Baby Safety / Compounds / Crystalline silica (quartz)

Is Crystalline silica (quartz) safe for babies and kids?

Very high risk for kids

Infants are more vulnerable to Crystalline silica (quartz) than children or adults due to immature hepatic/renal clearance, higher intake-to-body-weight ratio, rapid organ development, and increased gastrointestinal absorption.

What is crystalline silica (quartz)?

The IUPAC name is dioxosilane.

Also known as: dioxosilane, SILICON DIOXIDE, Silica, Silicic anhydride.

IUPAC name
dioxosilane
CAS number
14808-60-7
Molecular formula
O2Si
Molecular weight
60.084 g/mol
SMILES
O=[Si]=O
PubChem CID
24261

Risk for babies

Very high risk

Infants are more vulnerable to Crystalline silica (quartz) than children or adults due to immature hepatic/renal clearance, higher intake-to-body-weight ratio, rapid organ development, and increased gastrointestinal absorption.

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

Context-dependent

Pregnancy alters the metabolism and distribution of Crystalline silica (quartz), 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 Crystalline silica (quartz). The classifications differ — that's the data.

AgencyYearClassificationNotes
IARC2012Group 1 (carcinogenic to humans)Inhaled crystalline silica in the form of quartz or cristobalite from occupational sources; lung cancer; silicosis as precursor condition; Monograph 100C; classification does not apply to quartz from food or non-occupational sources at environmental concentrations
EPA CTX / NTP RoC—Known Human Carcinogen
EPA CTX / IARC—Group 1 - Carcinogenic to humans

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 crystalline silica (quartz)

  • Industrial Facilities — Manufacturing plants, Chemical storage areas, Waste treatment sites
  • Occupational Environments — Factories, Warehouses, Transportation vehicles

Safer alternatives

Lower-risk approaches that achieve a similar outcome to Crystalline silica (quartz):

  • Physical/mechanical pest control (IPM)
    Trade-offs: More labor-intensive. May not be sufficient for severe infestations.
    Relative cost: Variable; lower long-term

Frequently asked questions

Is crystalline silica (quartz) safe for kids?

Infants are more vulnerable to Crystalline silica (quartz) than children or adults due to immature hepatic/renal clearance, higher intake-to-body-weight ratio, rapid organ development, and increased gastrointestinal absorption.

What products contain crystalline silica (quartz)?

Crystalline silica (quartz) appears in: Manufacturing plants (Industrial facilities); Chemical storage areas (Industrial facilities); Factories (Occupational environments); Warehouses (Occupational environments).

What should I do if my child is exposed to crystalline silica (quartz)?

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.

Why do regulators disagree about crystalline silica (quartz)?

Crystalline silica (quartz) has been classified by 3 agencies including IARC, EPA CTX / NTP RoC, EPA CTX / IARC, with differing conclusions. 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. See the regulatory consensus table on this page for the full picture.

See Crystalline silica (quartz) in the baby app

Look up products containing crystalline silica (quartz), compare to alternatives, and explore the full data record.

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Sources (3)
  1. IARC Monographs Volume 100C: Silica Dust, Crystalline, in the Form of Quartz or Cristobalite — Arsenic, Metals, Fibres, and Dusts (2012) — regulatory
  2. OSHA 29 CFR 1910.1053: Occupational Exposure to Respirable Crystalline Silica (2016) — regulatory
  3. NIOSH Hazard Review: Health Effects of Occupational Exposure to Respirable Crystalline Silica (2002) — regulatory

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 →