Pesticide databaseFungicidesChecked 2026-10-01
Thifluzamide チフルザミド
SDHI: Stop another step of fungal respiration (succinate dehydrogenase).
In Japan
- Registration
- Registered as a pesticide (first registered December 22, 1997). 17 formulated products contain it.
- Main registered crops
- rice (paddy), Western lawn grass, Japanese lawn grass, flooded direct-seeded paddy rice, potato, soybean and others (7 crop names in the registered uses)
- Toxicity class
- Active ingredient: Ordinary substanceClasses of the 17 formulated products (diluted products sold): ordinary substance 17Classes under Japan's Poisonous and Deleterious Substances Control Act.
- ADI (acceptable daily intake)
- 0.014 mg per kg of body weight per day
- ARfD (acute reference dose)
- 0.25 mg per kg of body weight
- Evaluation
- Food Safety Commission of Japan, November 1, 2023
- Note
- The evaluation of 2025-04-23 falls under Article 11, paragraph 1, item 2 of the Food Safety Basic Act (no ADI or ARfD stated). The values are those in the DB.
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 | 0 / 2,703 | 0.0% | 0 |
| Imported | 0 / 670 | 0.0% | 0 |
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.
Evaluations abroad
- WHO acute toxicity class
- U (Unlikely to present acute hazard in normal use), LD50 >5000 mg/kgBased 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 in the EU database
- 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 Thifluzamide (November 1, 2023) (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)
- WHO Recommended Classification of Pesticides by Hazard 2019
- EU Pesticides Database
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.
Pesticides registered in Japan are approved by the government with set crops, amounts, numbers of applications and days before harvest. This page lists facts stated in laws and in evaluations by public bodies; it does not judge whether anything is good or bad.