Substance profile
Resmethrin
Resmethrin is a waxy off-white to tan solid with a chrysanthemate odor.
01 · Identification
What Resmethrin is
Resmethrin is a waxy off-white to tan solid with a chrysanthemate odor. Its molecular formula is C22H26O3 and its molecular weight is 338.4 g/mol. It boils at 180 °C, melts at 56.5 °C.
Under the GHS it carries the signal word Warning. It is classed as teratogens.
02 · Identifiers
Resmethrin identifiers and molecular data
Resmethrin CAS number and EC number
Resmethrin molecular formula and molecular weight
Other names for Resmethrin
- resmethrin (ISO)
- 5-benzyl-3-furylmethyl (±)-cis-trans-chrysanthemate
03 · GHS classification
Resmethrin hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
Resmethrin pictograms and signal word
Resmethrin hazard class and category
| Hazard class | Category | From code | Pictogram |
|---|---|---|---|
| Acute toxicity - oral GHS chapter 3.1 | Category 4 | H302 | 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 |
Resmethrin hazard statements (H-codes)
| Code | Hazard statement |
|---|---|
| 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 Resmethrin. 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 Resmethrin
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 Resmethrin 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
Resmethrin precautionary statements
CLP Annex VI assigns 7 precautionary statements to Resmethrin. 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
Resmethrin 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 | ресметрин (ISO) 5-бензил-3-фурилметилов (±)- цис - транс -хризантемат |
| Spanish español | Resmetrina (ISO) (±)- cis-trans -crisantemato de 5-bencil-3-furilmetilo |
| Czech čeština | resmethrin (ISO) [(5-benzyl-3-furyl)methyl]-chrysanthemát |
| Danish dansk | resmethrin (ISO) 5-benzyl-3-furylmethyl (±)- cis - trans -chrysanthemat |
| German Deutsch | Resmethrin (ISO) 5-Benzyl-3-furylmethyl (±)- cis -transchrysanthemat |
| Estonian eesti | resmetriin (ISO) 5-bensüül-3-furüülmetüül-(±)- cis - trans -krüsantemaat |
| Greek ελληνικά | resmethrin (ρεσμεθρίνη) (ISO) (±)- cis-trans -χρυσανθεμικός 5-βενζυλο-3-φουρυλομεθυλεστέρας |
| English English | resmethrin (ISO) 5-benzyl-3-furylmethyl (±)-cis-trans-chrysanthemate |
| French français | resméthrine (ISO) (±)-cis-trans-chrysanthémate de 5-benzyl-3-furylméthyle |
| Croatian hrvatski | rezmetrin (ISO) 5-benzil-3-furilmetil (±)-cis-trans-krizantemat |
| Italian italiano | resmetrina (ISO) (5-benzil-3-furil)metil (±)- cis - trans -crisantemato |
| Latvian latviešu | rezmetrīns (ISO) 5-benzil-3-furilmetil (±)- cis - trans -krizantemāts |
| Lithuanian lietuvių | resmetrinas (ISO) 5-benzil-3-furilmetil-(±)-cis-trans-chrizantematas |
| Hungarian magyar | rezmetrin (ISO) 5-benzil-3-furilmetil (±)- cisz - transz -krizantemát |
| Maltese Malti | resmetrin (ISO) (±)-cis-trans-krisantemat ta’ 5-benżil-3-furilmetil |
| Dutch Nederlands | resmethrin (ISO) 5-benzyl-3-furylmethyl-(±)- cis - trans -chrysanthemaat |
| Polish polski | resmetryna (ISO) (1 RS )- cis , trans -2,2-dimetylo-3-(2-metyloprop-1-enylo)cyklopropanokarboksylan (5-benzylo-3-furylo)metylu |
| Portuguese português | resmetrina (ISO) (±)- cis , trans -crisantemato de 5-benzil-3-furilmetilo |
| Romanian română | resmetrin (ISO) (±)- cis-trans -crisantemat de 5-benzil-3-furilmetil |
| Slovak slovenčina | rezmetrín (ISO) O -[(5-benzyl-3-furyl)metyl]-(±)-cis-trans-2,2-dimetyl-3-(2-metylprop-1-én-1-yl)cyklopropánkarboxylát |
| Slovenian slovenščina | resmetrin (ISO) 5-benzil-3-furilmetil (±)-cis-trans-krizantemat |
| Finnish suomi | resmetriini (ISO) 5-bentsyyli-3-furyylimetyyli-(±)-cis- trans-krysantemaatti |
| Swedish svenska | resmetrin (ISO) 5-bensyl-3-furylmetyl (±)- cis - trans -krysantemat |
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
Resmethrin GHS label elements
Everything CLP Annex VI fixes for Resmethrin, laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Warning
Resmethrin
- Harmful if swallowed.
- Very toxic to aquatic life.
- Very toxic to aquatic life with long lasting effects.
- Do not eat, drink or smoke when using this product.
- Avoid release to the environment.
- IF SWALLOWED:
- Call a POISON CENTER/doctor/… if you feel unwell.
- Rinse mouth.
- Collect spillage.
- Dispose of contents/container to …
Supplier name, address and telephone number· Product identifier·Nominal quantity
Need this as an actual label? Open Resmethrin in the GHS label constructor →
07 · Health hazards
Resmethrin health hazards and exposure limits
Resmethrin hazard summary
A synthetic pyrethroid; [Merck Index] A skin and eye irritant; [ICSC] May cause eye irritation and skin rash; [HSDB] Effects in high-dose animal studies include convulsions; [RTECS] All risk concerns for occupational handlers that mix, load, and/or apply resmethrin can be mitigated with personal protective equipment (PPE). [EPA REDs] See Pyrethrum.
Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
Resmethrin carcinogenicity classification
Cancer Classification: 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
Resmethrin 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.
Resmethrin boiling point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | 180 °C (356 °F) | above this value | HSDB |
Resmethrin melting point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Melting point | 56.5 °C (133.7 °F) | HSDB | |
| 45.5 °C (113.9 °F) | range, midpoint shown | HSDB |
Resmethrin density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Density | 0.96 g/cm³ | ICSC | |
| 0.963 g/cm³ | range, midpoint shown, at 20 °C | HSDB |
Resmethrin solubility
| Property | Value | Conditions | Source |
|---|---|---|---|
| Solubility | Very sol in xylene and aromatic petroleum hydrocarbons; solubility in kerosene 10% | HSDB | |
| In water, 0.0379 mg/L at 25 °C | at 25 °C | HSDB |
Resmethrin vapor pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor pressure | 1.13e-8 mmHg | at 30 °C | HSDB |
| 1e-8 mmHg | Haz-Map | ||
| Vapor pressure, Pa at 20 °C: | at 20 °C | ICSC |
Resmethrin corrosivity
| Property | Value | Conditions | Source |
|---|---|---|---|
| Corrosivity | Non-corrosive | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
09 · Fire and explosion
Resmethrin 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.
Resmethrin fire potential
Liquid formulations containing organic solvents may be flammable.
Source: Hazardous Substances Data Bank (HSDB)
Solubility
Insol in water at 25 °C; methylene chloride at 25 °C: greater than 50% wt/wt; in acetone at 25 °C: greater than 50% wt/wt; in ethanol and isopropanol 8 and 7%, /respectively/
Source: HSDB
10 · Handling and storage
Resmethrin storage and handling
Resmethrin safe storage
Provision to contain effluent from fire extinguishing.
Source: ILO-WHO International Chemical Safety Cards (ICSCs)
Resmethrin storage conditions
... /Store/ under dry conditions.
Source: Hazardous Substances Data Bank (HSDB)
Resmethrin incompatible materials
Incompatibility: Strong oxidizers. /Pyrethrins/
Source: Hazardous Substances Data Bank (HSDB)
Resmethrin reactivity
A pyrethroid derivative.
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check Resmethrin in the storage compatibility matrix →
11 · Questions
Resmethrin — frequently asked questions
What is the CAS number of Resmethrin?
The CAS number of Resmethrin is 10453-86-8. Its EC number is 233-940-7.
What is the chemical formula of Resmethrin?
The molecular formula of Resmethrin is C22H26O3 and its molecular weight is 338.4 g/mol.
What does a Resmethrin label have to show?
Under CLP Annex VI the label for Resmethrin carries the pictograms Exclamation mark and Environment and the signal word is Warning.
Is Resmethrin flammable?
CLP Annex VI assigns Resmethrin 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 Resmethrin a carcinogen?
CLP Annex VI records no harmonised carcinogenicity classification for Resmethrin. 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 Resmethrin?
The boiling point reported for Resmethrin is 180 °C (356 °F), above this value (HSDB).
What is the melting point of Resmethrin?
The melting point reported for Resmethrin is 56.5 °C (133.7 °F) (HSDB).
How should Resmethrin be stored?
... /Store/ under dry conditions. (Hazardous Substances Data Bank (HSDB))
Nearby
Substances next to Resmethrin
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