E-Limit

Magnesium oxide, Respirable dust and fume, as Mg

CAS Number

1309-48-4

Last Revised

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TWA Limit

3 mg/m3

STEL

10 mg/m3

Ceiling Limit

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Basis of B.C. Exposure Limit
Minimize the potential for:
  • Upper respiratory tract irritation
  • Metal fume fever
  • Note: There may be other potential health effects; refer to ACGIH TLV Documentation and other relevant references.
Synonyms:

MgO

IDLH:

750 mg/m3

 (Source: NIOSH)
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Ensure no workers are exposed to a substance that exceeds the exposure limits in accordance with OHSR 5.48.