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lambda-Cyhalothrin

CAS 91465-08-6 · 20/100 · High conf.

Also registered as 1 other CAS number

96777-99-0

Concern score

20/100Minor concern based on regulatory listings.
High confidence

lambda-Cyhalothrin in plain language

What it is

Also known as .lambda.-cyhalothrin · .lambda.-cyhalothrin, (±)- · Lambdacyhalothrin · .lambda.-cialotrina · .lambda.-cyhalothrin, (+/-)- · A 12871A

Show all 51 names

Ambush super · Cyonara · Cyhalothrin K · Lambda Cyhalothrin · Cyhalothrin, Lambda epimer R157836 · Cyhalothrin, Total (Cyhalothrin-L + R157836 epimer) · Demand · Demand pestab · Grenade er · Hallmark · Ici-a 0321 · Icon · Icon maxx · Karate 1E · Karate 2.5EC · Karate k · Karate king · Karate z · Karate zeon · Karate zeon 050CS · Karate zeon 100CS · Kung fu · Karate · Lamdex · Lamtox · Matador · Matador (insecticide) · Molniya · Nup 05077 · Oxyfly · Pp 321 · Reeva 5 · Saber · Scimitar · Spectracide trazicide · Spectracide triazicide soil & turf insect killer · Taiga z · Warrior · Warrior ii · Warrior t · Warrior zeon · cyhalothrin · lambda-cyhalothrin (active ingredient) · lambda-cyhalothrin technical · λ-Cyhalothrin

What it does

Used in consumer products as an antimicrobial.

  • Antimicrobial
Is it a concern?
Minor concern: no hazard classifications on record.

Why it's flagged

EPA CPDat observed this chemical in 12 composition records across product categories including Pesticides.

The score describes this ingredient's chemical identity — its hazard profile from published classifications and regulatory status — not the safety of any product it appears in.

Regulation

No restrictions found. lambda-Cyhalothrin appears in these published regulatory listings.

Recorded in these product areas

  • Found in consumer products
  • Industrial
  • EUEFSAConclusion on Pesticides Peer Review2 entries
    • Conclusion on the peer review of the pesticide risk assessment of the active substance lambda-cyhalothrin (EFSA)Source →
    • Conclusion on the peer review of the pesticide risk assessment of the active substance gamma-cyhalothrin (EFSA)Source →
  • USEPAcommercial use observedEPA CPDat observed this chemical in 12 composition records across product categories including Pesticides. EPA CPDat classifies this chemical for functional uses including Biocide, Cyhalothrin-L + R157836 epimer, includes gamma isomer.
    • EPA CPDat observed this chemical in 12 composition records across product categories including Pesticides. EPA CPDat classifies this chemical for functional uses including Biocide, Cyhalothrin-L + R157836 epimer, includes gamma isomer.Source →
  • USFDAlisted in openFDA substanceopenFDA substance registry classifies this ingredient as chemical.
    • openFDA substance registry classifies this ingredient as chemical.Source →

Expert safety opinions

Independent scientific assessments cited by the records we hold, with the year and link where the record gives one.

  • JECFA

    Joint FAO/WHO Expert Committee on Food Additives

    No JECFA evaluation on file.

  • EFSA

    European Food Safety Authority

    • Conclusion on the peer review of the pesticide risk assessment of the active substance lambda-cyhalothrin (EFSA)

      2014 · EU EFSA listing · Read the source →

    • Conclusion on the peer review of the pesticide risk assessment of the active substance gamma-cyhalothrin (EFSA)

      2014 · EU EFSA listing · Read the source →

Evidence & sources

No graded research studies for lambda-Cyhalothrin yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.

5 data sources

Where this comes from

  • EFSA OpenFoodTox

    regulatory · updated 2026-10-04

    Open →
  • EPA Chemical and Products Database

    exposure · updated November 2016

    Open →
  • EPA DSSTox Identifiers

    chemistry · updated 2025-12-29

    Open →
  • FDA GSRS UNII

    registry · updated 2026-02-26

    Open →
  • openFDA Substance

    registry · updated 2026-05-24

    Open →

Suitability

Context-specific fit derived from published classifications and the current ingredient evidence profile.

Food use

Food-use source coverage is present in the current record.

Good fit

The ingredient appears in food-oriented source coverage or allowed-use references, which makes food use easier to support than a context with no domain signal at all.

Fragrance avoidance

No fragrance-linked caution surfaced in the current profile.

Good fit

This ingredient does not currently read as a fragrance-linked driver in the published evidence and hazard profile.

Where it has been recorded

How often EPA CPDat has listed lambda-Cyhalothrin in a product composition. These are source records, not Greenveil catalog products.

Source records

12

Named organisations

6

Pesticides

Typical roles

Antimicrobial
See products using lambda-Cyhalothrin →

Catalog

Found in these products

Their ingredient lists include lambda-Cyhalothrin; each product's own rating depends on its whole formula, so it is shown on the product page, not here.