| Regulatory Classification | Cabinet Order No./Registration No. | Chemical Substance Name | date | Remarks | 
    | Canceled - Priority Assessment Chemical Substances | 14 | 1,3-Dichloropropene (synonym: D-D) | 2017/03/30 |  | 
    | Existing chemical substances | - | 1,3-Dichloropropene |  |  | 
    | Type III Monitoring Chemical Substances (before amendment in FY 2009) | 164 | 1,3-Dichloropropene (synonym: D-D) | 2010/03/19 |  | 
    | Designated (before amendment) | 381 | 1,3-Dichloropropene (synonym: D-D) | 2000/09/22 |  | 
    
        | Publication year | Human health effect | Ecological effect | Detailed assessment by experts | Remarks | 
    
        | Exposure Class | Hazard Class | Priority | Exposure Class | Hazard Class | Priority | 
    
        | 2023 | Out of classification | 2 | Out of classification | Out of classification | 1 | Out of classification |  | Assessment has been conducted by the serial number of Canceled - Priority Assessment Chemical Substances. | 
    
        | 2022 | Out of classification | 2 | Out of classification | Out of classification | 1 | Out of classification |  | Assessment has been conducted by the serial number of Canceled - Priority Assessment Chemical Substances. | 
    
        | 2021 | Out of classification | 2 | Out of classification | Out of classification | 1 | Out of classification |  | Assessment has been conducted by the serial number of Canceled - Priority Assessment Chemical Substances. | 
    
        | 2020 | Out of classification | 2 | Out of classification | Out of classification | 1 | Out of classification |  | Assessment has been conducted by the serial number of Canceled - Priority Assessment Chemical Substances. | 
    
        | 2019 | Out of classification | 2 | Out of classification | Out of classification | 1 | Out of classification |  | Assessment has been conducted by the serial number of Canceled - Priority Assessment Chemical Substances. | 
    
        | 2018 | Out of classification | 2 | Out of classification | Out of classification | 1 | Out of classification |  | Assessment has been conducted by the serial number of Canceled - Priority Assessment Chemical Substances. | 
    
        | 2010 | 4 | 2 | Medium | 4 | 1 | High | Result of detailed assessment by experts on human health effect, it has been selected as Priority Assessment Chemical Substances (PACSs). | Assessment has been conducted by the serial number of Type II Monitoring Chemical Substance (before amendment) and the serial number of Type III Monitoring Chemical Substance (before amendment). | 
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