Is Molybdenum trioxide safe for babies and kids?
Moderate risk for kidsInfants are more vulnerable to Molybdenum trioxide 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 molybdenum trioxide?
The IUPAC name is trioxomolybdenum.
Also known as: trioxomolybdenum, Molybdenum(VI) oxide, Molybdic anhydride, Molybdenum oxide (MoO3).
- IUPAC name
- trioxomolybdenum
- CAS number
- 1313-27-5
- Molecular formula
- MoO3
- Molecular weight
- 143.95 g/mol
- SMILES
- O=[Mo](=O)=O
- PubChem CID
- 14802
Risk for babies
Moderate riskInfants are more vulnerable to Molybdenum trioxide 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.
Risk for pregnant and nursing people
Context-dependentPregnancy alters the metabolism and distribution of Molybdenum trioxide, 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.
Regulatory consensus
5 regulatory and scientific bodies have classified Molybdenum trioxide. The classifications differ — that's the data.
| Agency | Year | Classification | Notes |
|---|---|---|---|
| IARC | 2018 | Group 2A — Molybdenum trioxide is probably carcinogenic to humans (IARC Monograph Volume 118, 2018); the classification is based on sufficient evidence of lung tumors in rats and mice following inhalation exposure and limited evidence in humans; industrial molybdenum processing workers show suggestive excess lung cancer; MoO3 is an industrial molybdenum compound distinct from the nutritional molybdate used in dietary supplementation; the nutritional trace element role of molybdenum as cofactor of xanthine oxidase, sulfite oxidase, and aldehyde oxidase is well established and not associated with carcinogenicity | |
| EPA CTX / IARC | — | Group 2B - Possibly carcinogenic to humans | |
| EPA CTX / CalEPA | — | Known human carcinogen | |
| EPA CTX / Genetox | — | Genotoxicity: negative (Ames: negative, 0 positive / 9 negative reports) | |
| EPA CTX / Genetox | — | Genotoxicity: negative (Ames: negative, 0 positive / 9 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 molybdenum trioxide
- 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 Molybdenum trioxide:
-
Enzyme or biocatalysts where applicable
Trade-offs: Temperature/pH sensitivity. Higher cost for some applications.Relative cost: 1.2-2×
Frequently asked questions
Is molybdenum trioxide safe for kids?
Infants are more vulnerable to Molybdenum trioxide 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 molybdenum trioxide?
Molybdenum trioxide 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 molybdenum trioxide?
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 molybdenum trioxide?
Molybdenum trioxide has been classified by 5 agencies including IARC, EPA CTX / IARC, EPA CTX / CalEPA, EPA CTX / Genetox, EPA CTX / Genetox, 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 Molybdenum trioxide in the baby app
Look up products containing molybdenum trioxide, compare to alternatives, and explore the full data record.
Open in baby View raw API dataSources (1)
- IARC Group 2A Molybdenum Trioxide Vol 118 2018; NTP Inhalation Bioassay Lung Tumors Rats Mice 10 30 mg/m3; Steel Alloy Ferromolybdenum HDS Catalyst Petroleum Refining; Molybdenum Cofactor Moco Molybdopterin Xanthine Oxidase Sulfite Oxidase Aldehyde Oxidase; Moco Deficiency Neonatal Neurological cPMP Therapy; RDA 45 μg/day UL 2000 μg/day Dietary Molybdate Non-Toxic; EU CLP Carc 2 H351 Repr 2 H361d STOT RE 1 H372 Kidneys; Gout Allopurinol Febuxostat Xanthine Oxidoreductase; OSHA PEL 5 mg/m3 Respirable (2018) — 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 →