On November 28, 2024, China’s State Administration for Market Regulation published GB/T 45091-2024, a national standard outlining restricted substances in recycled plastics. Effective from June 1, 2025, the standard provides guidelines for classification, requirements, and testing to ensure material safety.

Development and Scope

The standard, titled "Plastics – Requirements for Restricted Substances in Recycled Plastics," was developed by the Plastic Recycling Branch of the China Synthetic Resin Association (CPRRA).  The drafting process progressed rapidly from its initiation in April 2024 with a public consultation on the draft completed by August 2024.

The standard covers recycled plastic pellets and finished products made from waste plastics through processes such as screening, sorting, crushing, washing, and extrusion or modification. It also covers recycled polyethylene terephthalate (PET) bottle flakes. However, it excludes recycled plastics derived from hazardous waste sources such as medical waste, pesticide packaging, and radioactive materials, as well as recycled plastics intended for food contact or pharmaceutical packaging applications.

Key Provisions

The standard defines "restricted substances" as materials that are prohibited or restricted by law, regulation, or standard in recycled plastics . These substances are not necessarily classified as hazardous or harmful chemicals, but are restricted to ensure the safety, environmental sustainability, and performance of recycled plastics.

Restricted substances are divided into two categories:

1. Voluntarily Declared Substances:

   • Manufacturers or importers are required to declare that recycled plastics, whether domestically produced or imported, do not contain certain restricted substances.

2. Regulated Substances with Specific Limits:

   • The standard mandates monitoring and adherence to specific limits for substances classified as restricted under regulatory oversight.

For more details, visit the National Public Service Platform here.

On December 13, 2024, China’s Department of Food Safety Standards and Risk Monitoring and Assessment announced that two substances, have passed the safety assessment for use in food contact materials (FCMs) as new varieties. The safety evaluation was conducted by an expert review organized by the relevant regulatory body in accordance with the requirements of the Food Safety Law of the People's Republic of China.

Background Information

Under China’s Food Safety Law, any substance intended for use in food contact materials and articles must undergo a rigorous safety evaluation before approval. This ensures that materials meet strict standards for safety and suitability for contact with food.

Newly Approved Substances

The safety evaluations resulted in the approval of the following two substances:

1. 1,3,5-Trimethyl-2,4,6-Tris(3,5-Di-tert-butyl-4-hydroxybenzyl)benzene (CAS No 1709-70-2): Approved as an additive for use in carbon monoxide-ethylene-propylene terpolymer plastic materials and products.

2. Poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) (CAS No 147398-31-0): Approved for use in polyhydroxyalkanoate (PHA) plastic materials and products intended to come into contact with food. However, its use is subject to the following conditions:

• It cannot be used in applications where the temperature exceeds 100°C.

• It must not be used in the manufacture of food contact materials and products intended for infants.

• The material must comply with GB 4806.6-2016, China's national food safety standard.

For further information, please refer to the complete announcement and attached documentation here.