CAS 7440-69-9 Bismuth - Catalysts / Alfa Chemistry

Synonyms

Bismuth standard solution, 1 mg/mL Bi, suitable for atomic absorption spectrometry; Bismuth rod; Bismuth, lump, 7 mm max. lump size, weight 100 g, purity 99.999%; KS-0000117N; Bismuth, foil, not light tested, 150x150mm, thickness 0.02mm, permanent polyester support, 99.97%; Bismuth, foil, not light tested, 150x150mm, thickness 0.05mm, permanent polyester support, 99.97%; Bismuth granules, 1-2mm (0.04-0.08in); Bismuth, foil, not light tested, 50x50mm, thickness 0.05mm, permanent polyester support, 99.97%; KSC377C5R; Bismuth, foil, thickness 0.045 mm, size 25 x 25 mm, purity 99.97%;

IUPAC Name

bismuth;

Molecular Weight

208.98g/mol

Molecular Formula

Bi;

Canonical SMILES

[Bi];

InChI

InChI=1S/Bi;

InChI Key

JCXGWMGPZLAOME-UHFFFAOYSA-N;

Melting Point

271 DEG C;519.8°F;

Density

9.78 @ 20 DEG C/4 DEG C;

Solubility

INSOL IN COLD OR HOT WATER; SOL IN NITRIC ACID, AQUA REGIA, HOT SULFURIC ACID;SOL IN CONCENTRATED HYDROCHLORIC ACID;

Storage

Flammables area

Color Form

Gray white soft metal;HEXAGONAL SILVER-WHITE CRYSTALS;GRAYISH WHITE WITH REDDISH TINGE AND BRIGHT METALLIC LUSTER;PINKISH-SILVER, HARD, BRITTLE METAL;

Covalently-Bonded Unit Count

EC Number

231-177-4

Exact Mass

208.98g/mol

Heavy Atom Count

Monoisotopic Mass

208.98g/mol

Other Experimental

POOR CONDUCTOR OF ELECTRICITY; HAS GREATEST HALL EFFECT OF ANY METAL, THAT IS, ITS RESISTANCE INCREASES WHEN PLACED IN A MAGNETIC FIELD;MASS NUMBER (NATURAL ISOTOPES): 209; ATOMIC RADIUS= 1.46 A; IONIC (CRYSTAL) RADII= 1.20(+3)A; ELECTRONEGATIVITY (PAULING SCALE): 1.9;THERMAL CONDUCTIVITY (0.018 CAL/SEC/CC @ 250 DEG C) IS LOWEST OF ALL METALS EXCEPT MERCURY;EXPANDS 3.32% ON SOLIDIFICATION; ATOMIC NUMBER: 83;ORBITAL ELECTRONS: (XE)4F(14)-5D(10)65(2)-6P(3);COLD SOLN OF BI GIVE WHITE PPT: WITH SODIUM HYDROXIDE TURNING YELLOW ON BOILING; WITH HYDROCHLORIC ACID SOL IN EXCESS OF ACID;SENSITIVITY OF ATOMIC ABSORPTION: 0.22 UG/ML FOR 1% ABSORPTION IN AIR/C2H2 MIXTURE AT 2230.6 A;SOLN IN HYDROCHLORIC ACID OR NITRIC ACID YIELD WITH MUCH WATER A WHITE PPT BLACKENED BY HYDROGEN SULFIDES;WHEN HEATED IN AIR IT BURNS WITH A BLUE FLAME, FORMING YELLOW FUMES OF THE OXIDE;ELECTRICAL RESISTIVITY HIGHER IN SOLID THAN IN LIQUID STATE; EXTRUDABLE @ 437 DEG F; BRINELL HARDNESS 7; HIGHLY DIAMAGNETIC (MASS SUSCEPTIBILITY -1.35X10+6);CONDUCTANCE IN SOLID STATE IS ONLY 0.48 OF LIQUID CONDUCTANCE;DULL GRAY POWDER; PARTICLES ARE OF NO GREATER DIAMETER THAN 15 U (0.015 MM); EASILY DISPERSED IN WATER /PRECIPITATED BISMUTH/;

Stability

SUPERFICIALLY OXIDIZED BY AIR, FREQUENTLY BECOMING IRIDESCENT;WHEN HEATED IN AIR IT FORMS BISMUTH TRIOXIDE;

Topological Polar Surface Area

0A^2

UNII

U015TT5I8H

Vapor Pressure

78 mm Hg at 1266 deg C; 7.8 mm at 1053 deg C; 0.78 mm Hg at 893 deg C;<0.1 mmHg;

Application

Bismuth serves several purposes across various industries due to its unique properties as a white, crystalline, and brittle metal with a pinkish hue. Its ability to expand upon solidification and low thermal conductivity make it an essential component in the production of low melting solders and fusible alloys, useful in safety appliances and fire-detection devices. Bismuth's role extends into pharmaceuticals, where it is instrumental in the manufacturing of medication like Pepto-Bismol for gastrointestinal issues. Additionally, its lustrous appearance makes it valuable in the cosmetics industry, enhancing products such as lipsticks and eyeshadows. Its application in the semiconductor industry and as an additive in metals improves machinability, while its exceptional diamagnetic characteristics and high-density shielding capabilities are of significant interest in nuclear research, providing an effective barrier for gamma rays yet allowing thermal neutrons to pass. Furthermore, bismuth's ability to form alloys with a low melting point is leveraged in the creation of permanent magnets, shot and bullets, and in the fabrication of fine castings. Bismuth's diverse applications also include catalytic processes in the production of acrylonitrile and the enhancement of synthetic fibers and rubbers, highlighting its versatility and critical role in technological and industrial advancements.

December 14, 2024

Impressive Performance of Bismuth in Research Applications

Using Alfa Chemistry's Bismuth in our lab was transformative. Its impressive diamagnetic properties and neutron shielding capabilities enhanced our experiments significantly, particularly in nuclear research where precise outcomes are crucial.