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BARIUM SULFATE

6.1 - Poison
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The Chemical Identifier fields include common identification numbers, the NFPA diamond U.S. Department of Transportation hazard labels, and a general description of the chemical. The information in CAMEO Chemicals comes from a variety of data sources.
CAS Number UN/NA Number
  • 7727-43-7
DOT Hazard Label USCG CHRIS Code
  • Poison
none
NIOSH Pocket Guide International Chem Safety Card
Barium sulfateexternal link
NFPA 704
data unavailable
General Description
White or yellowish odorless powder or small crystals. Mp: 1580°C (with decomposition). Density: 4.25 -4.5 g cm-3. Insoluble in water, dilute acids, alcohol. Soluble in hot concentrated sulfuric acid. Used as a weighting mud in oil-drilling, in paints, paper coatings, linoleum, textiles, rubber. Administered internally ("barium cocktail") as a radio-opaque diagnostic aid.

The Hazard fields include special hazard alerts air and water reactions, fire hazards, health hazards, a reactivity profile, and details about reactive groups assignments and potentially incompatible absorbents. The information in CAMEO Chemicals comes from a variety of data sources.
Reactivity Alerts
none
Air & Water Reactions
No rapid reaction with air. No rapid reaction with water.
Fire Hazard
Excerpt from ERG Guide 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]:

Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Some are oxidizers and may ignite combustibles (wood, paper, oil, clothing, etc.). Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated. For electric vehicles or equipment, ERG Guide 147 (lithium ion batteries) or ERG Guide 138 (sodium batteries) should also be consulted. (ERG, 2020)
Health Hazard
Excerpt from NIOSH Pocket Guide for Barium sulfateexternal link:

Exposure Routes: Inhalation, skin and/or eye contact

Symptoms: Irritation eyes, nose, upper respiratory system; benign pneumoconiosis (baritosis)

Target Organs: Eyes, respiratory system (NIOSH, 2022)
Reactivity Profile
BARIUM SULFATE is non-combustible and non-toxic. Emits toxic sulfur oxides when heated to decomposition. Can act as an oxidizing agent, but usually does not. Reacts with reducing agents such as potassium, phosphorus or aluminum (heating with aluminum can cause an explosion).
Belongs to the Following Reactive Group(s)
Potentially Incompatible Absorbents

No information available.

The Response Recommendation fields include isolation and evacuation distances, as well as recommendations for firefighting, non-fire response, protective clothing, and first aid. The information in CAMEO Chemicals comes from a variety of data sources.
Isolation and Evacuation
Excerpt from ERG Guide 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]:

IMMEDIATE PRECAUTIONARY MEASURE: Isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids.

SPILL: Increase the immediate precautionary measure distance, in the downwind direction, as necessary.

FIRE: If tank, rail car or tank truck is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions. (ERG, 2020)
Firefighting
Excerpt from ERG Guide 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]:

SMALL FIRE: Dry chemical, CO2 or water spray.

LARGE FIRE: Dry chemical, CO2, alcohol-resistant foam or water spray. If it can be done safely, move undamaged containers away from the area around the fire. Dike runoff from fire control for later disposal.

FIRE INVOLVING TANKS OR CAR/TRAILER LOADS: Fight fire from maximum distance or use unmanned master stream devices or monitor nozzles. Do not get water inside containers. Cool containers with flooding quantities of water until well after fire is out. Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank. ALWAYS stay away from tanks engulfed in fire. (ERG, 2020)
Non-Fire Response
Excerpt from ERG Guide 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]:

ELIMINATE all ignition sources (no smoking, flares, sparks or flames) from immediate area. Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. Prevent entry into waterways, sewers, basements or confined areas. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. DO NOT GET WATER INSIDE CONTAINERS. (ERG, 2020)
Protective Clothing
Excerpt from NIOSH Pocket Guide for Barium sulfateexternal link:

Skin: PREVENT SKIN CONTACT - Wear appropriate personal protective clothing to prevent skin contact.

Eyes: PREVENT EYE CONTACT - Wear appropriate eye protection to prevent eye contact.

Wash skin: DAILY - The worker should wash daily at the end of each work shift, and prior to eating, drinking, smoking, etc.

Remove: No recommendation is made specifying the need for removing clothing that becomes wet or contaminated.

Change: No recommendation is made specifying the need for the worker to change clothing after the workshift.

Provide:
• EYEWASH - Eyewash fountains should be provided in areas where there is any possibility that workers could be exposed to the substances; this is irrespective of the recommendation involving the wearing of eye protection.
• QUICK DRENCH - Facilities for quickly drenching the body should be provided within the immediate work area for emergency use where there is a possibility of exposure. [Note: It is intended that these facilities provide a sufficient quantity or flow of water to quickly remove the substance from any body areas likely to be exposed. The actual determination of what constitutes an adequate quick drench facility depends on the specific circumstances. In certain instances, a deluge shower should be readily available, whereas in others, the availability of water from a sink or hose could be considered adequate.] (NIOSH, 2022)
DuPont Tychem® Suit Fabrics
No information available.
First Aid
Excerpt from NIOSH Pocket Guide for Barium sulfateexternal link:

Eye: IRRIGATE IMMEDIATELY - If this chemical contacts the eyes, immediately wash (irrigate) the eyes with large amounts of water, occasionally lifting the lower and upper lids. Get medical attention immediately.

Skin: SOAP WASH - If this chemical contacts the skin, wash the contaminated skin with soap and water.

Breathing: RESPIRATORY SUPPORT - If a person breathes large amounts of this chemical, move the exposed person to fresh air at once. If breathing has stopped, perform artificial respiration. Keep the affected person warm and at rest. Get medical attention as soon as possible.

Swallow: MEDICAL ATTENTION IMMEDIATELY - If this chemical has been swallowed, get medical attention immediately. (NIOSH, 2022)

The Physical Property fields include properties such as vapor pressure and boiling point, as well as explosive limits and toxic exposure thresholds The information in CAMEO Chemicals comes from a variety of data sources.
Chemical Formula:
  • BaSO4
Flash Point: data unavailable
Lower Explosive Limit (LEL): data unavailable
Upper Explosive Limit (UEL): data unavailable
Autoignition Temperature: data unavailable
Melting Point: 2876°F (NIOSH, 2022)
Vapor Pressure: 0 mmHg (approx) (NIOSH, 2022)
Vapor Density (Relative to Air): data unavailable
Specific Gravity: 4.25 to 4.5 (NIOSH, 2022)
Boiling Point: 2912°F at 760 mmHg (Decomposes) (NIOSH, 2022)
Molecular Weight: 233.4 (NIOSH, 2022)
Water Solubility: 0.0002 % at 64°F (NIOSH, 2022)
Ionization Energy/Potential: data unavailable
IDLH: data unavailable

AEGLs (Acute Exposure Guideline Levels)

No AEGL information available.

ERPGs (Emergency Response Planning Guidelines)

No ERPG information available.

PACs (Protective Action Criteria)

Chemical PAC-1 PAC-2 PAC-3
Barium sulfate (7727-43-7) 15 mg/m3 170 mg/m3 990 mg/m3
(DOE, 2018)

The Regulatory Information fields include information from the U.S. Environmental Protection Agency's Title III Consolidated List of Lists, the U.S. Cybersecurity and Infrastructure Security Agency's Chemical Facility Anti-Terrorism Standards, and the U.S. Occupational Safety and Health Administration's Process Safety Management of Highly Hazardous Chemicals Standard List (see more about these data sources).

EPA Consolidated List of Lists

No regulatory information available.

CISA Chemical Facility Anti-Terrorism Standards (CFATS)

No regulatory information available.

OSHA Process Safety Management (PSM) Standard List

No regulatory information available.

This section provides a listing of alternate names for this chemical, including trade names and synonyms.
  • A 15
  • A 15 (INORGANIC COMPOUND)
  • A 200
  • A 200 (SULFATE)
  • ACTYBARYTE
  • AIRWHITE AW 5
  • ARTIFICIAL BARITE
  • B 20HD
  • B 30
  • B 32
  • B 32 (SULFATE)
  • B 33
  • B 33 (SULFATE)
  • B 34
  • B 34 (SULFATE)
  • B 54
  • B 54 (SULFATE)
  • B 55
  • B 55 (SULFATE)
  • BA
  • BA (SULFATE)
  • BAKONTAL
  • BARIACE B 30
  • BARIACE B 54
  • BARIDOL
  • BARIFINE BF 1
  • BARIFINE BF 10
  • BARIFINE BF 1L
  • BARIFINE BF 20
  • BARIFINE BF 21
  • BARIFINE BF 21F
  • BARIFINE BF 40
  • BARITA W 2
  • BARITE
  • BARITE BA
  • BARITE BC
  • BARITE BD
  • BARITOGEN DELUXE
  • BARITOP
  • BARITOP P
  • BARIUM 100
  • BARIUM SALT OF SULFURIC ACID
  • BARIUM SULFATE
  • BARIUM SULFATE (1:1)
  • BARIUM SULFATE (BASO4)
  • BARIUM SULPHATE
  • BAROSPERSE
  • BAROTRAST
  • BARYTA WHITE
  • BARYTES (NATURAL)
  • BARYTES 22
  • BARYTES 290
  • BB-MICRO SP
  • BC
  • BC (INORGANIC COMPOUND)
  • BF 1
  • BF 10
  • BF 1H
  • BF 1L
  • BF 20
  • BF 20P
  • BF 21
  • BF 21F
  • BF 33
  • BF 40
  • BIANCO FISSO
  • BLANC FIX
  • BLANC FIXE
  • BLANC FIXE F
  • BLANC FIXE FX
  • BLANC FIXE HD 80
  • BLANC FIXE K 3
  • BLANC FIXE MICRO
  • BLANC FIXE N
  • BLANC FIXE XR-HX
  • BM 110
  • BMH
  • BMH (SULFATE)
  • BMH 100
  • BMH-D
  • C 14
  • C 14 (INORGANIC COMPOUND)
  • C 300
  • C 300 (SULFATE)
  • C.I. 77120
  • C.I. PIGMENT WHITE 21
  • CHEROKEE BARYTE 290
  • CITOBARYUM
  • DIAMELIA 16
  • E-Z-PAQUE
  • ENAMEL WHITE
  • EWEISS
  • F 8660
  • FINEMEAL
  • HD
  • HD (SULFATE)
  • HEAVY SPAR
  • L 100
  • L 100 (INORGANIC COMPOUND)
  • LACTOBARYT
  • LIQUIBARINE
  • MICROBAR 139
  • MICROPAQUE
  • MIKABARIUM B
  • MIKABARIUM F
  • MIXOBAR
  • NEOBALGIN
  • NEOBAR
  • P 25
  • P 25 (SULFATE)
  • PERMANENT WHITE
  • PIGMENT WHITE 21
  • PRECIPITATED BARIUM SULFATE
  • PRONTOBARIO
  • SACHTOPERSE HP
  • SACHTOPERSE HU
  • SACHTOPERSE HU-N SPEZIAL
  • SOLBAR
  • SPARMITE
  • SPEZIALSORTE AI
  • SS 50
  • SS 50 (SULFATE)
  • ST
  • ST (SULFATE)
  • SUPRAMIKE
  • TH
  • UD
  • UD (FILLER)
  • UMBRASOL A
  • UNIBARYT
  • W 1

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