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Substance Data

Chemical Substances Information

CAS RN	MITI Number	Chemical Substance Name	Chemical Structure
2210238-56-3	9-2038	Potassium salt of hydrolyzed reaction products of octadecene and sulfur trioxide	-

Regulatory Classification

Regulatory Classification	Cabinet Order No./Registration No.	Chemical Substance Name	date	Remarks
Priority Assessment Chemical Substances (PACSs)	281	Potassium octadecenesulfonate or potassium hydrogen octadecenedisulfonate or potassium hydroxyoctadecanesulfonate or dipotassium octadecenedisulfonate	2024/04/01	If a chemical substance of the above CAS RN fulfills a certain condition, it corresponds to this Registration Number.
Existing chemical substances	-	Salt (K, Na) of hydroxyalkane (C=8-24) sulfonic acid		If a chemical substance of the above CAS RN fulfills a certain condition, it corresponds to this MITI Number.

Screening Info

Publication year	Human health effect			Ecological effect			Detailed assessment by experts	Remarks
	Exposure Class	Hazard Class	Priority	Exposure Class	Hazard Class	Priority
2023	2	-	-	2	2	High		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
PACS	2024/04/01	281	9-2038	Potassium octadecenesulfonate or potassium hydrogen octadecenedisulfonate or potassium hydroxyoctadecanesulfonate or dipotassium octadecenedisulfonate	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.

281

Risk Assessment Phase 1-I

publication date	Status of risk assessment	publication source	Remarks
2025/04/01	Risk Assessment Phase 1-I (ecological effect)
2024/04/01	Risk Assessment Phase 1-I (ecological effect)

Documents

Manufactured and/or imported quantities

Fiscal year	MITI Number	Registration No.	Chemical Substance Name	Classification	Manufactured and/or imported quantities (t)	Remarks
2023	9-2038		Salt (K, Na) of hydroxyalkane (C=8-24) sulfonic acid	General chemical substance	1 - < 1,000
2022	9-2038		Salt (K, Na) of hydroxyalkane (C=8-24) sulfonic acid	General chemical substance	1 - < 1,000
2021	9-2038		Salt (K, Na) of hydroxyalkane (C=8-24) sulfonic acid	General chemical substance	1 - < 1,000
2020	9-2038		Salt (K, Na) of hydroxyalkane (C=8-24) sulfonic acid	General chemical substance	1 - < 1,000
2019	9-2038		Salt (K, Na) of hydroxyalkane (C=8-24) sulfonic acid	General chemical substance	1 - < 1,000

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