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Barium sulfate

Synonyms & Trade Names
Artificial barite, Barite, Barium salt of sulfuric acid, Barytes (natural)
CAS No.
7727-43-7
RTECS No.
CR0600000
DOT ID & Guide
1564 154 (barium compound, n.o.s.)
Formula
BaSO4
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
White or yellowish, odorless powder.
MW:
233.4
BP:
2912°F (Decomposes)		 MLT: 2876°F Sol(64°F): 0.0002%
VP:
0 mmHg (approx)
IP:
NA
Sp.Gr:
4.25-4.5
Fl.P:
NA
UEL:
NA
LEL:
NA
Noncombustible Solid
Incompatibilities & Reactivities
Phosphorus, aluminum [Note: Aluminum in the presence of heat can cause an explosion.]
Exposure Routes
inhalation, skin and/or eye contact
Symptoms
irritation eyes, nose, upper respiratory system; benign pneumoconiosis (baritosis)
Target Organs
Eyes, respiratory system
Personal Protection/Sanitation
(See protection codes)
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: Daily
Remove: No recommendation
Change: No recommendation
Provide: Eyewash, Quick drench
First Aid
(See procedures)
Eye: Irrigate immediately
Skin: Soap wash
Breathing: Respiratory support
Swallow: Medical attention immediately
Respirator Recommendations

Not available.

Important additional information about respirator selection

See also: INTRODUCTION   See ICSC CARD: 0827
 

Order NIOSH Publications

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