Substance profile
Benomyl
Benomyl is a white crystalline solid with a faint, acrid odor.
01 · Identification
What Benomyl is
Benomyl is a white crystalline solid with a faint, acrid odor. Its molecular formula is C14H18N4O3 and its molecular weight is 290.32 g/mol. It melts at 300 °C.
Under the GHS it carries the signal word Danger. It is classed as teratogens.
02 · Identifiers
Benomyl identifiers and molecular data
Benomyl CAS number and EC number
Benomyl molecular formula and molecular weight
Other names for Benomyl
- benomyl (ISO)
- methyl 1-(butylcarbamoyl)benzimidazol-2-ylcarbamate
03 · GHS classification
Benomyl hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
Benomyl pictograms and signal word
Benomyl hazard class and category
| Hazard class | Category | From code | Pictogram |
|---|---|---|---|
| Skin corrosion/irritation GHS chapter 3.2 | Category 2 | H315 | GHS07 |
| Skin sensitisation GHS chapter 3.4 | Category 1 or 1A or 1B | H317 | GHS07 |
| Germ cell mutagenicity GHS chapter 3.5 | Category 1A or 1B | H340 | GHS08 |
| Specific target organ toxicity - single exposure GHS chapter 3.8 | Category 3 | H335 | 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 |
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.
Benomyl hazard statements (H-codes)
| Code | Hazard statement |
|---|---|
| H340 | May cause genetic defects <state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard>. |
| H360FD | May damage fertility. May damage the unborn child. |
| H335 | May cause respiratory irritation. |
| H315 | Causes skin irritation. |
| H317 | May cause an allergic skin reaction. |
| H400 | Very toxic to aquatic life. |
| H410 | Very toxic to aquatic life with long lasting effects. |
This page lists only the codes assigned to Benomyl. 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 Benomyl
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 Benomyl 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
Benomyl precautionary statements
CLP Annex VI assigns 14 precautionary statements to Benomyl. 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
Benomyl 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 | беномил (ISO) метилов 1-(бутилкарбамоил)бензимидазол-2-илкарбамат |
| Spanish español | Benomilo (ISO) 1-(butilcarbamoil)benzimidazol-2-ilcarbamato de metilo |
| Czech čeština | benomyl (ISO) methyl- N -[1-(butylkarbamoyl)benzimidazol-2-yl]karbamát |
| Danish dansk | benomyl (ISO) methyl-1-(butylcarbamoyl)benzimidazol-2-ylcarbamat |
| German Deutsch | Benomyl (ISO) Methyl-1-(butylcarbamoyl)benzimidazol-2-ylcarbamat |
| Estonian eesti | benomüül (ISO) metüül-1-(butüülkarbamoüül)bensimidasool-2-üülkarbamaat |
| Greek ελληνικά | benomyl (μπενομύλη) (ISO) 1-(βουτυλοκαρβαμοϋλο)βενζιμιδαζολ-2-υλοκαρβαμιδικός μεθυλεστέρας |
| English English | benomyl (ISO) methyl 1-(butylcarbamoyl)benzimidazol-2-ylcarbamate |
| French français | bénomyl (ISO) 1-(butylcarbamoyl)benzimidazol-2-ylcarbamate de méthyle |
| Croatian hrvatski | benomil (ISO) metil 1-(butilkarbamoil)benzimidazol-2-ilkarbamat |
| Italian italiano | benomil (ISO) 1-(butilcarbammoil)benzimidazol-2-ilcarbammato di metile |
| Latvian latviešu | benomils (ISO) metil-1-(butilkarbamoil)benzimidazol-2-ilkarbamāts |
| Lithuanian lietuvių | benomilas (ISO) metil-1-(butilkarbamoil)benzimidazol-2-ilkarbamatas |
| Hungarian magyar | benomil (ISO) metil-1-(butilkarbamoil)benzimidazol-2-il-karbamát |
| Maltese Malti | benomil (ISO) 1-(butilkarbamojl)benżimidażol-2-ilkarbamat tal-metil |
| Dutch Nederlands | benomyl (ISO) methyl-1-(butylcarbamoyl)benzimidazool-2-ylcarbamaat |
| Polish polski | benomyl (ISO) 1-(butylokarbamoilo)benzoimidazol-2-ilokarbaminian metylu |
| Portuguese português | benomil (ISO) 1-(butilcarbamoil)benzimidazol-2-ilcarbamato de metilo |
| Romanian română | benomil (ISO) 1-(butilcarbamoil) benzimidazol-2-il carbamat de metil |
| Slovak slovenčina | benomyl (ISO) metyl-[1-(butylkarbamoyl)benzimidazol-2-yl]karbamát |
| Slovenian slovenščina | benomil (ISO) metil 1-(butilkarbamoil)benzimidazol-2-ilkarbamat |
| Finnish suomi | benomyyli (ISO) metyyli-1-(butyylikarbamoyyli)bentsimidatsol-2-yylikarbamaatti |
| Swedish svenska | benomyl (ISO) metyl-1-(butylkarbamoyl)bensimidazol-2-ylkarbamat |
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
Benomyl GHS label elements
Everything CLP Annex VI fixes for Benomyl, laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Danger
Benomyl
- May cause genetic defects <state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard>.
- May damage fertility. May damage the unborn child.
- May cause respiratory irritation.
- Causes skin irritation.
- May cause an allergic skin reaction.
- Very toxic to aquatic life.
- Very toxic to aquatic life with long lasting effects.
- Obtain special instructions before use.
- Avoid breathing dust/fume/gas/mist/vapours/spray.
- Wash … thoroughly after handling.
- Contaminated work clothing should not be allowed out of the workplace.
- Avoid release to the environment.
- Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/…
- IF ON SKIN:
- IF exposed or concerned:
- Get medical advice/attention.
- If skin irritation occurs:
- If skin irritation or rash occurs:
- 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 Benomyl in the GHS label constructor →
07 · Health hazards
Benomyl health hazards and exposure limits
Benomyl carcinogenicity classification
Cancer Classification: Group C Possible Human Carcinogen
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.
Benomyl occupational exposure limits
| Limit | Value | Source |
|---|---|---|
| PEL | 15.0 [mg/m3](total dust), 5 mg/m3(respirable fraction) | Haz-Map, Information on Hazardous Chemicals and Occupational Diseases |
| PEL | 15 mg/m³ (total dust), 5 mg/m³ (respirable fraction) | Occupational Safety and Health Administration (OSHA) |
| PEL | TWA 15 mg/m3 (total) TWA 5 mg/m3 (resp) See Appendix G | The National Institute for Occupational Safety and Health (NIOSH) |
| IDLH | N.D. | The National Institute for Occupational Safety and Health (NIOSH) |
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
Benomyl 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.
Benomyl boiling point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | Decomposes | decomposes | NIOSH |
| Decomposes (NTP, 1992) | decomposes | CAMEO | |
| decomposes | decomposes | OSHA |
Benomyl melting point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Melting point | 300 °C (572 °F) | above this value | NIOSH |
| 140 °C (284 °F) | decomposes, decomposes | HSDB |
Benomyl density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Density | 0.38 g/cm³ | ICSC |
Benomyl solubility
| Property | Value | Conditions | Source |
|---|---|---|---|
| Solubility | 0.0004% | NIOSH | |
| In water 3.8 ppm @ 20 °C. | at 20 °C | HSDB | |
| Solubility (25 °C): 18 g/kg acetone; 94 g/kg chloroform; 53 g/kg dimethylformamide; 4 g/kg ethanol; 0.4 g/kg heptane; 10 g/kg xylene. | at 25 °C | HSDB |
Benomyl vapor pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor pressure | 3.7e-9 mmHg | at 25 °C | HSDB |
| 0.00001 mmHg | below this value | NIOSH |
Benomyl autoignition temperature
| Property | Value | Conditions | Source |
|---|---|---|---|
| Autoignition temperature | 220 °C (428 °F) | CAMEO |
Benomyl lower explosive limit (LEL)
| Property | Value | Conditions | Source |
|---|---|---|---|
| Lower explosive limit (LEL) | LEL= 0.05 g/litre in air | From table | HSDB |
| Noncombustible Solid | NIOSH | ||
| 0.05 g/L (NTP, 1992) | CAMEO |
Benomyl corrosivity
| Property | Value | Conditions | Source |
|---|---|---|---|
| Corrosivity | NON-CORROSIVE TO METALS | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
09 · Handling and storage
Benomyl storage and handling
Benomyl safe storage
Separated from food and feedstuffs. Dry. Well closed. Store in an area without drain or sewer access. Provision to contain effluent from fire extinguishing.
Source: ILO-WHO International Chemical Safety Cards (ICSCs)
Benomyl storage conditions
Decomposed on storage in contact with water... .
Source: Hazardous Substances Data Bank (HSDB)
Benomyl incompatible materials
Incompatible with alkaline materials.
Source: Hazardous Substances Data Bank (HSDB)
Benomyl reactivity
BENOMYL is incompatible with strong acids, peroxides and strong oxidizers. Decomposed by strong alkalis. Also decomposes on storage with water (NTP, 1992).
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check Benomyl in the storage compatibility matrix →
10 · Questions
Benomyl — frequently asked questions
What is the CAS number of Benomyl?
The CAS number of Benomyl is 17804-35-2. Its EC number is 241-775-7.
What is the chemical formula of Benomyl?
The molecular formula of Benomyl is C14H18N4O3 and its molecular weight is 290.32 g/mol.
What does a Benomyl label have to show?
Under CLP Annex VI the label for Benomyl carries the pictograms Health hazard, Exclamation mark and Environment and the signal word is Danger.
Is Benomyl flammable?
CLP Annex VI assigns Benomyl 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 Benomyl a carcinogen?
CLP Annex VI records no harmonised carcinogenicity classification for Benomyl. 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 exposure limit for Benomyl?
The US occupational exposure limit reported for Benomyl is 15.0 [mg/m3](total dust), 5 mg/m3(respirable fraction) (Haz-Map, Information on Hazardous Chemicals and Occupational Diseases). Limits differ by country: the EU sets its own indicative and binding values, and the figure that applies at a given workplace is the one in the local regulation.
What is the boiling point of Benomyl?
The boiling point reported for Benomyl is Decomposes, decomposes (NIOSH).
What is the melting point of Benomyl?
The melting point reported for Benomyl is 300 °C (572 °F), above this value (NIOSH).
How should Benomyl be stored?
Decomposed on storage in contact with water... . (Hazardous Substances Data Bank (HSDB))
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