Global FR Compliance Guide: Exporting To EU, US, And Southeast Asia

The reality is that while it’s not possible to use a single formulation to cover all markets, it is possible to select a flame-retardant system with the “highest cross-market compatibility” to minimize the need for formulation adjustments.

However, before discussing specific solutions, one prerequisite must be made clear: for cable applications, the risk of direct contact between flame retardants and copper conductors takes precedence over compliance issues.

A prerequisite that must be addressed upfront: The risk of contact between red phosphorus and copper wires

Red phosphorus flame retardants have an industry-recognized limitation in cable applications. When exposed to moisture, red phosphorus forms phosphoric acid, which corrodes metal components, electrodes, coils, and other parts, potentially leading to quality issues such as wire breaks, poor contact, or even short circuits. In high-temperature, high-humidity environments, red phosphorus may react with substrates such as plastics to produce acidic substances like phosphoric acid. These substances can gradually erode the insulation material, potentially even transforming it into a conductor. Red phosphorus flame retardants may also pose a risk of phosphine (PH₃) release in prolonged hot and humid environments, leading to corrosion of metal contacts.

Cables are in direct contact with copper wires—the copper conductors are encased in PVC sheaths or insulation layers treated with red phosphorus flame retardants. If red phosphorus leaches out or migrates to the interface in a hot and humid environment, the resulting phosphoric acid will directly corrode the copper conductors.

Therefore, red phosphorus-based flame retardants are not suitable for use in cable insulation or sheath layers that come into direct contact with copper conductors, unless the following conditions are met:

• High-quality microcapsules are used to encapsulate the red phosphorus, with an intact, dense coating that prevents the migration of phosphine and phosphoric acid

• Copper ion stabilizers are added to the formulation to neutralize the phosphine generated during the red phosphorus processing

• The cable’s long-term operating environment is dry, with no high-temperature or high-humidity conditions

  
  

However, for applications such as pipes and profiles that do not come into direct contact with metal, red phosphorus is a suitable choice—as little as 6–10 parts in rigid PVC pipes can meet Class B1 standards, with minimal impact on ring stiffness and impact strength.

Before evaluating a red phosphorus solution, please first confirm whether your product is suitable for its use.

EU: REACH Is a Dynamic Maze; Antimony and Phosphates Are Both in the Risk Zone

Flame retardant requirements for PVC products in the EU market primarily focus on two levels:

Material compliance: The REACH Candidate List of SVHCs is a dynamic boundary.

As of February 2026, ECHA has updated the SVHC Candidate List to 253 substances. The core requirement of the regulation is that when the concentration of a single SVHC in a homogeneous material exceeds 0.1% (1,000 ppm), companies must provide safety instructions for use to downstream users; if the annual export volume of that substance also exceeds 1 metric ton, a notification must be submitted to ECHA within six months.

Antimony trioxide (Sb₂O₃) has been included in the SVHC Candidate List as a substance of particular concern. Some downstream customers (especially those in the German automotive supply chain) have explicitly requested antimony-free formulations. In addition, certain types of phosphate-based flame retardants (such as TCPP and TDCPP) are currently undergoing SVHC screening due to risks of endocrine disruption.

Fire Performance: Building cables must comply with CPR (EN 50575) and meet the B2ca class requirements by passing the flame spread, heat release, and smoke density tests specified in EN 50399; piping materials must meet the B-s1,d0 class requirements of EN 13501-1.

Compliance Recommendations:

• Before exporting to the EU, verify whether each substance in the formulation is listed on the SVHC list

• If Sb₂O₃ is present, assess whether its concentration exceeds the 0.1% threshold

• Prepare a complete SCIP notification document

• Retain SVHC screening reports from raw material suppliers

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United States: UL Standards Are Stringent, but State Regulations Are More Stringent Than Federal Ones

The core certifications for the U.S. market are UL 94 (V-0/V-1/V-2) and UL 1685 (bundle burning). For building cables, NFPA 130 (Rail Transit) and NFPA 70 (NEC—National Electrical Code) are the primary standards.

While there is no federal-level RoHS in the U.S., California’s Proposition 65 imposes strict restrictions on flame retardants. The Proposition 65 controlled substances list includes various flame-retardant substances subject to restrictions. Common flame retardants such as TDCPP, TDBPP, and TCEP are listed, with a limit of typically 25 ppm per substance. Polybrominated biphenyls are a typical regulated category; in addition, various bromine-based and phosphorus-based flame retardants are subject to regulation. Once a substance is added to the list, the relevant manufacturers must complete compliance within 12 months; otherwise, they face legal action.

Green procurement laws in some states have already imposed restrictions on halogenated flame retardants and antimony compounds. For high-end projects exported to the U.S. (such as data centers and hospitals), customers often proactively request halogen-free and antimony-free flame retardant solutions.

Compliance Recommendations:

• Verify whether all flame retardants in the formulation are listed on the California Proposition 65 list

• For restricted flame retardants (such as TDCPP and TCEP), ensure that the concentration is below 25 ppm per substance

• Prepare UL test reports and a California Proposition 65 compliance statement

  
  

Southeast Asia: Cost-Sensitive, but Regulations Are Aligning with the EU

The Southeast Asian market currently focuses primarily on basic fire safety standards, but regulations are rapidly aligning with those of the European Union.

Vietnam: On January 1, 2026, Vietnam’s new Chemicals Law (No. 69/2025/QH15) officially took effect, replacing the previous law. The accompanying Decree No. 26/2026/ND-CP sets out detailed regulations on the control of hazardous chemicals in products and goods for the first time, requiring manufacturers or importers to submit mandatory declarations before placing products on the market for the first time, as well as to comply with information disclosure and record-keeping requirements. QCVN 06:2022 specifies requirements equivalent to Class B1 for wires, cables, and pipes used in high-rise buildings.

Thailand: TISI (Thai Industrial Standards Institute) imposes flame-retardant requirements on construction cables, typically equivalent to the bundle burning test in IEC 60332-3. TISI implements a dual-track system combining mandatory and voluntary certification; products listed in the mandatory catalog must obtain a certification certificate before entering the Thai market. TISI has introduced stricter testing requirements and higher limit values, covering RoHS and heavy metal restrictions.

Indonesia: SNI standards require flame-retardant testing for imported cables; however, testing resources are limited, and factory self-inspection reports are generally well-accepted.

A common characteristic of these markets is price sensitivity, but regulations are rapidly aligning with those of the European Union. Vietnam has launched a REACH-like chemical registration system, and Thailand’s TISI is also tightening restrictions on heavy metals and halogenated flame retardants.

Compliance Recommendations:

• Vietnamese Market: Monitor the declaration requirements under the new Chemicals Law and confirm whether products fall within the scope of mandatory declaration.

• Thai Market: Confirm whether products are included in the TISI mandatory certification list and prepare for TISI certification in advance.

• It is recommended to retain domestic Class B1 test reports and verify whether local authorities accept declarations of equivalence.

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Comparison of Alternatives: More Than Just Red Phosphorus

In situations where cables come into direct contact with copper conductors, the following solutions are worth considering:

For applications such as pipes and profiles where there is no direct contact with metal, red phosphorus remains the most cost-effective and efficient choice—just 6 to 10 parts are sufficient to meet Class B1 standards, and it has minimal impact on ring stiffness and impact strength.

Summary: The path to compliance is not a one-size-fits-all solution, but rather a tiered decision-making process.

Step 1: Identify the product type

• Cable insulation/sheathing (in direct contact with copper wires) → Prioritize evaluating microcapsule-encapsulated red phosphorus + copper ion stabilizer or phosphorus-nitrogen synergistic solutions

• Pipes and profiles (not in contact with metal) → Red phosphorus solutions are feasible

  
  

Step 2: Identify the target market

• EU → REACH SVHC screening + CPR flame retardancy testing

• U.S. → UL certification + California Proposition 65 compliance

• Southeast Asia → TISI/QCVN certification + chemical registration

  
  

Step 3: Prepare Compliance Documentation

• REACH SVHC screening report

• California Proposition 65 compliance statement

• UL/EN/IEC test reports

• Compliance declarations from raw material suppliers

  
  

No single formulation can meet the requirements of all markets, but selecting the right flame-retardant system and conducting compliance screening in advance can minimize the need for formulation adjustments. For applications such as tubing that do not come into direct contact with metal, red phosphorus-based solutions—which are halogen-free, heavy-metal-free, and require low addition levels—offer high cross-market compatibility. For cable applications, the risk of metal corrosion must be prioritized in the assessment. Solutions involving microencapsulation combined with copper ion stabilizers should be selected, or non-corrosive alternatives such as phosphorus-nitrogen synergistic formulations should be considered.