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CAS NUMBER: 7727-43-7
EC NUMBER: 231-784-4
MOLECULAR FORMULA: BaSO4
MOLECULAR WEIGHT: 233.39
Barium sulfate is a white crystalline solid that is odorless and insoluble in water.
Barium sulfate occurs as the mineral barite, which is the main commercial source of barium and materials prepared from it.
The white opaque appearance and its high density are exploited in its main applications.
Barium Sulfate is the sulfate salt of barium, an alkaline, divalent metal.
Barium sulfate is quite insoluble in water, and is used as a radiopaque agent to diagnose gastrointestinal medical conditions.
Barium sulfate is taken by mouth or given rectally.
Barium sulfate appears as white or yellowish odorless powder or small crystals.
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.
Barium sulfate is a metal sulfate with formula BaO4S.
Virtually insoluble in water at room temperature, it is mostly used as a component in oil well drilling fluid it occurs naturally as the mineral barite.
Barium sulfate has a role as a radioopaque medium.
Barium sulfate is a barium salt and a metal sulfate.
Barium sulfate is a contrast agent.
Barium sulfate works by coating the inside of your esophagus, stomach, or intestines which allows them to be seen more clearly on a CT scan or other radiologic (x-ray) examination.
Barium sulfate is used to help diagnose certain disorders of the esophagus, stomach, or intestines.
Barium sulfate may also be used for purposes not listed in this medication guide
Barium sulfate is used to help diagnose or find problems in the esophagus, stomach, and bowels.
Barium sulfate is an inorganic compound with the chemical formula BaSO4.
Barium sulfate occurs in nature as the mineral barite.
Barium sulfate is also used in various manufacturing applications and mixed into heavy concrete to serve as a radiation shield 3.
Barium sulfate is used as a contrast agent in diagnostic x-ray procedures.
Therapeutic advantages of barium sulfate in diagnostic procedures include both its low water solubility and high level of clearance from the body.
Barium sulfate, BaSO4, is made by reacting barium hydroxide and other barium sources with sulfuric acid and has a long history as a translucent white pigment.
Barium sulfate can be formed in various shapes such as planar, starred, or spherical structures depending on the formulation condition, especially the supersaturation of its barium source, and the internal pore size also changes.
Planar barium sulfate shows especially high lubricity, and when applied to the skin it not only has a smooth feeling but also has a high light-scattering property, showing a soft-focus effect that makes small wrinkles and pores less visible.
Barium sulfate is a soft crystalline solid.
Barium sulfate is a rhombic crystal.
The pure salt is white but the color of the mineral “barite” can vary between red, yellow, gray or green, depending on impurities.
Barium sulfates density is 4.50 g/cm3 and its refractive index is 1.64.
Barium sulfate melts around 1580 °C but decomposes above 1600 °C.
Barium sulfates hardness is 4.3 to 4.6 Mohs.
Barium sulfate is virtually insoluble in water (285 mg/l at 30 °C) and insoluble in alcohol.
Barium sulfates Ksp is 1.1 × 10–10. It is soluble in concentrated sulfuric acid.
Barium sulfate is an odorless, white crystalline solid.
Used on its own or in tandem with TiO2 and color pigments, it can bring a range of benefits to the formulation of coatings and the production of plastics.
Barium Sulfate is a moderately water and acid soluble Barium source for uses compatible with sulfates.
Sulfate compounds are salts or esters of sulfuric acid formed by replacing one or both of the hydrogens with a metal.
Most metal sulfate compounds are readily soluble in water for uses such as water treatment, unlike fluorides and oxides which tend to be insoluble.
Additives that prevent chemical attack on a metal surface.
Barium Sulfate group additives repel water and help neutralize the acidic reaction by-products of corrosion on the lubricating surface.
Barium Sulfate products are typically used on a variety of metals.
Barium sulfate is soluble in high molecular weight over-base solvents and most petroleum (or synthetic) base stocks, insoluble in water.
Barium sulfate is recommended for verification of solubility in intended base stocks and compatibility with other additives.
Barium Sulfate is a premium rust inhibitor for industrial oils, greases, rust inhibitors and metalworking specialties.
Barium Sulfate has excellent water resistance properties.
Barium Sulfate does not leave any stains on metal surfaces.
Barium Sulfate is widely used in gear oils and greases.
Barium Sulfate is recommended for formulations where high staining - rust protection is desired.
Barium Sulfate can be used to formulate greases, hydraulic fluids, slurry oils and other industrial products.
An insolublewhite solid, BaSO4, that occurs naturallyas the mineral barytes (orheavy spar) and can be prepared as aprecipitate by adding sulphuric acidto barium chloride solution; r.d. 4.50;m.p. 1580°C.
The rhombic formchanges to a monoclinic form at1149°C.
Barium Sulfate is used as a raw materialfor making other barium salts, as apigment extender in surface coatingmaterials (called blanc fixe), andin the glass and rubber industries.Barium compounds are opaque toX-rays, and a suspension of the sulphatein water is used in medicine toprovide a contrast medium for X-raysof the stomach and intestine.
Althoughbarium compounds are extremelypoisonous, the sulphate issafe to use because it is very insoluble.
Barium Sulfate is a mineral composed of barium sulfate.
Barium Sulfate is usually white or colorless, sometimes it can be yellow or gray.
Barium Sulfate is the main source of barium.
Barium Sulfates radiant form is sometimes called the Bologna Stone.
Barium Sulfate generally occurs in lead-zinc veins in limestones, hot spring deposits, and with hematite ore.
Barium Sulfate is often found with anglesite and celestite minerals.
The name Barium Sulfate is derived from the Greek word βαρύς (heavy).
USES OF BARIUM SULFATE:
About 80% of the world's barium sulfate production, mostly purified mineral, is consumed as a component of oil well drilling fluid.
Barium Sulfate increases the density of the fluid, increasing the hydrostatic pressure in the well and reducing the chance of a blowout.
Barium sulfate in suspension is frequently used medically as a radiocontrast agent for X-ray imaging and other diagnostic procedures.
Barium Sulfate is most often used in imaging of the GI tract during what is colloquially known as a "barium meal".
Barium Sulfate is administered orally, or by enema, as a suspension of fine particles in a thick milk-like solution (often with sweetening and flavoring agents added).
Although barium is a heavy metal, and its water-soluble compounds are often highly toxic, the low solubility of barium sulfate protects the patient from absorbing harmful amounts of the metal.
Barium sulfate is also readily removed from the body, unlike Thorotrast, which it replaced.
Due to the relatively high atomic number of barium, its compounds absorb X-rays more strongly than compounds derived from lighter nuclei.
The majority of synthetic barium sulfate is used as a component of white pigment for paints.
Barium Sulfate is almost transparent, and is used as a filler or to modify consistency.
One major manufacturer of artists' oil paint sells "permanent white" that contains a mixture of titanium white pigment (TiO2) and barium sulfate.
Barium Sulfate is the inorganic pigment called lithopone.
In photography Barium Sulfate is used as a coating for certain photographic papers.
A thin layer of barium sulfate called baryta is first coated on the base surface of most photographic paper to increase the reflectiveness of the image, with the first such paper introduced in 1884 in Germany.
The light-sensitive silver halide emulsion is then coated over the baryta layer.
The baryta coating limits the penetration of the emulsion into the fibers of the paper and makes the emulsion more even, resulting in more uniform blacks.
More recently, baryta has been used to brighten papers intended for ink-jet printing.
Barium sulfate is commonly used as a filler for plastics to increase the density of the polymer in vibrational mass damping applications.
In polypropylene and polystyrene plastics, it is used as a filler in proportions up to 70%.
Barium Sulfate has an effect of increasing acid and alkali resistance and opacity.
Such composites are also used as X-ray shielding materials due to their enhanched radio-opacity.
For some particular applications, composites with high mass fraction of barium sulfate may be preferred to the more commonly used steel shields.
Barium sulfate is used in soil testing. Tests for soil pH and other qualities of soil use colored indicators, and small particles from the soil can cloud the test mixture and make it hard to see the color of the indicator.
Barium sulfate added to the mixture binds with these particles, making them heavier so they fall to the bottom, leaving a clearer solution.
In colorimetry, barium sulfate is used as a near-perfect diffuser when measuring light sources.
In metal casting, the moulds used are often coated with barium sulfate in order to prevent the molten metal from bonding with the mould.
Barium Sulfate is also used in brake linings, anacoustic foams, powder coatings, and root canal filling.
Barium sulfate is an ingredient in the "rubber" pellets used by Chilean police.
This together with silica helps the pellet attain a 96.5 shore A hardness.
As barium sulfate has a high melting point and is insoluble in water, it is used as a release material in casting of copper anode plates.
The anode plates are cast in copper molds, so to avoid the direct contact of the liquid copper with the solid copper mold, a suspension of fine barium sulfate powder in water is used as a coating on the mold surface.
Thus, when the molten copper solidifies in form of an anode plate it can be easily released from its mold.
Barium sulfate mixtures are used as white pigment for paints.
In oil paint, barium sulfate is almost transparent, and is used as a filler or to modify consistency.
One major manufacturer of artists’ oil paint sells “permanent white” that contains a mixture of titanium white pigment and barium sulfate.
Barite is widely distributed in nature and occurs as the mineral barite (also known as barytes or heavy spar).
Barium Sulfate often is associated with other metallic ores, such as fluorspar. Barites containing over 94% BaSO4 can be processed economically.
Barite has many commercial applications.
Barium Sulfate is used as natural barite, or precipitated BaSO4.
The precipitated salt in combination with equimolar amount of co-precipitated zinc sulfide formerly was used as a white protective coating pigment, known as lithophone.
Similarly, in combination with sodium sulfide, it is used to produce fine pigment particles of uniform size, known as blanc fixe.
Natural barite, however, has greater commercial application than the precipitated salt.
Barium Sulfate is used as drilling mud in oil drilling to lubricate and cool the drilling bit, and to plaster the walls of the drill hole to prevent caving.
Barium Sulfate is used as a filler in automotive paints, plastics and rubber products.
Barium Sulfate also is used in polyurethane foam floor mats; white sidewall rubber tires; and as a flux and additive to glass to increase the refractive index.
Other chemical applications of barium sulfate are as the opaque ingredient in a barium meal for x-ray diagnosis; as a pigment for photographic paper; and to prepare many barium salts.
USAGE AREAS OF BARIUM SULFATE:
Barium sulfate is commercially known as Barite.
Barium Sulfate is the main barium ore.
One of the places where barite is used most is paints.
When barite is mixed with zinc sulfide, a white paint called “lithopone” is obtained.
Barium Sulfate is used in oil paints, in oil paints used by artists, titanium is mixed with white pigment.
In photography, Barium Sulfate is used in some photographic paper coatings, paper is used in polishing.
In its pure state, barite is either colorless or turns white, yellow, or red.
Barium Sulfate is quite heavy for a soil mineral. The name means "heavy".
The use of barite is generally divided into three: drilling (90%), chemical (7%) and filling material (3%).
Barium Sulfate, which is used as heavy cement, is crushed and sieved to the same size.
Most of the barite is ground and used as an additive in industrial products or as a weight-bearing additive when drilling oil or natural gas wells.
When lit, their flame emits green light; Due to this feature, Barium Sulfate is used in pyrotechnic formulas (for applications that give color such as fireworks).
Barium Sulfate is used as a filler in polypropylene and polystyrene plastics, increases acidity and alkali resistance and gives a dull effect.
Barium Sulfate is also used to make paper.
Although barite contains the heavy metal barium, Barium Sulfate is not considered a toxic substance by most governments because of its high solubility.
PROPERTIES OF BARIUM SULFATE:
-Compound Formula: BaO4S
-Molecular Weight: 233.39
-Appearance: White
-Melting Point: 1,345° C (2,453° F)
-Boiling Point: 1,600° C (2,912° F)
-Density: 4.50 g/cm3
-Exact Mass: 233.857
-Monoisotopic Mass: 233.857
APPLICATION OF BARIUM SULFATE:
-Excellent anti-stain rust prevention.
-Highly effective water separation even at low concentrations.
-Excellent compatibility with other additives.
-Barium Sulfate is effective in acidic environments.
-Excellent solubility in a wide variety of base stocks and solvents.
SYNONYM:
Barite
7727-43-7
Baritop
Barosperse
Barotrast
Esophotrast
Liquipake
Macropaque
Micropaque
Microtrast
Radiobaryt
Radiopaque
Barium sulphate
EntroBar
EneMark
EneCat
Blanc fixe
