What flame-retardant system is in a plastic, foam or textile?
Identify the system, not a fire rating
A flame-retardant formulation can combine organic ingredients, inorganic ingredients and synergists, so one detected element does not describe the complete system. We ask whether the target is a plastic compound, a foam matrix or a textile treatment because the host material and location change how the ingredients are interpreted. This is a composition study, not a fire test, and it does not provide a flame-retardant rating or burning-test result. For the broader stabilizer and processing-aid package, see our polymer additive guide; here we concentrate on flame-retardant chemistry.
The main chemical families
Halogen-based systems can use brominated or chlorinated organic ingredients, sometimes with antimony-containing synergists whose role depends on the surrounding formulation. Phosphorus-based systems include phosphate esters, phosphinate salts and ammonium polyphosphate, which are different chemical forms rather than interchangeable phosphorus labels. Nitrogen-containing systems include melamine-related ingredients, while inorganic systems can use aluminium hydroxide or magnesium hydroxide.
Several families can be combined in one article, and an additive that contributes to flame retardancy may also affect filler loading or other material properties. For example, a manufacturer who wants to compare two foam blocks can ask whether their phosphorus-based ingredient patterns differ without assuming that phosphorus content predicts their fire behavior.
Read elemental and molecular evidence together
ICP-MS can provide element clues such as bromine, phosphorus, antimony, aluminium and magnesium where the sample preparation and measurement support the particular element. An aluminium or magnesium signal alone does not prove a hydroxide filler, and phosphorus alone does not distinguish an organic phosphate from an inorganic phosphorus ingredient. LC-MS/MS and GC-MS can support organic flame-retardant identification where reference spectra or standards are available and the measured evidence is sufficiently specific. We keep a compound assignment separate from a broader family finding or unresolved material, rather than infer a named ingredient from its intended function.
A textile finish may be a small fraction of the whole fabric, while a foam block can include a surface skin with a different material balance from its interior. Identify the treated face or foam region in the declaration so dilution by the host material is not mistaken for a change in the flame-retardant package. An estimated ingredient proportion describes the analyzed specimen and cannot establish finished-product fire performance or regulatory compliance.
Propose a solid article for review
Plastic parts, foam blocks and finished fabrics can be reviewed as solid articles after declaration, SDS and component review. Declare neat liquid flame retardants first; non-water-based liquids are not received from overseas as supplied, so propose an article containing the flame retardant for review instead. Articles containing substances outside the existing chemical inventory are reviewed case by case after declaration, and a solid form does not override prohibited-substance restrictions.
How to start
We review overseas industrial samples before acceptance. Use our industrial analysis page and sample-shipping guide to prepare your declaration. Our reports are research-grade analytical reports from a laboratory that is not accredited. They cannot be used for product registration or legal proceedings.
FAQ
Does bromine identify one particular flame retardant?
Bromine in a plastic or foam is an elemental clue; a particular brominated flame-retardant identity needs molecular evidence that distinguishes the proposed compound.
Can phosphorus content predict a foam's fire rating?
Phosphorus content cannot establish a foam's fire rating because ingredient form, distribution, host polymer and physical structure also affect burning behavior.
Should we send the whole treated fabric?
A treated fabric can retain the finish and its substrate together; identify the treated side and provide an untreated reference of comparable fabric where available.
Can we send a neat liquid flame retardant?
Declare the liquid flame retardant first; non-water-based liquid material is not received as supplied, while a solid treated article can be proposed for declaration review.