Magnesite
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CAS
546-93-0
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MgCO3
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RTECS
OM2470000
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Synonyms & Trade Names
Carbonate magnesium, Hydromagnesite, Magnesium carbonate, Magnesium(II) carbonate [Note: Magnesite is a naturally-occurring form of magnesium carbonate.]
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DOT ID & Guide
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Exposure
Limits
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NIOSH REL: TWA 10 mg/m3 (total) TWA 5 mg/m3 (resp)
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OSHA PEL: TWA 15 mg/m3 (total) TWA 5 mg/m3 (resp)
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IDLH
N.D.
See: IDLH INDEX
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Conversion
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Physical Description
White, odorless, crystalline powder.
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MW: 84.3
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BP: Decomposes
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MLT: 662°F (Decomposes)
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Sol: 0.01%
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VP: 0 mmHg (approx)
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IP: NA
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Sp.Gr: 2.96
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Fl.P: NA
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UEL: NA
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LEL: NA
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Noncombustible Solid
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Incompatibilities & Reactivities
Acids, formaldehyde
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Measurement Methods
NIOSH 0500, 0600
See: NMAM or OSHA Methods
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Personal Protection & Sanitation (See protection codes)
Skin: No recommendation
Eyes: No recommendation
Wash skin: No recommendation
Remove: No recommendation
Change: No recommendation
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First Aid (See procedures)
Eye: Irrigate immediately
Breathing: Fresh air
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Respirator Recommendations
Not available.
Important additional information about respirator selection
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Exposure Routes
inhalation, skin and/or eye contact
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Symptoms
Irritation eyes, skin, respiratory system; cough
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Target Organs
Eyes, skin, respiratory system
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See also: INTRODUCTION See ICSC CARD: 0969
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