Substance Data

Chemical Substances Information

CAS RN MITI Number Chemical Substance Name Chemical Structure
123-31-9 3-543 Hydroquinone


Regulatory Classification

Regulatory Classification Cabinet Order No./Registration No. Chemical Substance Name date Remarks
Priority Assessment Chemical Substances (PACSs)  203  Hydroquinone  2016/04/01   
Existing chemical substances  -  Dihydroxybenzene     
Type II Monitoring Chemical Substances (before amendment in FY 2009)  1072  Hydroquinone  2010/04/01   


Screening Info

Publication year Human health effect Ecological effect Detailed assessment by experts Remarks
Exposure Class Hazard Class Priority Exposure Class Hazard Class Priority
2016 5 - - 5 - - Assessment has been conducted by the serial number of Type II Monitoring Chemical Substance (before amendment).
2015 5 2 Medium 5 1 Medium Result of detailed assessment by experts on ecological 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).
2014 5 - - Out of classification - - Assessment has been conducted by the serial number of Type II Monitoring Chemical Substance (before amendment).
2013 5 - - 5 - - Assessment has been conducted by the serial number of Type II Monitoring Chemical Substance (before amendment).
2012 5 - - 5 - - Assessment has been conducted by the serial number of Type II Monitoring Chemical Substance (before amendment).
2010 5 2 Medium - - - Assessment has been conducted by the serial number of Type II Monitoring Chemical Substance (before amendment).


Remarks


Information of Priority Assessment Chemical Substance

Information of designation

Classification Designated date No. MITI No. Name of Priority Assessment Chemical Substance Rationale for designation Remarks
PACS  2016/04/01  203  3-543  Hydroquinone 
Human health effect:
Ecological effect:X
detailed assessment by experts for:Ecological effect and Concentration in the environment


No. 203

Risk Assessment Phase 1-I

publication date Status of risk assessment publication source Remarks
2019/04/01 Risk Assessment Phase 1-I (ecological effect)

Risk Assessment Phase 1-Ⅱ, 1-Ⅲ

publication date Status of risk assessment publication source Remarks
2023/04/01 Risk Assessment Phase 1-II (ecological effect)
2022/04/01 Risk Assessment Phase 1-II (ecological effect)
2021/04/01 Risk Assessment Phase 1-II (ecological effect)
2020/04/01 Risk Assessment Phase 1-II (ecological effect)






Other information

The list of high priority chemicals

CAS RN Chemical Substance Name(Reference) International Status of Collection Plan and report of sponsors Remarks
123-31-9 hydroquinone OECD HPV Program Assessed

Manufactured and/or imported quantities

Fiscal year MITI Number Registration No. Chemical Substance Name Classification Manufactured and/or imported quantities (t) Remarks
2021 3-543 203 Hydroquinone Priority Assessment Chemical Substances (PACSs) 14,405
2020 3-543 203 Hydroquinone Priority Assessment Chemical Substances (PACSs) 11,971
2019 3-543 203 Hydroquinone Priority Assessment Chemical Substances (PACSs) 14,789
2018 3-543 203 Hydroquinone Priority Assessment Chemical Substances (PACSs) 14,718
2017 3-543 203 Hydroquinone Priority Assessment Chemical Substances (PACSs) 12,340
2016 3-543 203 Hydroquinone Priority Assessment Chemical Substances (PACSs) 11,738
2015 3-543 Dihydroxybenzene General chemical substance 30,000 - < 40,000
2014 3-543 Dihydroxybenzene General chemical substance 40,000 - < 50,000
2013 3-543 Dihydroxybenzene General chemical substance 10,000 - < 20,000
2012 3-543 Dihydroxybenzene General chemical substance 10,000 - < 20,000


Published information

publication source publication date Chemical Substance Name Published Result Judgement Remarks
Official Bulletin of Ministry of International Trade and Industry 1975/08/27 hydroquinone Chemical substance determinated to be ready biodegradable




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