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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
Formula
CaCO3
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
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
Personal Protection/Sanitation
(See protection codes)
Skin: No recommendation
Eyes: No recommendation
Wash skin: No recommendation
Remove: No recommendation
Change: No recommendation
First Aid
(See procedures)
Eye: Irrigate immediately
Skin: Soap wash
Breathing: Fresh air
Respirator Recommendations

Not available.

Important additional information about respirator selection

See also: INTRODUCTION
 
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