Pesticide databaseFungicidesChecked 2026-10-01
Thiram チウラム
Multi-site fungicides: Act on many sites in fungal cells. Resistance is slow to develop (mancozeb, TPN, captan and others).
In Japan
- Registration
- Registered as a pesticide (first registered October 29, 1951). 22 formulated products contain it.
- Main registered crops
- rice (paddy), Western lawn grass, apple, soybean, wheat, peach and others (75 crop names in the registered uses)
- Toxicity class
- Active ingredient: Ordinary substanceClasses of the 22 formulated products (diluted products sold): ordinary substance 20, deleterious substance 2Classes under Japan's Poisonous and Deleterious Substances Control Act.
- ADI (acceptable daily intake)
- No risk assessment report by the Food Safety Commission of Japan was found
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.
Evaluations abroad
- WHO acute toxicity class
- II (Moderately hazardous), LD50 560 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 approved in the EU (approval ended October 2018)EU ADI: 0.01 mg/kg bw/day; ARfD: 0.025 mg/kg bw
- 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)
- WHO Recommended Classification of Pesticides by Hazard 2019
- EU Pesticides Database (Thiram)
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.