Baby bottles — child safety profile

What is this product?

Bottles used to feed infants formula or expressed breast milk. The material evolution of baby bottles represents one of the most significant consumer product safety transitions of the 2000s: polycarbonate (PC, BPA-based) was the industry standard until BPA research accumulated, leading to regulatory action and market shift to polypropylene (PP) and glass. Today, PP is the dominant material; glass and silicone are preferred alternatives. Nipples are separate from bottle bodies and typically made from silicone or latex.

What's in it

Click any compound name for its full safety profile, regulatory consensus, and exposure data.

Who's most at risk

• Infants — Developing organ systems, higher exposure per body weight, oral exploration behavior
• Children — Developing endocrine and neurological systems, higher exposure per body weight

How to use it more safely

• Sterilize bottles before first use and regularly thereafter
• Use age-appropriate nipple flow rates for infant's developmental stage
• Check bottles for cracks or damage before each use
• Allow bottles to cool to appropriate temperature before feeding

Red flags — when to walk away

• Hard, clear plastic baby bottle without 'BPA-free' label — Likely legacy polycarbonate. Clear, rigid, slightly blue-tinted appearance is characteristic of PC. Resin code #7 without BPA-free marking confirms.
• Microwaving formula in a plastic baby bottle — Microwaving creates uneven heating hot spots and may exceed safe temperature thresholds for any plastic. All major bottle manufacturers advise against microwaving.
• Scratched, cloudied, or discolored bottle body — Surface damage increases leaching potential. Discoloration indicates polymer degradation.

Green flags — what to look for

• Glass bottle — Zero polymer migration from bottle body into formula/milk.
• PP bottle with 'BPA-free' and resin code #5 — No BPA; no phthalate plasticizers; current FDA-cleared standard.

Safer alternatives

• Glass bottles — Non-toxic, durable, easier to inspect for damage
• Stainless steel bottles — Non-leaching, long-lasting, temperature stable
• Direct breastfeeding — Eliminates bottle-related risks entirely

Frequently asked questions