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Barium sulfate

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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) See Appendix G
Measurement Methods
NIOSH 0500 , 0600
See: NMAM or OSHA Methods
Physical Description
White or yellowish, odorless powder.
Molecular Weight
233.4
Boiling Point
2912°F (Decomposes)
Melting Point
2876°F
Solubility
(64°F): 0.0002%
Vapor Pressure
0 mmHg (approx)
Ionization Potential
NA
Specific Gravity
4.25-4.5
Flash Point
NA
Upper Explosive Limit
NA
Lower Explosive Limit
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   ICSC CARD: 0827
Page last reviewed: October 30, 2019
Content source: National Institute for Occupational Safety and Health