Is Cobalt sulfate safe for babies and kids?
Severe risk for kidsInfants are extremely vulnerable to Cobalt sulfate 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 cobalt sulfate?
The IUPAC name is cobalt(2+) sulfate.
Also known as: cobalt(2+) sulfate, Cobaltous sulfate, Cobalt(II) sulfate, Cobalt Brown.
- IUPAC name
- cobalt(2+) sulfate
- CAS number
- 10124-43-3
- Molecular formula
- CoO4S
- Molecular weight
- 155.0 g/mol
- SMILES
- [O-]S(=O)(=O)[O-].[Co+2]
- PubChem CID
- 24965
Risk for babies
Severe riskInfants are extremely vulnerable to Cobalt sulfate 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.
Risk for pregnant and nursing people
Severe riskPregnancy increases vulnerability to Cobalt sulfate. 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.
Regulatory consensus
12 regulatory and scientific bodies have classified Cobalt sulfate. The classifications differ — that's the data.
| Agency | Year | Classification | Notes |
|---|---|---|---|
| IARC | 2006 | Group 1 | |
| US EPA | 1991 | Group D – not classifiable as to human carcinogenicity (cobalt, soluble salts); hard metals lung cancer data under separate review | |
| EPA CTX / NTP RoC | — | Reasonably Anticipated to be a Human Carcinogen | |
| EPA CTX / CalEPA | — | Known human carcinogen | |
| EPA CTX / Genetox | — | Genotoxicity: positive (single report) (Ames: None, 1 positive / 0 negative reports) | |
| EPA CTX / Genetox | — | Genotoxicity: positive (single report) (Ames: None, 1 positive / 0 negative reports) | |
| EPA CTX / Skin-Eye | — | Skin Sensitization: Skin Sens. 1 (score: high) | |
| EPA CTX / Skin-Eye | — | Skin Sensitization: Skin sensitization - Category 1 (score: high) | |
| EPA CTX / Skin-Eye | — | Skin Sensitization: Category 1 (score: high) | |
| EPA CTX / Skin-Eye | — | Eye Irritation: Category 6.4A (Category 2A) (score: high) | |
| EPA CTX / Skin-Eye | — | Skin Irritation: Category 6.3A (Category 2) (score: high) | |
| EPA CTX / Skin-Eye | — | Skin Sensitization: Category 6.5B (Category 1) (score: moderate) |
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 cobalt sulfate
- 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 Cobalt sulfate:
-
Enzyme or biocatalysts where applicable
Trade-offs: Temperature/pH sensitivity. Higher cost for some applications.Relative cost: 2-5×
Frequently asked questions
Is cobalt sulfate safe for kids?
Infants are extremely vulnerable to Cobalt sulfate 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 cobalt sulfate?
Cobalt sulfate 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 cobalt sulfate?
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 cobalt sulfate?
Cobalt sulfate has been classified by 12 agencies including IARC, US EPA, EPA CTX / NTP RoC, EPA CTX / CalEPA, 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 Cobalt sulfate in the baby app
Look up products containing cobalt sulfate, compare to alternatives, and explore the full data record.
Open in baby View raw API dataSources (3)
- IARC Monographs Volume 86: Cobalt in Hard Metals and Cobalt Sulfate, Gallium Arsenide, Indium Phosphide and Vanadium Pentoxide — Group 1 (Hard Metals, Cobalt Sulfate); Lung Cancer; Hard Metal Lung Disease; Giant Cell Pneumonitis (2006) — iarc_monograph
- NIOSH Cobalt: Hard Metal Lung Disease Surveillance; REL 0.05 mg/m³; Biological Monitoring; Urine Cobalt; Battery Manufacturing Exposure Assessment (2010) — regulatory
- ATSDR Toxicological Profile: Cobalt — Hard Metal Disease; Cardiomyopathy; Metal-on-Metal Hip Implant Cobaltism; DRC Mining; Lithium-Ion Battery Cathode Exposures (2004) — 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 →