1,3-Dichloropropene: California Opens Comments on Draft Annual Report
California DPR released its draft 2025 report on October 16; comments close November 30, 2026. Affected air-monitoring data were excluded following a laboratory-data recall.
On October 16, California’s Department of Pesticide Regulation released its draft annual 1,3-dichloropropene report for 2025. The public-comment period runs through November 30, 2026.
DPR says affected air-monitoring results were excluded after the California Department of Food and Agriculture recalled data because a laboratory reference standard had significantly degraded. The draft includes a modeled assessment for Parlier, with further evaluation of five other monitoring locations planned.
Relevance to our products — editorial assessment: the announcement is directly relevant to the regulatory discussion around 1,3-dichloropropene, including interest in mixed and trans grades. It is a draft-report consultation, not an announcement of a new product approval or a new blanket ban.
Possible Market Impact: Next 1–3 Months
Outlook for the next 1–3 months: United States, especially California — buyers of mixed and trans 1,3-dichloropropene may scrutinize regulatory developments and product documentation more closely, potentially extending purchasing decisions.
The draft report alone does not establish a fall in consumption, a new blanket ban or increased demand in other countries. There is insufficient evidence in this announcement to forecast price or demand changes in Europe or Brazil.
Source: California DPR — original announcement (2026-10-16)
Related products: Mixed 1,3-dichloropropene · Trans 1,3-dichloropropene · 1,2-dichloropropane · Allyl chloride
The outlook reflects internal-meeting inferences of Zibo Yixiao Trading Co., Ltd.; actual outcomes may differ. 淄博怡潇经贸公司内部会议推断，不是绝对性的情况。