Japan CHEmicals Collaborative Knowledge database

• Information
• About J-CHECK
• Update history

• Search
• Chemical Substances
   Search

• Act on the Evaluation of
        Chemical Substances and
        Regulation of Their
        Manufacture, etc.
        (after amendment
        in FY 2009)
• Class I Specified
   Chemical Substances
• Class II Specified
   Chemical Substances
• Monitoring
   Chemical Substances
• Priority Assessment
   Chemical Substances
   (PACSs)
• Canceled
   - Priority Assessment
   Chemical Substances
• Specified General
   Chemical Substances

• Newly Announced
        Chemical Substances
• Newly Announced
   Chemical Substances
    (notified on and after
    April 1, 2011)
• Newly Announced
   Chemical Substances
    (notified by March 31,
    2011)

• Existing
        Chemical Substances
• Existing Chemical
   Substances

• Act on the Evaluation of
        Chemical Substances and
        Regulation of Their
        Manufacture, etc.(before
        amendment in FY 2009)
• Type II Monitoring
   Chemical Substances
   (before amendment
    in FY 2009)
• Type III Monitoring
   Chemical Substances
   (before amendment
    in FY 2009)
• For Class I Specified
   Chemical Substances,
   Class II Specified
   Chemical Substances,
   and Type I Monitoring
   Chemical Substances
   (before amendment
    in FY 2009),
   see (after amendment
    in FY 2009)

• Exempt
        from notification of
        manufacturing/
        import amount      
• Exempt from notification of
    manufacturing/import
    amount

• Related information to Act
        on the Evaluation of
        Chemical Substances and
        Regulation of Their
        Manufacture, etc.
• Recent Progress of CSCL
  
• Designated Products under CSCL
  

• Evaluation information
        (Evaluation summary
        sheet)
• Evaluation information
   (Evaluation summary
   sheet)

• The Japan HPV
        Challenge Program
• The list of high priority
   chemicals
• About Japan HPV
   Challenge Program

• Useful Information
        and Links
• Useful Information and
   Links

About J-CHECK

J-CHECK is a database developed to provide the information regarding "Act on the Evaluation of Chemical Substances and Regulation of 
Their Manufacture, etc. "(commonly known as "CSCL") by the authorities of the law, Ministry of Health, Labour and Welfare, Ministry of Economy, Trade and 
Industry, and Ministry of the Environment.

J-CHECK provides the information regarding CSCL, such as the list of CSCL, chemical safety information obtained in the existing chemicals 
survey program, risk assessment, etc. in cooperation with eChemPortal by OECD.

[Instructions]
J-CHECK User's Manual (March 19, 2021 Ver.2.2)
Reference materials on combinations of CAS Registry Numbers and MITI Numbers

Video version of Operation Manual(March 26, 2021)　← (Japanese only)

What's New

The following data have been updated. (December 17, 2025) 
- Combinations of MITI number and CAS RN

For the detailed information on chemical substances that have been added, revised, or deleted, please refer to the following list.

List

Disclaimer

Aiming to keep the content of this site accurate and up to date, NITE makes no warranties or representations regarding the quality, accuracy, 
completeness or reliability of information on the site.

NITE shall not be responsible for the accuracy, reliability or currency of any information on this site nor for any claims, damages or 
losses resulting from their use.

NITE reserves the right, at our discretion, to change, modify, add to, or remove portions of information on this site at any time without notice.

The accuracy and linkage of association between CASRN and MITI number is not reviewed nor confirmed.

Please take note that Chemical Substance Names are translated by NITE and confirm from Original Chemical Names(in Japanese) for yourself.

System requirements

Operating Systems:
-Windows 10, 11

Web Browser:
-Microsoft Edge

Contact us

Chemical Information Infrastucture Division, Chemical Management Center, NITE
2-49-10, Nishihara, Shibuya-ku, Tokyo 151-0066, Japan
Tex. +81-3-3481-1999  Fax. +81-3-3481-2900

Ministry of Health, Labour and Welfare
TEL：+81-3-5253-1111(pilot number)

Ministry of Economy, Trade and Industry
TEL：+81-3-3501-0605(direct line)

Ministry of the Environment
Chemicals Evaluation Office, Environmental Health Department
TEL：+81-3-3581-3351(ex.6333)

Contact us
https://www.nite.go.jp/cgi-bin/contact/?cid=00000130&lang=1

Copyright

Use of information on this site, please take into consideration "A Concept Regarding the Use of Information Obtained through 
the Existing Chemicals Survey Program Conducted by the Japanese Government". 
"Ministry of Health, Labour and Welfare", "Ministry of the Environment" and 
"National Institute of Technology and Evaluation". All Rights Reserved.

https://www.meti.go.jp/policy/chemical_management/english/files/concept_regarding_the_use_of_information.pdf