The ASTM D4206 Test determines whether a liquid mixture will sustain burning after ignition under controlled laboratory conditions. Pentyl Labs performs ASTM D4206 testing to help manufacturers evaluate flammability characteristics, support transportation classification, prepare Safety Data Sheets (SDSs), and meet regulatory requirements.
Unlike flash point testing, which determines the lowest temperature at which a liquid produces ignitable vapors, the ASTM D4206 Test evaluates whether a product continues to burn after the ignition source has been removed. This distinction is important because some liquid mixtures may ignite briefly but will not sustain combustion under the conditions specified by the standard.
The ASTM D4206 Test is commonly performed alongside flash point methods such as ASTM D93, ASTM D56, or ASTM D3828 to provide a more complete understanding of a product’s fire hazards and transportation classification.
ASTM D4206, Standard Test Method for Sustained Burning of Liquid Mixtures Using the Small Scale Open-Cup Apparatus, evaluates whether a liquid mixture is capable of sustaining combustion after being ignited.
The test is particularly useful for products that contain both flammable and nonflammable components, including water-based formulations, solvent blends, and specialty chemical products. Results from the ASTM D4206 Test may be used during product development, hazard assessments, regulatory submissions, and shipping classifications.
The ASTM D4206 Test provides information that flash point testing alone cannot. Some products may have a relatively low flash point but fail to sustain combustion once the ignition source is removed.
Determining sustained burning characteristics helps manufacturers better understand product hazards and can support regulatory decision-making.
Common applications include:
Pentyl Labs performs ASTM D4206 testing on a wide variety of liquid products, including:
If you are unsure whether your product is suitable for ASTM D4206 testing, our technical team can help determine the appropriate flammability test.
During the ASTM D4206 Test, a measured volume of the liquid sample is placed into a standardized small-scale open-cup apparatus. The sample is ignited under controlled laboratory conditions using the procedure specified by ASTM.
Following ignition, the analyst observes whether the sample continues burning after the ignition source has been removed. The sustained burning behavior is then evaluated according to the ASTM D4206 acceptance criteria.
Pentyl Labs provides clear, regulatory-ready reports documenting the outcome of the ASTM D4206 Test.
Pentyl Labs provides fast, reliable ASTM D4206 testing with responsive customer support and regulatory-ready reporting.
Our laboratory offers:
Whether you require routine compliance testing or product development support, Pentyl Labs can help determine the appropriate flammability testing program for your product.
The ASTM D4206 Test determines whether a liquid mixture continues burning after an ignition source has been removed under standardized laboratory conditions.
Flash point testing determines the temperature at which vapors ignite. The ASTM D4206 Test evaluates whether the product will sustain combustion after ignition.
The ASTM D4206 Test is suitable for many liquid chemical products, including solvent blends, cleaners, coatings, industrial chemicals, adhesives, and specialty formulations.
ASTM D4206 testing is commonly performed during product development, transportation classification, regulatory submissions, SDS preparation, and flammability evaluations.
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