Barium manufacturers and suppliers

Properties

Melting point:: 725 °C(lit.)

Boiling point:: 1640 °C(lit.)

Density: 3.6 g/mL at 25 °C(lit.)

storage temp.: water-free area

solubility: reacts with H2O; slightly soluble in ethanol

form: rod

color: Silver-gray

Specific Gravity: 3.51

PH: 0.5 (20°C in H2O)

Flame Color: Light apple green

Resistivity: 50.0 μΩ-cm, 20°C

Electrical Conductivity: 2.9× 10⁶S/m

Water Solubility: soluble with H2 evolution in cold H2O and hot H2O; slightly soluble alcohol; insoluble benzene [CRC10]

Thermal Conductivity: 18 W/(m·K)

Specific Heat Capacity: Cp(crystal): 0.2 J/(g·K); Cp(gas): 0.15 J/(g·K), at 25℃

Sensitive: air sensitive, moisture sensitive

Merck: 13,967

Exposure limits: ACGIH:TLV-TWA 0.5 mg/m3,as Ba
OSHA:PEL-TWA 0.5 mg/m3
NIOSH:REL-TWA 0.5 mg/m3

Stability:: Stability Reacts vigorously or violently with acids, water, tetrachloromethane, small halogenated hydrocarbons. Should be stored under an inert material such as petroleum ether to exclude air. Flammable.

InChI: 1S/Ba

InChIKey: DSAJWYNOEDNPEQ-UHFFFAOYSA-N

SMILES: [Ba]

Shear Modulus: 5.00 GPa, Calculated

Modulus of Elasticity: 12.8 GPa

Poissons Ratio: 0.28

Bulk Modulus: 10.2 GPa

CAS DataBase Reference: 7440-39-3(CAS DataBase Reference)

EPA Substance Registry System: Barium (7440-39-3)

Safety Information

Symbol(GHS): GHS02,GHS05,GHS06

Signal word: Danger

Hazard statements: H228-H260-H301-H314-H318

Precautionary statements: P210-P240-P241-P280-P223-P231+P232-P264-P270-P260-P370+P378-P301+P310-P330-P301+P330+P331-P303+P361+P353-P363-P304+P340-P310-P305+P351+P338-P402+P404-P405-P501

PPE: Eyeshields, Gloves, type P3 (EN 143) respirator cartridges

Hazard Codes: C,Xi,F

Risk Statements: 25-26-34-36/37/38-14/15-11

Safety Statements: 23-26-36-36/37/39-45-43-36/37-16

RIDADR: UN 1400

OEB: C

OEL: TWA: 0.5 mg/m3

WGK Germany: 3

RTECS: CQ8370000

TSCA: TSCA listed

HS Code: 2805 19 10

HazardClass: 4.3

PackingGroup: II

Storage Class: 4.3 - Hazardous materials which set free flammable gases upon contact with water

Hazard Classifications: Acute Tox. 3 Oral
Eye Dam. 1
Flam. Sol. 1
Skin Corr. 1B
Water-react 1

Hazardous Substances Data: 7440-39-3(Hazardous Substances Data)

Toxicity: An element; the heaviest of the stable alkaline earths. Barium sulfate is used as a diagnostic aid in radiology due to its radio-opaqueness and, because of its insolubility and lack of absorption, it is safe barring iatrogenic episodes. Poisoning usually results from deliberate or accidental ingestion of soluble barium compounds. The Ba2+ ion is a muscle poison due to the blocking of the K1 channels of the Na+/K+ pump in cell membranes. Because cases of barium poisoning are accompanied by severe hypokalemia, potassium infusion is an effective antidote. The toxicity of barium compounds depends on their solubility, with the free ion being readily absorbed from gastrointestinal tract or lung, whereas the sulfate is essentially unabsorbed. Thus, administration of soluble sulfates immediately after ingestion is another effective antidote.

IDLA: 50 mg Ba/m3

REACH Registrations: Active

Use

Barium is found in various alloys, paints, soap, paper, photographic chemicals, explosives, and rubber, and is used in the manufacture of ceramics and glass. Some of its compounds are used as mordants in fabric dyeing and in the preparation of phosphors. One major use is in slurry of ground barite (ZnS + BaSO4) for gas and oil drilling. Barium fluorosilicate has been used as an insecticide, and some barium compounds are used as rodenticides. Medicinally, barium sulfate, being very sparingly soluble, is used as a radiopaque contrast material for X-ray diagnostic purposes and other medical imaging uses.