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Description of key information

Calcium magnesium oxide is not acutely toxic via the oral, dermal, or inhalation route.

Key value for chemical safety assessment

Acute toxicity: via oral route

Endpoint conclusion
Dose descriptor:
LD50
Value:
2 000 mg/kg bw

Additional information

In an acute oral toxicity test in rats with calcium magnesium oxide, no deaths occurred at the limit dose of 2000 mg/kg bw. Therefore, the LD50 is >2000 mg/kg bw.

An acute dermal toxicity study with calcium magnesium oxide is considered to be scientifically unjustified.

An acute inhalation toxicity study with calcium magnesium oxide is considered to be scientifically unjustified.

Justification for classification or non-classification

The available information indicates that calcium magnesium oxide is not acutely toxic or harmful. Therefore, classification of calcium magnesium oxide for acute toxicity is not warranted.

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