity classification
Cancer Classification: Not Likely to be Carcinogenic to Humans
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.
08 · Physical and chemical properties
Mesotrione 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.
Mesotrione melting point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Melting point | 165 °C (329 °F) | HSDB |
Mesotrione solubility
| Property | Value | Conditions | Source |
|---|---|---|---|
| Solubility | In water, (g/L at 20 °C): 2.2 (pH 4.8); 15 (pH 6.9); 22 (pH 9); 0.16 (unbuffered water) | at 20 °C | HSDB |
Mesotrione vapor pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor pressure | 42.6785 mmHg | below this value, at 20 °C | HSDB |
| 4e-8 mmHg | Haz-Map |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
09 · Source notes
Further notes on Mesotrione
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.
Solubility
Solubility in g/L at 20 °C): in acetonitrile 117.0, acetone 93.3, 1,2-dichloroethane 66.3, ethyl acetate 18.6, methanol 4.6, toluene 3.1, xylene 1.6, n-heptane <0.5
Source: HSDB
10 · Handling and storage
Mesotrione storage and handling
Mesotrione storage conditions
Can be stored as low as 20 °F.
Source: Hazardous Substances Data Bank (HSDB)
Mesotrione incompatible materials
Strong oxidizing agents
Source: Hazardous Substances Data Bank (HSDB)
Planning storage for a mix of chemicals? Check Mesotrione in the storage compatibility matrix →
11 · Questions
Mesotrione — frequently asked questions
What is the CAS number of Mesotrione?
The CAS number of Mesotrione is 104206-82-8.
What is the chemical formula of Mesotrione?
The molecular formula of Mesotrione is C14H13NO7S and its molecular weight is 339.32 g/mol.
What does a Mesotrione label have to show?
Under CLP Annex VI the label for Mesotrione carries the pictograms Health hazard and Environment and the signal word is Warning.
Is Mesotrione flammable?
CLP Annex VI assigns Mesotrione 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 Mesotrione a carcinogen?
CLP Annex VI records no harmonised carcinogenicity classification for Mesotrione. 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 Mesotrione?
The melting point reported for Mesotrione is 165 °C (329 °F) (HSDB).
How should Mesotrione be stored?
Can be stored as low as 20 °F. (Hazardous Substances Data Bank (HSDB))
Nearby
Substances next to Mesotrione
Keep going: substances starting with M, or search the whole database by name, CAS number, pictogram or signal word.