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Heptahydrat siarczanu bizmutu (III)
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Bismuth(III) Sulfate Heptahydrate
Other Names: Bismuth trisulfate heptahydrate, Bismuth sulfate (Bi₂(SO₄)₃·7H₂O)
CAS Number: 7787-68-0
Sum Formula: Bi₂(SO₄)₃·7H₂O
Molar Mass: 704.18 g/mol
Appearance: White crystalline solid
Bismuth(III) sulfate heptahydrate is an inorganic salt composed of bismuth ions in the +3 oxidation state coordinated with sulfate anions and water of crystallization. It is typically used in materials research and inorganic synthesis involving bismuth compounds.
Chemical and Physical Properties
Density: Approx. 2.6 g/cm³ (estimated)
Melting Point: Decomposes on heating
Boiling Point: Not applicable (decomposes)
Solubility in Water: Slightly soluble; hydrolyzes forming insoluble oxy salts
Solubility in Other Solvents: Insoluble in alcohol and organic solvents; soluble in dilute mineral acids
Odor: Odorless
Applications
Inorganic Synthesis: Used as a precursor to other bismuth compounds.
Material Science: Investigated for its applications in dielectric and optoelectronic materials.
Analytical Chemistry: Occasionally employed in qualitative analysis involving sulfate or bismuth reactions.
Safety
Signal Word: Warning
H315 (11.1%): Causes skin irritation [Warning Skin corrosion/irritation]
H317 (11.1%): May cause an allergic skin reaction [Warning Sensitization, Skin]
H319 (22.2%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
H335 (11.1%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]
P261, P264, P264+P265, P271, P272, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P333+P317, P337+P317, P362+P364, P403+P233, P405, and P501
Handling and Storage
Storage Conditions: Store in a tightly closed container in a cool, dry, and well-ventilated location. Protect from humidity and incompatible substances such as strong acids and reducing agents.
Handling Precautions: Avoid dust generation and exposure to moisture. Use personal protective equipment and operate under good industrial hygiene practices.
