Baby Safety / Compounds / Firemaster 550

Is Firemaster 550 safe for babies and kids?

Very high risk for kids

Infants face disproportionate exposure to Firemaster 550 through dust ingestion (hand-to-mouth behavior), breast milk transfer, and dermal contact with treated textiles in cribs and car seats.

What is firemaster 550?

Also known as: FM 550, Great Lakes FM-550.

—
—

Risk for babies

Very high risk

Infants face disproportionate exposure to Firemaster 550 through dust ingestion (hand-to-mouth behavior), breast milk transfer, and dermal contact with treated textiles in cribs and car seats.

Neonates and infants up to 12 months have incomplete blood-brain barrier development, immature Phase I/II metabolic enzymes (particularly CYP3A4, UGT1A1), and higher gastrointestinal permeability. Equivalent doses produce higher internal concentrations and longer residence times.

What to do: Minimize infant exposure through source control. For breastfeeding mothers: reduce maternal exposure. For formula-fed infants: use certified low-migration bottles and verified water sources. Consult pediatrician regarding any concerns.

Risk for pregnant and nursing people

Very high risk

Prenatal exposure to Firemaster 550 through dust inhalation and dietary intake can affect fetal thyroid function and neurodevelopment. Flame retardants accumulate in breast milk.

Known reproductive toxicant (GHS H360) or confirmed endocrine disruptor. Placental transfer is presumed. Fetal exposure during critical developmental windows may cause structural malformations, growth restriction, or functional deficits.

What to do: Minimize exposure during pregnancy and lactation. Consult healthcare provider regarding specific risks. Consider alternative products with lower hazard profiles.

Regulatory consensus

1 regulatory bodyhas classified Firemaster 550.

AgencyYearClassificationNotes
EPA2016Not specifically regulated as a mixture; individual components subject to TSCA

Regulators apply different standards of evidence — animal-data weighting, exposure-pattern assumptions, epidemiological power thresholds — which is why two scientific bodies can review the same data and reach different conclusions. The disagreement is the data.

Where kids encounter firemaster 550

  • Furniture
  • Electronics
  • House Dust
  • Human Biomonitoring

Safer alternatives

Lower-risk approaches that achieve a similar outcome to Firemaster 550:

  • Barrier fabrics (inherently flame-resistant textiles)
    Trade-offs: Eliminates chemical FR entirely. Slightly higher manufacturing cost. California TB 117-2013 allows barrier approach.
    Relative cost: Slightly higher
  • Alumina trihydrate (ATH)
    Trade-offs: Requires high loading (50-60% by weight). No EDC concern. Heavy.
    Relative cost: Lower

Frequently asked questions

Is firemaster 550 safe for kids?

Infants face disproportionate exposure to Firemaster 550 through dust ingestion (hand-to-mouth behavior), breast milk transfer, and dermal contact with treated textiles in cribs and car seats.

What should I do if my child is exposed to firemaster 550?

Minimize infant exposure through source control. For breastfeeding mothers: reduce maternal exposure. For formula-fed infants: use certified low-migration bottles and verified water sources. Consult pediatrician regarding any concerns.

See Firemaster 550 in the baby app

Look up products containing firemaster 550, compare to alternatives, and explore the full data record.

Open in baby View raw API data

Sources (2)
  1. Stapleton et al. (2008) ES&T — Identification of Flame Retardants in Polyurethane Foam — journal
  2. Patton et al. (2016) Endocrinology — Firemaster 550 exposure effects on rat physiology — journal

Reference data, not professional advice. Aggregates publicly available regulatory and scientific data; not a substitute for veterinary, medical, legal, or regulatory advice. Why we built ALETHEIA →