Substance profile
Alpha-Cypermethrin
Alpha-Cypermethrin is a viscous yellowish brown semisolid mass.
01 · Identification
What Alpha-Cypermethrin is
Alpha-Cypermethrin is a viscous yellowish brown semisolid mass. Its molecular formula is C22H19Cl2NO3 and its molecular weight is 416.3 g/mol. It melts at 79.5 °C.
Under the GHS it carries the signal word Danger.
02 · Identifiers
Alpha-Cypermethrin identifiers and molecular data
Alpha-Cypermethrin CAS number and EC number
Alpha-Cypermethrin molecular formula and molecular weight
Other names for Alpha-Cypermethrin
- α-cypermethrin (ISO)
- racemate comprising (R)-α-cyano-3-phenoxybenzyl (1S,3S)-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylate
- (S)-α-cyano-3-phenoxybenzyl (1R,3R)-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylate
03 · GHS classification
Alpha-Cypermethrin hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
Alpha-Cypermethrin pictograms and signal word
Alpha-Cypermethrin hazard class and category
| Hazard class | Category | From code | Pictogram |
|---|---|---|---|
| Acute toxicity - oral GHS chapter 3.1 | Category 3 | H301 | GHS06 |
| Specific target organ toxicity - single exposure GHS chapter 3.8 | Category 3 | H335 | GHS07 |
| 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 |
Alpha-Cypermethrin hazard statements (H-codes)
| Code | Hazard statement |
|---|---|
| H301 | Toxic if swallowed. |
| H335 | May cause respiratory irritation. |
| 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 Alpha-Cypermethrin. 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 Alpha-Cypermethrin
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 Alpha-Cypermethrin 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
Alpha-Cypermethrin precautionary statements
CLP Annex VI assigns 9 precautionary statements to Alpha-Cypermethrin. 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
Alpha-Cypermethrin 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 | α-циперметрин (ISO) рацемат, включващ ( R )-3-фенокси-α-цианобензилов (1 S ,3 S )-3-(2,2-дихлоровинил)-2,2-диметилциклопропанкарбоксилат( S )-3-фенокси-α-цианобензилов (1 R ,3 R )-3-(2,2-дихлоровинил)-2,2-диметилциклопропанкарбоксилат |
| Spanish español | α-Cipermetrina (ISO) mezcla racémica de (1 S ,3 S )-3-(2,2-diclorovinil)-2,2-dimetilciclopropanocarboxilato de ( R )-α-ciano-3-fenoxibencilo y (1 R , 3 R )-3-(2,2-diclorovinil)-2,2-dimetilciclopropanocarboxilato de ( S )-α-ciano-3-fenoxibencilo |
| Czech čeština | α-cypermethrin (ISO) racemát obsahující ( R )-[(3-fenoxyfenyl)kyanmethyl]-(1 S ,3 S )-3-(2,2-dichlorvinyl)-2,2-dimethylcyklopropan-1-karboxylát( S )-[(3-fenoxyfenyl)kyanmethyl]-(1 R ,3 R )-3-(2,2-dichlorvinyl)-2,2- dimethylcyklopropan-1-karboxylát |
| Danish dansk | α-cypermethrin (ISO) racemat bestående af ( R )-α-cyan-3-phenoxybenzyl-(1 S ,3 S )-3-(2,2-dichlorvinyl)-2,2-dimethylcyclopropancarboxylat og ( S )-α-cyan-3-phenoxybenzyl-(1 R ,3 R )-3-(2,2-dichlorvinyl)-2,2-dimethylcyclopropancarboxylat |
| German Deutsch | α-Cypermethrin (ISO) Racemat mit ( R )-α-Cyano-3-phenoxybenzyl-(1 S ,3 S )-3-(2,2-dichlorvinyl)-2,2-dimethylcyclopropancarboxylat( S )-α-Cyano-3-phenoxybenzyl(1 R ,3 R )-3-(2,2-dichlorvinyl)-2,2-dimethylcyclopropancarboxylat |
| Estonian eesti | α-tsüpermetriin (ISO) ratsemaat, mis koosneb järgmisest: ( R )-α-tsüano-3-fenoksübensüül-(1 S ,3 S )-3-(2,2-diklorovinüül)-2,2-dimetüültsüklopropaankarboksülaat( S )-α-tsüano-3-fenoksübensüül-(1 R ,3 R )-3-(2,2-diklorovinüül)-2,2-dimetüültsüklopropaankarboksülaat |
| Greek ελληνικά | α-cypermethrin (α-κυπερμεθρίνη) (ISO) ρακεμικό μίγμα από (1 S ,3 S )-3-(2,2-διχλωροβινυλο)-2,2-διμεθυλοκυκλοπροπανοκαρβοξυλικό ( R )-α-κυανο-3-φαινοξυβενζύλιο(1 R ,3 R )-3-(2,2-διχλωροβινυλο)-2,2-διμεθυλοκυκλοπροπανοκαρβοξυλικό ( S )-α-κυανο-3-φαινοξυβενζύλιο |
| English English | α-cypermethrin (ISO) racemate comprising ( R )-α-cyano-3-phenoxybenzyl (1 S ,3 S )-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylate( S )-α-cyano-3-phenoxybenzyl(1 R , 3 R )-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylate |
| French français | α-cyperméthrine (ISO) racémate composé de (1 S ,3 S )-3-(2,2-dichlorovinyl)-2,2-diméthylcyclopropanecarboxylate de ( R )-α-cyano-3-phénoxybenzyle et (1 R , 3 R )-3-(2,2-dibromovinyl)-2,2-diméthylcyclopropanecarboxylate de ( S )-α-cyano-3-phénoxybenzyle |
| Croatian hrvatski | α-cipermetrin (ISO) racemat koji sadržava ( R )-α-cijano-3-fenoksibenzil(1 S ,3 S )-3-(2,2-diklorvinil)-2,2-dimetilciklopropankarboksilat( S )-α-cijano-3-fenoksibenzil(1 R ,3 R )-3-(2,2-diklorvinil)-2,2-dimetilciklopropankarboksilat |
| Italian italiano | α-cipermetrina (ISO) racemo comprendente: ( R )-α-ciano-3-fenossibenzil-(1 S ,3 S )-3-(2,2-diclorovinil)-2,2-dimetilciclopropancarbossilato)-2,2-dimetilciclopropancarbossilato( S )-α-ciano-3-fenossibenzil-(1 R ,3 R )-3-(2,2-diclorovinil)-2,2-dimetilciclopropancarbossilato |
| Latvian latviešu | α-cipermetrīns (ISO) racemāts, kuru veido ( R )-α-ciān-3-fenoksibenzil-(1 S ,3 S )-3-(2,2-dihlorvinil)-2,2-dimetilciklopropānkarboksilāts( S )-α-ciān-3-fenoksibenzil-(1 R ,3 R )-3-(2,2-dibromvinil)-2,2-dimetilciklopropānkarboksilāts |
| Lithuanian lietuvių | α-cipermetrinas (ISO) racematas, sudarytas iš ( R )-α-ciano-3-fenoksibenzil-(1 S ,3 S )-3-(2,2-dichlorvinil)-2,2-dimetilciklopropankarboksilato( S )-α-ciano-3-fenoksibenzil-(1 R ,3 R )-3-(2,2-dichlorvinil)-2,2-dimetilciklopropankarboksilato |
| Hungarian magyar | α-cipermetrin (ISO) ( R )-α-ciano-3-fenoxibenzil-(1 S ,3 S )-3-(2,2-diklórvinil)-2,2-dimetilciklopropánkarboxilátot és ( S )-α-ciano-3-fenoxibenzil-(1 R ,3 R )-3-(2,2-diklórvinil)-2,2-dimetilciklopropánkarboxilátot tartalmazó racém elegy |
| Maltese Malti | α-ċipermetrin (ISO) raċemat magħmul minn ( R )-α-ċjano-3-fenossibenżil (1 S ,3 S )-3-(2,2-diklorovinil)-2,2-dimetilċiklopropanekarbossilat( S )-α-ċjano-3-fenossibenżil(1 R , 3 R )-3-(2,2-diklorovinil)-2,2-dimetilċiklopropanekarbossilat |
| Dutch Nederlands | α-cypermethrin (ISO) een racemaat bestaande uit ( R )-α-cyaan-3-fenoxybenzyl-(1 S ,3 S )-3-(2,2-dichloorvinyl)-2,2-dimethylcyclopropaancarboxylaat( S )-α-cyaan-3-fenoxybenzyl(1 R ,3 R )-3-(2,2-dichloorvinyl)-2,2-dimethylcyclopropaancarboxylaat |
| Polish polski | alfa-cypermetryna (ISO) (racemat zawierający (1 S ,3 S )-3-(2,2-dichlorowinylo)-2,2-dimetylocyklopropanokarboksylan ( R )-α-cyjano-3-fenoksybenzylu(1 R ,3 R )-3-(2,2-dichlorowinylo)-2,2-dimetylocyklopropanokarboksylan ( S )-α-cyjano-3-fenoksybenzylu)(1RS,3RS)-3-(2,2-dichlorowinylo)-2,2-dimetylocyklopropano-karboksylan (RS)- a-cyjano-3-fenoksybenzylu) |
| Portuguese português | α-cipermetrina (ISO) mistura racémica de: (1 S ,3 S )-3-(2,2-diclorovinil)-2,2-dimetilciclopropanocarboxilato de ( R )-α-ciano-3-fenoxibenziloe (1 R ,3 R )-3-(2,2-diclorovinil)-2,2-dimetilciclopropanocarboxilato de ( S )-α-ciano-3-fenoxibenzilo |
| Romanian română | α-cipermetrin (ISO) amestec racemic care conține ( R )-α-ciano-3-fenoxibenzil (1 S ,3 S )-3-(2,2-diclorovinil)-2,2-dimetilciclopropancarboxilat(1 R ,3 R )-3-(2,2-diclorovinil)-2,2-dimetilciclopropancarboxilat de( S )-α-ciano-3-fenoxibenzil |
| Slovak slovenčina | α-cypermetrín racemát obsahujúci O -[( R )-(3- fenoxyfenyl)(kyano)metyl]-(1 S ,3 S )-3-(2,2-dichlóretenyl)-2,2- dimetylcyklopropánkarboxylátO -[( S )-(3-fenoxyfenyl)(kyano)metyl]- (1 R ,3 R )-3-(2,2-dichlóretenyl)-2,2- dimetylcyklopropánkarboxylát |
| Slovenian slovenščina | α-cipermetrin (ISO) racemat, ki vsebuje ( R )-α-ciano-3-fenoksibenzil (1 S ,3 S )-3-(2,2-diklorovinil)-2,2-dimetilciklopropankarboksilat( S )-α-ciano-3-fenoksibenzil (1 R ,3 R )-3-(2,2-diklorovinil)-2,2-dimetilciklopropankarboksilat |
| Finnish suomi | α-sypermetriini (ISO) rasemaatti, joka sisältää seuraavia: (R)-α-syano-3-fenoksibentsyyli-(1 S ,3 S )-3-(2,2-dikloorivinyyli)-2,2-dimetyylisyklopropaanikarboksylaatti( S )-α-syano-3-fenoksibentsyyli (1 R ,3 R )-3-(2,2-dikloorivinyyli)-2,2-dimetyylisyklopropaanikarboksylaatti |
| Swedish svenska | α-cypermetrin (ISO) racemat omfattande ( R )-α-cyano-3-fenoxibensyl(1 S ,3 S )-3-(2,2-diklorvinyl)-2,2-dimetylcyklopropankarboxylat( S )-α-cyano-3-fenoxibensyl(1 R ,3 R )-3-(2,2-diklorvinyl)-2,2-dimetylcyklopropankarboxylat |
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
Alpha-Cypermethrin GHS label elements
Everything CLP Annex VI fixes for Alpha-Cypermethrin, laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Danger
Alpha-Cypermethrin
- Toxic if swallowed.
- May cause respiratory irritation.
- 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.
- IF SWALLOWED:
- Immediately call a POISON CENTER/doctor/…
- Get medical advice/attention 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 Alpha-Cypermethrin in the GHS label constructor →
07 · Health hazards
Alpha-Cypermethrin health hazards and exposure limits
Alpha-Cypermethrin hazard summary
Some technical formulations are strong eye irritants; Toxic neurological effects observed in high dose oral studies with rats include peripheral nerve injury; No significant adverse effects were observed from 90-day oral study with rats receiving 60 mg/kg; [HSDB] A respiratory tract irritant; [eChemPortal: ESIS] Effects in high-dose animal studies include liver changes, ataxia, and convulsions; [RTECS] Same ADI for alpha-Cypermethrin and Cypermethrin; [JECFA] See Cypermethrin. See Pyrethrum.
Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
08 · Physical and chemical properties
Alpha-Cypermethrin 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.
Alpha-Cypermethrin boiling point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | 200 °C (392 °F) | at 0.07 mmHg (reduced pressure) | HSDB |
Alpha-Cypermethrin melting point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Melting point | 79.5 °C (175.1 °F) | range, midpoint shown | HSDB |
Alpha-Cypermethrin density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Density | 1.28 g/cm³ | at 20 °C | HSDB |
Alpha-Cypermethrin solubility
| Property | Value | Conditions | Source |
|---|---|---|---|
| Solubility | Soluble in chloroform, methylene chloride, and toluene; slightly soluble in petroleum ether and methanol. | HSDB | |
| In water, 0.01 mg/l @ 25 °C. | at 25 °C | HSDB |
Alpha-Cypermethrin vapor pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor pressure | 0.0000173 mmHg | at 20 °C | HSDB |
| 1.7e-7 mmHg | Haz-Map |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
09 · Source notes
Further notes on Alpha-Cypermethrin
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
In acetone 620, dichloromethane 550, cyclohexane 515, ethyl acetate 440, chlorobenzene 420, acetophenone 390, o-xylene 350, hexane 7 (all in g/l, 25 °C). In maize oil 19-20, ethylene glycol <1 (both in g/kg at 20 °C).
Source: HSDB
10 · Handling and storage
Alpha-Cypermethrin storage and handling
Alpha-Cypermethrin storage conditions
Pyrethrins with piperonyl butoxide topical preparations should be stored in well-closed containers at a temperature less than 40 °C, preferably between 15-30 °C. /Pyrethrins/
Source: Hazardous Substances Data Bank (HSDB)
Alpha-Cypermethrin incompatible materials
Incompatibility: Strong oxidizers. /Pyrethrins/
Source: Hazardous Substances Data Bank (HSDB)
Planning storage for a mix of chemicals? Check Alpha-Cypermethrin in the storage compatibility matrix →
11 · Questions
Alpha-Cypermethrin — frequently asked questions
What is the CAS number of Alpha-Cypermethrin?
The CAS number of Alpha-Cypermethrin is 67375-30-8. Its EC number is 257-842-9.
What is the chemical formula of Alpha-Cypermethrin?
The molecular formula of Alpha-Cypermethrin is C22H19Cl2NO3 and its molecular weight is 416.3 g/mol.
What does a Alpha-Cypermethrin label have to show?
Under CLP Annex VI the label for Alpha-Cypermethrin carries the pictograms Skull and crossbones, Health hazard and Environment and the signal word is Danger.
Is Alpha-Cypermethrin flammable?
CLP Annex VI assigns Alpha-Cypermethrin 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 Alpha-Cypermethrin a carcinogen?
CLP Annex VI records no harmonised carcinogenicity classification for Alpha-Cypermethrin. 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 Alpha-Cypermethrin?
The boiling point reported for Alpha-Cypermethrin is 200 °C (392 °F), at 0.07 mmHg (reduced pressure) (HSDB).
What is the melting point of Alpha-Cypermethrin?
The melting point reported for Alpha-Cypermethrin is 79.5 °C (175.1 °F), range, midpoint shown (HSDB).
How should Alpha-Cypermethrin be stored?
Pyrethrins with piperonyl butoxide topical preparations should be stored in well-closed containers at a temperature less than 40 °C, preferably between 15-30 °C. /Pyrethrins/ (Hazardous Substances Data Bank (HSDB))
Nearby
Substances next to Alpha-Cypermethrin
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