Pesticide databaseFumigants and soil disinfectantsChecked 2026-10-01
1,3-Dichloropropene D-D（1,3-ジクロロプロペン）
Soil disinfectantsRegistered in JapanActive ingredient: deleterious substanceWHO FMUnder review in the EUIARC 2B
Soil disinfectants: Spread gas through the soil before planting to reduce nematodes and pathogens.
In Japan
- Registration
- Registered as a pesticide (first registered March 10, 1950). 8 formulated products contain it.
- Main registered crops
- ginger, burdock root, Welsh onion, tomato, cherry tomato, daikon radish and others (78 crop names in the registered uses)
- Toxicity class
- Active ingredient: Deleterious substanceClasses of the 8 formulated products (diluted products sold): deleterious substance 8Classes under Japan's Poisonous and Deleterious Substances Control Act.
- ADI (acceptable daily intake)
- 0.025 mg per kg of body weight per day
- ARfD (acute reference dose)
- 0.2 mg per kg of body weight
- Evaluation
- Food Safety Commission of Japan, March 7, 2024
- Note
- The evaluation of 2026-08-27 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.
Evaluations abroad
- WHO acute toxicity class
- FM (Fumigant (not classified))Based 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
- Under review in the EUEU ADI: 1,3-Dichloropropene=0.0125 mg/kg bw/day; ARfD: 1,3-Dichloropropene=0.2 mg/kg bw1,3-Dichloropropene=Pending / 1,3-Dichloropropene (cis)=Not approved
- IARC (carcinogenicity)
- Group 2B (possibly carcinogenic to humans)1,3-Dichloropropene (technical-grade): Vol. 41, Suppl. 7, 71 (evaluated 1998)IARC classifications rate the strength of evidence that something can cause cancer, not the size of the risk at the amounts eaten in food.
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 1,3-Dichloropropene (March 7, 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 (1,3-Dichloropropene / 1,3-Dichloropropene (cis))
- IARC (International Agency for Research on Cancer) List of Classifications
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.