Pyridalyl ピリダリル
Other insecticides: Classes that fit none of the above (phenylpyrazoles, pyridine azomethines and others).
In Japan
- Registration
- Registered as a pesticide (first registered August 6, 2004). 5 formulated products contain it.
- Main registered crops
- cabbage, napa cabbage, lettuce, daikon radish, eggplant, tomato and others (72 crop names in the registered uses)
- Toxicity class
- Active ingredient: Ordinary substanceClasses of the 5 formulated products (diluted products sold): ordinary substance 4, deleterious substance 1Classes under Japan's Poisonous and Deleterious Substances Control Act.
- ADI (acceptable daily intake)
- 0.028 mg per kg of body weight per day
- ARfD (acute reference dose)
- not necessary to set
- Evaluation
- Food Safety Commission of Japan, May 18, 2022
ADI: the amount considered to have no effect on health even if eaten every day for a lifetime. ARfD: the amount considered to have no effect on health when eaten at one time (within 24 hours). Both are set by the Food Safety Commission of Japan, mainly from animal studies.
In Japan's national residue testing (fiscal 2024)
| Produce | Detected / tested | Detection rate | Over the limit |
|---|---|---|---|
| Domestic | 3 / 275 | 1.1% | 0 |
| ImportedNo. 15 by detection rate | 45 / 1,229 | 3.7% | 0 |
Found in domestic foods: eggplant, asparagus, cabbage (max. 0.063 ppm)
Found in imported foods: other nightshade (Solanaceae) vegetables, tomato, bell pepper, wheat (max. 0.28 ppm)
Tests are counted as pesticide × sample. Any detection counts as “detected” — it does not mean the limit was exceeded. For pesticides outside the top 20, figures are summed from the food-by-food tables of the full report.
In the Consumer Affairs Agency's market basket survey (fiscal 2024; the amount actually taken in from everyday meals), intake was 0.022–0.309% of the ADI.
Evaluations abroad
- WHO acute toxicity class
- Not listed in the WHO 2019 tablesBased on the toxicity of the undiluted active ingredient given once, mainly to rats by mouth (LD50 = the dose that kills half; the smaller, the stronger the acute toxicity). It is not an assessment of the safety of residues in food.
- EU
- Not approved in the EU (approval ended June 2024)EU ADI: 0.03 mg/kg bw/day; ARfD: —
- IARC (carcinogenicity)
- No matching entry in the IARC list (not evaluated or out of scope, including Group 3)
Related explainers
Sources
- FAMIC (Food and Agricultural Materials Inspection Center), pesticide registration information (as of Sept. 30, 2026) (Japanese)
- Food Safety Commission of Japan, risk assessment report on Pyridalyl (May 18, 2022) (Japanese)
- MHLW, results of pesticide residue testing in foods, fiscal 2024 (Japanese)
- Consumer Affairs Agency, daily intake survey of pesticide residues in foods, fiscal 2024 (Japanese)
- EU Pesticides Database (Pyridalyl)
Last checked 2026-10-01. Registrations and evaluations change over time. This page is a translation of our Japanese page; if they differ, the Japanese page is the reference.