Substance Data

Chemical Substances Information

CAS RN MITI Number Chemical Substance Name Chemical Structure
68955-55-5 2-198 (C12-18-Alkyl)dimethylamine N-oxides -


Regulatory Classification

Regulatory Classification Cabinet Order No./Registration No. Chemical Substance Name date Remarks
Priority Assessment Chemical Substances (PACSs)  169  N,N-Dimethylalkan-1-amine oxide (C=10,12,14,16,18, normal chain), (Z)-N,N-dimethyloctadec-9-en-1-amine oxide or (9Z,12Z)-N,N-dimethyloctadeca-9,12-dien-1-amine oxide  2014/04/01  If a chemical substance of the above CAS RN fulfills a certain condition, it corresponds to this Registration Number. 
Existing chemical substances  -  Alkyl (or alkenyl, at least one of the alkyl or alkenyl groups is C8-24,others are C1-5) amine oxide     


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  2014/04/01  169  2-198  N,N-Dimethylalkan-1-amine oxide (C=10,12,14,16,18, normal chain), (Z)-N,N-dimethyloctadec-9-en-1-amine oxide or (9Z,12Z)-N,N-dimethyloctadeca-9,12-dien-1-amine oxide 
Human health effect:
Ecological effect:x
detailed assessment by experts for:
 If a chemical substance of the above CAS RN fulfills a certain condition, it corresponds to this Registration Number.


No. 169

Risk Assessment Phase 1-I

publication date Status of risk assessment publication source Remarks
2016/12/27 Risk Assessment Phase 1-II (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)
2019/04/01 Risk Assessment Phase 1-II (ecological effect)
2018/03/22 Risk Assessment Phase 1-II (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 2-198 169 N,N-Dimethylalkan-1-amine oxide (C=10,12,14,16,18, normal chain), (Z)-N,N-dimethyloctadec-9-en-1-amine oxide or (9Z,12Z)-N,N-dimethyloctadeca-9,12-dien-1-amine oxide Priority Assessment Chemical Substances (PACSs) 2,589
2020 2-198 169 N,N-Dimethylalkan-1-amine oxide (C=10,12,14,16,18, normal chain), (Z)-N,N-dimethyloctadec-9-en-1-amine oxide or (9Z,12Z)-N,N-dimethyloctadeca-9,12-dien-1-amine oxide Priority Assessment Chemical Substances (PACSs) 3,692
2019 2-198 169 N,N-Dimethylalkan-1-amine oxide (C=10,12,14,16,18, normal chain), (Z)-N,N-dimethyloctadec-9-en-1-amine oxide or (9Z,12Z)-N,N-dimethyloctadeca-9,12-dien-1-amine oxide Priority Assessment Chemical Substances (PACSs) 3,061
2018 2-198 169 N,N-Dimethylalkan-1-amine oxide (C=10,12,14,16,18, normal chain), (Z)-N,N-dimethyloctadec-9-en-1-amine oxide or (9Z,12Z)-N,N-dimethyloctadeca-9,12-dien-1-amine oxide Priority Assessment Chemical Substances (PACSs) 4,794
2017 2-198 169 N,N-Dimethylalkan-1-amine oxide (C=10,12,14,16,18, normal chain), (Z)-N,N-dimethyloctadec-9-en-1-amine oxide or (9Z,12Z)-N,N-dimethyloctadeca-9,12-dien-1-amine oxide Priority Assessment Chemical Substances (PACSs) 3,144
2016 2-198 169 N,N-Dimethylalkan-1-amine oxide (C=10,12,14,16,18, normal chain), (Z)-N,N-dimethyloctadec-9-en-1-amine oxide or (9Z,12Z)-N,N-dimethyloctadeca-9,12-dien-1-amine oxide Priority Assessment Chemical Substances (PACSs) 2,546
2015 2-198 169 N,N-Dimethylalkan-1-amine oxide (C=10,12,14,16,18, normal chain), (Z)-N,N-dimethyloctadec-9-en-1-amine oxide or (9Z,12Z)-N,N-dimethyloctadeca-9,12-dien-1-amine oxide Priority Assessment Chemical Substances (PACSs) 1,933
2014 2-198 169 N,N-Dimethylalkan-1-amine oxide (C=10,12,14,16,18, normal chain), (Z)-N,N-dimethyloctadec-9-en-1-amine oxide or (9Z,12Z)-N,N-dimethyloctadeca-9,12-dien-1-amine oxide Priority Assessment Chemical Substances (PACSs) 1,927
2013 2-198 Alkyl (or alkenyl, at least one of the alkyl or alkenyl groups is C8-24,others are C1-5) amine oxide General chemical substance 1 - < 1,000
2012 2-198 Alkyl (or alkenyl, at least one of the alkyl or alkenyl groups is C8-24,others are C1-5) amine oxide General chemical substance 1 - < 1,000


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