Substance Data

Chemical Substances Information

CAS RN MITI Number Chemical Substance Name Chemical Structure
107-46-0 2-2956 Disiloxane, hexamethyl-


Regulatory Classification

Regulatory Classification Cabinet Order No./Registration No. Chemical Substance Name date Remarks
Canceled - Priority Assessment Chemical Substances  194  1,1,1,3,3,3-Hexamethyldisiloxane  2022/03/31   
Existing chemical substances  Hexamethyldisiloxane     


Screening Info

Publication year Human health effect Ecological effect Detailed assessment by experts Remarks
Exposure Class Hazard Class Priority Exposure Class Hazard Class Priority
2021 5 4 Out of classification - - - Assessment has been conducted by the serial number of Priority Assessment Chemical Substances (PACSs).
2016 4 - - 4 - - Assessment has been conducted by the CAS RN.
2015 4 - - 4 1 High Assessment has been conducted by the CAS RN.
2014 5 - - 5 1 Medium Assessment has been conducted by the CAS RN.
2013 4 - - 5 - - Assessment has been conducted by the CAS RN.
2012 4 - - 4 - - Assessment has been conducted by the CAS RN.


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
Canceled PACS  2022/03/31  194  2-2956  1,1,1,3,3,3-Hexamethyldisiloxane
PACS  2016/04/01  194  2-2956  1,1,1,3,3,3-Hexamethyldisiloxane
Human health effect:
Ecological effect:X
detailed assessment by experts for:


No. 194

Risk Assessment Phase 1-I

publication date Status of risk assessment publication source Remarks
2021/04/01 Risk Assessment Phase 1-I (ecological effect)
2020/04/01 Risk Assessment Phase 1-I (ecological effect)
2019/04/01 Risk Assessment Phase 1-I (ecological effect)





Manufactured and/or imported quantities

Fiscal year MITI Number Registration No. Chemical Substance Name Classification Manufactured and/or imported quantities (t) Remarks
2021 2-2956 Hexamethyldisiloxane General chemical substance 2,000 - < 3,000
2020 2-2956 194 1,1,1,3,3,3-Hexamethyldisiloxane Priority Assessment Chemical Substances (PACSs) 1,627
2019 2-2956 194 1,1,1,3,3,3-Hexamethyldisiloxane Priority Assessment Chemical Substances (PACSs) 2,415
2018 2-2956 194 1,1,1,3,3,3-Hexamethyldisiloxane Priority Assessment Chemical Substances (PACSs) 2,079
2017 2-2956 194 1,1,1,3,3,3-Hexamethyldisiloxane Priority Assessment Chemical Substances (PACSs) 2,067
2016 2-2956 194 1,1,1,3,3,3-Hexamethyldisiloxane Priority Assessment Chemical Substances (PACSs) 2,005
2015 2-2956 Hexamethyldisiloxane General chemical substance 1,000 - < 2,000
2014 2-2956 Hexamethyldisiloxane General chemical substance 1,000 - < 2,000
2013 2-2956 Hexamethyldisiloxane General chemical substance 1,000 - < 2,000
2012 2-2956 Hexamethyldisiloxane General chemical substance 1,000 - < 2,000


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