bismuth powder bismuth needle bismuth granule, CAS No. 7440-69-9

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7440-69-9

Catalog No. EBD2156698

CAS 7440-69-9

Name bismuth powder bismuth needle bismuth granule

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Basic Information

Synonyms: Bismuth Bismuthmetalpowder BismuthPowder[KP] Bismuth,elemental bismuthpowderbismuthneedlebismuthgranule

Molecular Formula: Bi

Molecular Weight: 208.98

MDL Number: MFCD00134033

Categories: Materials Chemistry > Inorganic and Functional Nanomaterials > Metal Nanoparticle and Alloy Precursors Synthetic Chemistry > Basic Synthetic Reagents > Inorganic Compounds and Metal Salts

Product Description:

Bismuth (Bi, CAS 7440-69-9) is a post-transition metal with atomic number 83. It is a brittle, silvery-white metal with a pinkish tinge and is the most naturally diamagnetic element. It has a relatively low melting point of 271.5°C and exhibits low thermal and electrical conductivity. Its primary applications are in materials science and industrial chemistry. Bismuth is a key component in low-melting-point alloys (e.g., Wood's metal, fusible alloys for fire sprinklers and electrical fuses) and as a non-toxic replacement for lead in plumbing, solders, and ammunition. In the chemical industry, bismuth compounds serve as catalysts (e.g., for acrylic fiber production and in the Mannich reaction) and as precursors for pigments (bismuth vanadate yellow). Bismuth subnitrate and subsalicylate are used in pharmaceuticals for gastrointestinal treatments. Bismuth is also important in electronics (thermoelectric materials, semiconductors) and as a precursor for bismuth-based nanomaterials with applications in catalysis, sensing, and biomedical fields. It is considered one of the least toxic heavy metals, contributing to its use in "green" replacements for more hazardous materials like lead and mercury.

Physical Properties

Melting Point: 271 °C(lit.)

Boiling Point: 1560 °C(lit.)

Density: 9.8 g/mL at 25 °C(lit.)

Solubility: insoluble

Storage: Flammables area

Safety Information

Packing Level: II

Hazard Category: 4.1

Transport Codes: 3089

Analytical Data

Appearance: silver-grey or reddish metal, or black powder