TIS 01208-00R94 VOC Emission Requirements for Assembly Parts

The standard "TIS 01208-00R94 VOC emission requirements for assembly parts," published by Toyota Motor Company, one of the world's largest automotive companies, applies to selected interior assembly parts made of organic materials listed in the table titled "VOC requirements for assembly parts." The applicable vehicle example is the Toyota 900W. This technical guide contains the requirements for partial VOC emissions testing according to the method described in the standard "Toyota TSM 0512G Determination of Volatile Organic Compound (VOC) Emissions."

The TIS 01208-00R94 technical guide applies to selected indoor installation parts made of organic materials listed in the table titled “VOC requirements for installation parts” provided within the standard.

VOC compounds include:

• Prohibited substances in the part composition include:
  • 1,4 dichlorobenzene
  • O,O diethyl-O-3,5,6-trichloro-2-pyridyl-phosphorothiate
  • Diazinon
  • 2-(1-Methylpropylphenol methylcarbamate.
• VOC compounds that must be measured as emissions from part composition include:
  • Formaldehyde
  • acetaldehyde

The table shows the requirement for formaldehyde emissions. Only acetaldehyde emissions must be reported (no requirement).

Tests are conducted in accordance with the standard "TSZ0001G Control method for substances of environmental concern." Only one sample should be evaluated. The average of two samples taken from the same bag is used to evaluate the sample's performance. The sample should not be cut and its thickness should remain unchanged. The final report reports the test result of two sampling measurements taken from the same bag and the average of both sampling measurements for both formaldehyde and acetaldehyde.

In this standard, VOC requirements are given for the following assembly parts:

• Carpet group, floor, front
• Carpet floor, front
• Panel group, deck
• Silencer, front panel
• Insulator group, instrument panel
• Headlining group, ceiling
• Seat group, front
• Seat group, rear
• Panel group, packaging tray flooring
• Panel group, front door trim
• Panel group, rear door trim
• Ornamental group, front pillar
• Decoration group, center pole
• Ornamental group, center pole, bottom
• Decoration group, ceiling, interior
• Speaker group
• Steering wheel assembly

Four groups of ornaments (right and left side) should be tested simultaneously in the same bag (total 8 pieces in the bag).

Volatile organic compounds (VOCs) for automotive assembly parts are chemicals that evaporate readily and contribute to air pollution, including smog, and can affect indoor air quality in vehicles. In the automotive industry, VOC emissions from assembly parts (e.g., plastics, adhesives, coatings, and interior components) are regulated to ensure compliance with environmental and health standards.

The “40 CFR 59 National volatile organic compound emission standards” published by the US Environmental Protection Agency (EPA), the “VOC solvent emissions directive” published by the European Union countries and similar international legal regulations are aimed at limiting VOC emissions.

Additionally, automakers like Toyota publish internal standards that require suppliers to meet VOC emission limits for interior and exterior components to ensure vehicle indoor air quality and regulatory compliance.

VDA 278, ISO 12219-4 and similar industry standards also include test methods for VOC emissions from materials used in vehicle interiors.

As a major automotive original equipment manufacturer, Toyota places great emphasis on environmental sustainability and compliance with VOC regulations. Toyota addresses VOC emissions from its assembly parts as follows:

• Sustainability and compliance: Toyota is committed to reducing environmental impact across all its operations, including compliance with EU chemical management regulations such as REACH and CLP. Sustainable purchasing guidelines ensure suppliers meet VOC and other environmental standards. Toyota's ISO 14001-certified facilities, including its parts logistics centers, adhere to stringent environmental standards, including VOC emission controls for assembly parts.
• Testing and standards: Toyota partners with major testing organizations to verify VOC emissions from components. Common testing methods include:
  • VDA 278: Measures VOC and FOG (semi-volatile organic compounds) emissions from non-metallic materials.
  • ISO 12219-4/6: Contains tests for VOC emissions in vehicle interiors.
  • Tedlar bag test: Collects volatile organic compounds such as benzene, toluene, ethylbenzene, xylene, and styrene for analysis by gas chromatography/mass spectrometry (GC/MS).
• Low have volatile organic compounds Focus on materials: Toyota is working with suppliers who use low-VOC bonding solutions, such as thin adhesive tapes, reclosable fasteners, and water-based spray adhesives, to reduce emissions from interior components such as trim panels, headliners, and consoles. These materials, such as flexible acoustic material and glass bubbles, are designed to meet low-VOC requirements while supporting sustainability goals such as the use of recycled content.

The technical guide TIS 01208-00R94 includes the following requirements for automotive assembly parts:

• Emission limits: Original equipment manufacturers set maximum allowable VOC concentrations for individual compounds (e.g., formaldehyde benzene) and total volatile organic compounds. These limits are aligned with standards such as VDA 278 or ISO 12219-4.
• Test conditions: Parts are tested in controlled environments to measure emissions under conditions that mimic vehicle interiors (e.g., 28-day VOC emissions testing in ventilated rooms).
• Regulatory compliance: In European Union countries, parts must comply with directives that set VOC content limits for coatings and adhesives, and in the US, the 40 CFR 59 standard, which regulates VOC content in automotive finishes.
• Odor and fogging: In addition to VOC emissions, Toyota may require parts to meet odor detection standards (e.g., VDA 270) and fogging tests (e.g., DIN 75201) to prevent windshield fogging from semi-volatile compounds.

As a result, according to TIS 01208-00R94, Toyota's assembly components must meet stringent VOC standards established by regional regulations and Toyota's internal specifications. These standards include testing against standards such as VDA 278 and ISO 12219-4, focusing on low-VOC materials, and ensuring compliance with sustainability goals.

Our organization, which has been operating for many years and meticulously follows global developments in science and technology, conducts testing, measurement, and analysis in a wide range of areas for businesses across all sectors with a skilled team and extensive infrastructure. In this context, we also provide testing services in accordance with the "TIS 01208-00R94 VOC emission requirements for assembly parts" standard.