Recycled polyester facilities should establish robust systems for managing input feedstock, including the following:

1. Material Inventory List (MIL):
   Maintain a comprehensive record of input materials to ensure feedstock traceability. Both mechanical and chemical recycling facilities should include the following details in the MIL:

   • Material category (e.g., PET bottle, ocean-bound plastic, pre- or post-consumer textile waste)

   • Form of material

   • Material composition

   • Name of the material vendor

   • Origin of the material/feedstock

   • Quantity of purchased materials

   • Quantity of recycled material produced

   • Quantity of waste generated during operations

2. Hazardous Substance Risk Assessment:
   Assess the input feedstock for potential risks related to hazardous substances. Guidelines include indicative substances in the feedstock to assist with this assessment.

Recycled polyester facilities must implement robust chemical management systems to ensure sustainable and safe practices. The requirements include the following:

1. Chemical Inventory List (CIL):

All chemicals used in recycling processes must be recorded in a ZDHC Chemical Inventory List (CIL) which should be updated monthly with the following details:

• Names of chemical products and manufacturers

• Quantity delivered or in stock

• Consumption or usage details

• Use or function of the chemical

• Lot/batch numbers

• Storage location

• Expiry date (if available)

• Date and version of the Safety Data Sheet (SDS)

Additionally, ensure the inclusion of:

• Safety Data Sheets (SDS) and Technical Data Sheets (TDS)

• Hazardous ingredients with CAS numbers and percentage composition

• Hazard information (H-statements from Section 2 of the SDS)

• Precautionary measures for identified hazards (P-statements for storage and handling)

2. Voluntary Requirements for Input Chemicals:

ZDHC MRSL Conformance:

• Suppliers should familiarise themselves with ZDHC MRSL V3.1 and its potential risks to prepare for future updates. (Note: Ethylene glycol and methanol, commonly used in polyester recycling processes, are excluded from the main list of ZDHC MRSL V3.1 and are out of scope.)

Encouraging Compliance:

• Suppliers are encouraged to work with chemical suppliers to register their products on the ZDHC Gateway, achieving at least ZDHC MRSL Level 1 conformance through ZDHC Approved Certifiers.

Verification and Best Practices:

• Verify the ZDHC MRSL Conformance of input chemicals by registering on the ZDHC Gateway and accessing its database for conformant formulations.

• As a best practice, record ZDHC MRSL conformance data in the Chemical Inventory List (CIL).