Bismuth Subnitrate CAS 1304-85-4

Chemical Name: Bismuth Subnitrate

Synonymous Names: Bismuth(III) Subnitrate; Bismuth Oxynitrate; Basic Bismuth Nitrate; Bismuthyl Nitrate; Bismuth Hydroxide Nitrate Oxide

CAS No.: 1304-85-4

Molecular Formula: Bi₅O(OH)₉(NO₃)₄

Molecular Weight: 1461.99 g/mol

Assay Bi₂O₃: ≥79.0%

EINECS No.: 215-136-8

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Description
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Bismuth Subnitrate is a basic bismuth nitrate with an oxyhydroxynitrate structure, used for pharmaceutical manufacturing and technical bismuth formulations.

Contact our sales team for other bismuth salt products: Bismuth Subcarbonate, Bismuth Oxychloride, Bismuth Trioxide, Bismuth Sulfide and other bismuth salts.

Product Specification

Item	Specification
Product name	Bismuth Subnitrate
CAS number	1304-85-4
Appearance	White or almost white powder
Identification	Positive for bismuth and nitrate
Assay, dried basis	≥79.0% as Bi₂O₃
Loss on drying	≤3.0%
Chloride	≤0.035%
Carbonate	≤0.005%
Arsenic	≤8 ppm
Alkalies and alkaline earth metals	≤0.5%
Density	4.93 g/cm³
Water solubility	Practically insoluble
Ethanol solubility	Practically insoluble
Mineral-acid solubility	Dissolves with decomposition

Bismuth Subnitrate Applications

Our Pharmaceutical-grade Bismuth Subnitrate is a raw pharmaceutical material used as an active bismuth ingredient in selected gastrointestinal and topical products.
Bismuth Subnitrate can be used as a bismuth source in the production of other bismuth compounds. It is also used as a reagent and catalyst in selected laboratory and chemical processes.