Limestone |
Synonyms & Trade Names Calcium carbonate, Natural calcium carbonate [Note: Calcite & aragonite are commercially important natural calcium carbonates.] |
CAS No. 1317-65-3 |
RTECS No. EV9580000 |
DOT ID & Guide |
FormulaCaCO3 |
Conversion |
IDLH N.D.
See: IDLH INDEX |
Exposure Limits NIOSH REL: TWA 10 mg/m3 (total) TWA 5 mg/m3 (resp)
OSHA PEL: TWA 15 mg/m3 (total) TWA 5 mg/m3 (resp) |
Measurement Methods
NIOSH 0500 , 0600
See: NMAM or OSHA Methods |
Physical Description Odorless, white to tan powder. |
MW: 100.1 |
BP: Decomposes |
MLT: 1517-2442°F (Decomposes) |
Sol: 0.001% |
VP: 0 mmHg (approx) |
IP: NA |
Sp.Gr: 2.7-2.9 |
Fl.P: NA |
UEL: NA |
LEL: NA |
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| Noncombustible Solid |
Incompatibilities & Reactivities Fluorine, magnesium, acids, alum, ammonium salts |
Exposure Routes inhalation, skin and/or eye contact |
Symptoms irritation eyes, skin, mucous membrane; cough, sneezing, rhinorrhea (discharge of thin nasal mucus); lacrimation (discharge of tears) |
Target Organs Eyes, skin, respiratory system |
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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
Skin: Soap wash
Breathing: Fresh air
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Respirator Recommendations Not available.
Important additional information about respirator selection |
| See also: INTRODUCTION
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