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7440-39-3

7440-39-3 structural image
Product Name: Barium
Formula: Ba
Synonyms: Barium element
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CHEMICAL AND PHYSICAL PROPERTIES

Physical Description Barium appears as a silver to white metallic solid. Contact may cause burns to skin, eyes, and mucous membranes. May be toxic by ingestion, inhalation and skin absorption. Used to make other chemicals.
Color/Form Silvery-white, slightly lustrous, body-centered cubic structure
Boiling Point 2984 °F at 760 mmHg (NTP, 1992)
Melting Point 1337 °F (NTP, 1992)
Solubility Reacts with water; slightly soluble in ethanol
Density 3.51 at 68 °F (NTP, 1992) - Denser than water; will sink
Vapor Pressure 10 mmHg at 1920 °F (NTP, 1992)
Stability/Shelf Life The free element oxidizes readily in moist air.
Surface Tension 224 dynes/cm (liq form of barium) at 720 °C in argon atmosphere as determined by bubbler pressure method
Other Experimental Properties Soft, ductile; pyrophoric when finely divided; emits yellow-green color in flame; dissolves in liquid ammonia; electromotive force (aq) barium(2+)/barium = -2.91 Volts
Chemical Classes Metals -> Metals, Inorganic Compounds

SAFETY INFORMATION

Signal word Danger
Pictogram(s)

Flame
Flammables
GHS02

Corrosion
Corrosives
GHS05

Skull and Crossbones
Acute Toxicity
GHS06
GHS Hazard Statements H228:Flammable solids
H260:Substances And Mixtures Which, In Contact With Water,Emit Flammable Gases
H301:Acute toxicity,oral
H314:Skin corrosion/irritation
Precautionary Statement Codes P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
P260:Do not breathe dust/fume/gas/mist/vapours/spray.
P280:Wear protective gloves/protective clothing/eye protection/face protection.
P231+P232:Handle under inert gas. Protect from moisture.
P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.
P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

COMPUTED DESCRIPTORS

Molecular Weight 137.33 g/mol
Hydrogen Bond Donor Count 0
Hydrogen Bond Acceptor Count 0
Rotatable Bond Count 0
Exact Mass 137.905247 g/mol
Monoisotopic Mass 137.905247 g/mol
Topological Polar Surface Area 0 Ų
Heavy Atom Count 1
Formal Charge 0
Complexity 0
Isotope Atom Count 0
Defined Atom Stereocenter Count 0
Undefined Atom Stereocenter Count 0
Defined Bond Stereocenter Count 0
Undefined Bond Stereocenter Count 0
Covalently-Bonded Unit Count 1
Compound Is Canonicalized Yes

PRODUCT INTRODUCTION

description

Barium is a silvery-white metal which exists in nature only in ores containing mixtures of elements. It combines with other chemicals such as sulfur or carbon and oxygen to form barium compounds. Barium compounds are used by the oil and gas industries to make drilling muds. Drilling muds make it easier to drill through rock by keeping the drill bit lubricated. They are also used to make paint, bricks, ceramics, glass, and rubber. Barium sulfate is sometimes used by doctors to perform medical tests and to take x-rays of the gastrointestinal tract.

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