China Proposes 4 Chemicals for Inventory of Existing Chemical Substances in China (IECSC) Inclusion

On August 11, 2025, the Ministry of Ecology and Environment (MEE) announced that it has reviewed applications submitted to add certain chemical substances to the Inventory of Existing Chemical Substances in China (IECSC). The review was conducted in line with the Measures for the Environmental Management Registration of New Chemical Substances (MEE Order 12,) and the accompanying Guidelines.

MEE determined that four chemical substances meet the requirements outlined in Article 3 of MEE Order 12 and related provisions of the Guidelines. These substances are now proposed for inclusion in the IECSC and have been published on the MEE website for public comment.

The public may submit feedback via the methods specified on the MEE website between August 11 and August 22, 2025.

What does Proposed for Supplementation Mean?

Proposed for Supplementation indicates that, after preliminary review by the MEE, a substance is intended to be added to the official Inventory and is now undergoing a public comment period. The substance is not yet formally listed in the IECSC but has passed the initial documentation review stage.

When will Proposed Substances be Formally Listed in the IECSC?

The process from the Proposed for Supplementation announcement to the final official listing announcement typically takes 2 to 6 months. During this period, the substances are still considered New Chemical Substances and activities involving them require compliance with MEE Order 12.

Chemical Substances Proposed for Supplementation to the IECSC (14th Batch, 2nd Batch of 2025)

No.	Substance Name	Alias	Molecular Formula	CAS Number or Serial Number
1	Cyclohexyl vinylether	Vinylcyclohexylether;(Ethenyloxy)cyclohexane	C8H14O	2182-55-0
2	Ethoxylatedtrimethylolpropanetrimethacrylate	Poly(oxy-1,2-ethanediyl), α-hydro-ω-[(2-methyl-1-oxo-2-propen-1-yl)oxy]-, ether with2-ethyl-2-(hydroxymethyl)-1,3-propanediol(3:1)(ACl)	(C2H4O)n(C2H4O)n(C2H4O)n C18H26O6	82727-34-2
3	1,3-Butyleneglycol, diesterswith decanoic acidand octanoic acid	Butylene Glycoldicaprylate/dicaprate		211107-84-5
4	Fatty acids, C14-20, cobalt (2+) salts			3065587-79-0

About the Inventory of Existing Chemical Substances in China (IECSC)

The IECSC contains chemical substances that were manufactured, imported, or used commercially in China before October 15, 2003, as well as substances added subsequently under the regulations for the environmental management of new chemical substances.

Chemical substances not listed in the IECSC are considered New Chemical Substances. Their production or import requires prior registration under the environmental management framework for new chemical substances. Registration types include Regular Registration, Simplified Registration, Notification, and New Use Environmental Management Registration.
For substances already listed in the IECSC but subject to New Use Environmental Management, registration for New Use Environmental Management is required if the substance is intended for an industrial use other than its permitted uses.
Enterprises that have completed registration must conduct post-registration management according to the requirements corresponding to their registration type.
Even if a substance is listed in the IECSC, enterprises must also check if it is listed in other controlled inventories (e.g., the Catalogue of Hazardous Chemicals, Catalogue of Precursor Chemicals). If listed, additional compliance obligations such as permits or specific registrations may apply.

Search whether your substances are listed in the IECSC via Chemradar.

If you need any assistance or have any questions, please get in touch with us via service@cirs-group.com.

Further Information

MEE

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