Baby Safety / Compounds / Phthalic anhydride

Is Phthalic anhydride safe for babies and kids?

Context-dependent for kids

(Babies-specific data is limited; this page draws from human pregnant context.) Pregnancy alters the metabolism and distribution of Phthalic anhydride, potentially increasing fetal exposure. The developing embryo/fetus is vulnerable during organogenesis (weeks 3-8) and neurological development. Placental transfer should be assumed.

What is phthalic anhydride?

The IUPAC name is 1H-2-benzopyran-1,3(4H)-dione.

Also known as: 1H-2-benzopyran-1,3(4H)-dione, 1,3-Isobenzofurandione, 2-Benzofuran-1,3-dione, Phthalandione.

IUPAC name
1H-2-benzopyran-1,3(4H)-dione
CAS number
85-44-9
Molecular formula
C8H4O3
Molecular weight
148.12 g/mol
SMILES
C1=CC=C2C(=C1)C(=O)OC2=O
PubChem CID
6811

Risk for babies

Context-dependent

Pregnancy alters the metabolism and distribution of Phthalic anhydride, potentially increasing fetal exposure. The developing embryo/fetus is vulnerable during organogenesis (weeks 3-8) and neurological development. Placental transfer should be assumed.

No specific reproductive toxicity data identified, but pregnancy-specific safety data is limited for most chemicals. Precautionary minimization of exposure is recommended.

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

Risk for pregnant and nursing people

Context-dependent

Pregnancy alters the metabolism and distribution of Phthalic anhydride, potentially increasing fetal exposure. The developing embryo/fetus is vulnerable during organogenesis (weeks 3-8) and neurological development. Placental transfer should be assumed.

No specific reproductive toxicity data identified, but pregnancy-specific safety data is limited for most chemicals. Precautionary minimization of exposure is recommended.

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

Regulatory consensus

3 regulatory and scientific bodies have classified Phthalic anhydride. The classifications differ — that's the data.

AgencyYearClassificationNotes
OSHA——
ACGIH——
ECHA——

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 phthalic anhydride

  • plasticizer production
  • alkyd resin production
  • polyester coatings

Safer alternatives

Lower-risk approaches that achieve a similar outcome to Phthalic anhydride:

  • Trimellitic anhydride (TMA) for specific applications
    Trade-offs: Higher cost. TMA itself is a respiratory sensitizer. Different polymer properties.
    Relative cost: 2×
  • Bio-based 2,5-furandicarboxylic acid (FDCA)
    Trade-offs: Not drop-in replacement. Requires new polymerization infrastructure. Lower melting point.
    Relative cost: 3-5×

Frequently asked questions

What products contain phthalic anhydride?

Phthalic anhydride appears in: plasticizer production; alkyd resin production; polyester coatings.

See Phthalic anhydride in the baby app

Look up products containing phthalic anhydride, compare to alternatives, and explore the full data record.

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Sources (1)
  1. ATSDR Toxicological Profile — CAS 85-44-9 — reference

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 →