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Copper(II) sulfate CAS#7758-98-7

Copper(II) sulfate CAS#7758-98-7

Basic Information

Copper(II) sulfate CAS 7758-98-7 with high water solubility, stable performance, and versatile forms for industrial chemical applications.

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product description

Chemical Identity and Appearance: Copper(II) sulfate (CuSO₄, CAS 7758-98-7) is an inorganic copper salt. The anhydrous form is typically white to grayish-white, while copper(II) sulfate pentahydrate (CuSO₄·5H₂O, CAS 7758-99-8) forms blue crystals. The supplied form should be confirmed when ordering.


Water Solubility: Copper(II) sulfate dissolves in water to form a blue solution. Solubility varies with temperature, and solutions are generally acidic.


Heating and Moisture Response: The pentahydrate loses its water of crystallization in stages when heated. Anhydrous copper sulfate absorbs moisture and turns blue as it hydrates. At sufficiently high temperatures, copper sulfate decomposes, releasing sulfur oxides.


Industrial Applications: Copper(II) sulfate is used in electroplating, mineral flotation, chemical synthesis, and laboratory applications. Product purity and impurity limits should match the intended use.


Handling and Storage: Store tightly sealed in a cool, dry, well-ventilated area. Avoid ingestion, dust inhalation, and eye contact. Prevent release into waterways, as copper sulfate is highly toxic to aquatic life.


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Q1: Is Jingrui Yake a factory or a trading company?
A: Jingrui Yake is a professional chemical trading and export company specializing in international chemical product trade and export services. We are not limited to products from a single factory. By leveraging China’s chemical industry clusters and integrating resources from qualified suppliers, we provide centralized procurement solutions covering multiple product categories, origins, and batches. Our strength lies in professional international trade services, including documentation, logistics, and compliance, ensuring a smooth and reliable purchasing process from China.


Q2: How do you ensure transaction security when working with Jingrui Yake?
A: We strictly follow international trade rules, including Incoterms® 2020, and accept common payment methods such as Letters of Credit (L/C) and Telegraphic Transfer (T/T). For first-time customers, we support small trial orders and can specify quality terms, arbitration clauses, and applicable laws in the contract. Our risk-control procedures help customers manage common risks such as exchange-rate fluctuations, shipping delays, and document discrepancies.


Q3: Which markets do you mainly serve?
A: Our products are exported to Southeast Asia, the Middle East, Europe, the Americas, Africa, and other regions. Our customers include plastic manufacturers, chemical fiber companies, coating producers, chemical distributors, and end users. We have experience handling the import regulations, certification requirements, and customs procedures of different markets.

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