ASTM D6400

ASTM D6400 is the standard specification for labeling plastics designed to be aerobically composted in municipal or industrial facilities. It helps define how such plastics should be identified so users, buyers, and composting operations can better understand their intended end-of-life route. For products marketed as compostable, this standard matters because labeling consistency can support clearer procurement decisions, reduce confusion, and improve alignment between material claims and handling expectations.

ASTM D6400 standard overview

The ASTM D6400 standard focuses on labeling requirements for plastics intended for aerobic composting in municipal or industrial facilities. As a technical specification, it supports a common framework for identifying these materials in the marketplace and in waste-management settings. The standard is relevant to products that are meant to enter composting systems rather than conventional disposal streams. In practice, it is often used as part of documentation and compliance efforts tied to compostable plastic product claims and labeling control.

Where is ASTM D6400 used?

This standard is commonly used where compostable plastic items are produced, sold, or specified for use in environments that support aerobic composting. It may apply to packaging, serviceware, bags, or other plastic articles intended for municipal or industrial composting facilities. Manufacturers, brand owners, converters, and quality teams may reference ASTM D6400 when developing product labels, reviewing claim language, or checking whether identification is consistent with the intended composting pathway. It is especially useful when material communication must stay clear across the supply chain.

Practical importance of ASTM D6400

ASTM D6400 is important because clear labeling helps reduce misunderstanding about how a plastic product should be handled after use. For procurement and quality control, it provides a defined reference point for evaluating compostable labeling claims and supporting more consistent product documentation. It can also help lower the risk of improper disposal messaging by aligning labels with the intended aerobic composting route. For organizations that manage compostable products, the standard supports more reliable specification review and compliance-oriented decision-making.

• Labeling for compostable plastics
• Aerobic composting pathway
• Municipal and industrial facilities
• Product claim and specification review
• Consistency in technical labeling