Baby Safety / Compounds / Selenium dioxide

Is Selenium dioxide 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 Selenium dioxide, 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 selenium dioxide?

Also known as: Selenious anhydride, Selenium oxide (SeO2), Selenium dioxide dimer, Selenous acid anhydride.

IUPAC name
Selenium dioxide
CAS number
7446-08-4
Molecular formula
SeO2
Molecular weight
110.96 g/mol
SMILES
O=[Se]=O
PubChem CID
24007

Risk for babies

Context-dependent

Pregnancy alters the metabolism and distribution of Selenium dioxide, 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 Selenium dioxide, 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

2 regulatory and scientific bodies have classified Selenium dioxide. The classifications differ — that's the data.

AgencyYearClassificationNotes
EPA——
OSHA——

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 selenium dioxide

  • pigment production
  • glass/ceramics manufacturing
  • laboratory reagent
  • semiconductor production

Safer alternatives

Lower-risk approaches that achieve a similar outcome to Selenium dioxide:

  • Selenomethionine (organic selenium)
    Trade-offs: Lower bioavailability for some applications. Higher cost per unit selenium.
    Relative cost: 3-5×
  • Manganese dioxide
    Trade-offs: Different selectivity profile. May require harsher conditions.
    Relative cost: 0.1×

Frequently asked questions

What products contain selenium dioxide?

Selenium dioxide appears in: pigment production; glass/ceramics manufacturing; laboratory reagent.

See Selenium dioxide in the baby app

Look up products containing selenium dioxide, compare to alternatives, and explore the full data record.

Open in baby View raw API data

Sources (1)
  1. ATSDR Toxicological Profile — CAS 7446-08-4 — 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 →