Baby Safety / Compounds / Cadmium selenide (CdSe) nanocrystals

Is Cadmium selenide (CdSe) nanocrystals safe for babies and kids?

Very high risk for kids

Infants are extremely vulnerable to Cadmium selenide (CdSe) nanocrystals due to immature blood-brain barrier, higher gastrointestinal absorption rates (40-50% vs 3-10% in adults), and rapidly developing neurology. Even trace exposure can cause irreversible neurodevelopmental harm.

What is cadmium selenide (cdse) nanocrystals?

The IUPAC name is selanylidenecadmium.

Also known as: selanylidenecadmium, CADMIUM SELENIDE, Cadmium selenide (CdSe), cadmium(II) selenide.

IUPAC name
selanylidenecadmium
CAS number
1306-24-7
Molecular formula
CdSe
Molecular weight
191.38 g/mol
SMILES
[Se]=[Cd]
PubChem CID
14784

Risk for babies

Very high risk

Infants are extremely vulnerable to Cadmium selenide (CdSe) nanocrystals due to immature blood-brain barrier, higher gastrointestinal absorption rates (40-50% vs 3-10% in adults), and rapidly developing neurology. Even trace exposure can cause irreversible neurodevelopmental harm.

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

Severe risk

Pregnancy increases vulnerability to Cadmium selenide (CdSe) nanocrystals. Heavy metals cross the placenta, accumulate in fetal tissue, and interfere with neurodevelopment. Maternal bone resorption during pregnancy mobilizes stored metals.

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

2 regulatory and scientific bodies have classified Cadmium selenide (CdSe) nanocrystals. The classifications differ — that's the data.

AgencyYearClassificationNotes
EPA CTX / Genetox—Genotoxicity: negative (Ames: negative, 0 positive / 1 negative reports)
EPA CTX / Genetox—Genotoxicity: negative (Ames: negative, 0 positive / 1 negative reports)

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 cadmium selenide (cdse) nanocrystals

  • Contaminated Water — Mining site runoff, Industrial discharge, Old infrastructure
  • Food Chain — Fish from contaminated waters, Crops in contaminated soil

Safer alternatives

Lower-risk approaches that achieve a similar outcome to Cadmium selenide (CdSe) nanocrystals:

  • Exposure reduction (no chemical substitute)
    Trade-offs: Exposure reduction does not eliminate the hazard but lowers risk to acceptable levels when alternatives are not available or practical. Requires ongoing monitoring and compliance.
    Relative cost: 1.2-2×

Frequently asked questions

Is cadmium selenide (cdse) nanocrystals safe for kids?

Infants are extremely vulnerable to Cadmium selenide (CdSe) nanocrystals due to immature blood-brain barrier, higher gastrointestinal absorption rates (40-50% vs 3-10% in adults), and rapidly developing neurology. Even trace exposure can cause irreversible neurodevelopmental harm.

What products contain cadmium selenide (cdse) nanocrystals?

Cadmium selenide (CdSe) nanocrystals appears in: Mining site runoff (Contaminated water); Industrial discharge (Contaminated water); Fish from contaminated waters (Food chain); Crops in contaminated soil (Food chain).

What should I do if my child is exposed to cadmium selenide (cdse) nanocrystals?

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 Cadmium selenide (CdSe) nanocrystals in the baby app

Look up products containing cadmium selenide (cdse) nanocrystals, compare to alternatives, and explore the full data record.

Open in baby View raw API data

Sources (3)
  1. PubChem Compound CID 14784 — database
  2. EPA CompTox Chemicals Dashboard — DTXSID1061651 — epa
  3. ATSDR Toxicological Profile — CAS 1306-24-7 — 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 →