Agent Name

Barium sulfate

CAS Number




Major Category



Actybaryte; Artificial barite; Artificial heavy spar; BA147; BF 1 (salt); BF 10 (sulfate); Bakontal; Bar-Test; Baraflave; Baricon; Baridol; Barii sulphas; Barite; Baritogen deluxe; Baritop; Baritop 100; Baritop G Powder; Baritop P; Barium 100; Barium Andreu; Barium sulfate; Barium sulfate (1:1); Barium sulfate (BaSO4); Barium sulfuricum; Barium sulphate; Barobag; Barocat; Barodense; Baroloid; Barosperse; Barosperse 110; Barosperse II; Barotrast; Baryta White; Barytes; Barytes 22; Barytgen; Baryum (sulfate de); Baryx Colloidal; Baryxine; Basofor; Bayrites; Blanc fixe; C.I. 77120; C.I. Pigment White 21; CI 77120; CI Pigment white 21; Citobaryum; Colonatrast; Danobaryt; E-Z Preparations; E-Z-AC; E-Z-Cat Concentrate; E-Z-HD; E-Z-Paque; E-Z-Paste esophageal cream; Enamel White; EneCat; EneMark; EneSet; EntroBar; Epi-C; Epi-Stat 57; Epi-Stat 61; Esopho-CAT; Esophotrast; Esophotrast esophageal cream; Eweiss; Finemeal; Gastropaque-S; Gel-Unix; HD 200 Plus; HD 85; HiTone; Intropaque; Lactobaryt; Liquibarine; Liquid Barosperse; Liquid E-Z-Paque; Liquid Polibar; Liquid Polibar Plus; Liquid Sol-O-Pake; Liquipake; Macropaque; Microbar; Microfanox; Micropaque; Micropaque RD; Microtrast; Mikabarium B; Mikabarium F; Mixobar; Mixture III; Neobalgin; Neobar; Novopaque; Oesobar; Oratrast; Permanent White; Pigment White 22; Polibar; Precipitated barium sulphate; PrepCat; Radimix Colon; Radio-Baryx; Radiobaryt; Radiopaque; Raybar; Readi-CAT; Readi-CAT 2; Recto Barium; Redi-Flow; Rugar; SS 50; Sol-O-Pake; Solbar; Sparkle Granules; Sulfuric acid, barium salt (1:1); Supramike; Suspobar; Tixobar; TomoCat 1000 Concentrate; TomoCat Concentrate; TonoJug 2000; Tonopaque; Topcontral; Travad; Ultra-R; Umbrasol A; Unibaryt; Unit-Pak; Veri-O-Pake; X-Opac; Xylocaine Viscous; [ChemIDplus]


Metals, Inorganic Compounds


White or yellowish, odorless powder; [NIOSH] Insoluble in water; [HSDB]


Used in paper, paints, textiles, plastics, batteries, and x-ray contrast dye; [HSDB]


TLV Basis: Pneumoconiosis; "Therefore, because barium sulfate is a relatively low toxicity particle, but high levels of particles can cause inflammation or a benign pneumoconiosis, a TLV-TWA of 5 mg/m3 or inhalable particulate matter containing no asbestos and < 1% crystalline silica is recommended." [ACGIH] See the disease "Pneumoconioses, benign."

Reference Link

NIOSH Occupational Health Guidelines for Chemical Hazards: Barium sulfate

Exposure Assessment
Skin Designation (ACGIH)

Insufficient data




5 mg/m3, inhalable fraction of aerosol (containing no asbestos and < 1% crystalline silica)


15 mg/m3(total dust), 5 mg/m3(respirable fraction)


4 mg/m3(inhalable fraction), 1.5 mg/m3(respirable fraction)

Links to Other NLM Databases
Health Studies

Human Health Effects from Hazardous Substances Data Bank:

Toxicity Information


Chemical Information

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Biomedical References

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Related Information in HazMap

Occupational diseases associated with exposure to this agent:


Industrial Processes with risk of exposure: