Copper Sulphate Blue Crystal Pentahydrate – 500 gram Packs

Copper Sulphate Blue Crystal Pentahydrate, also known as Copper(II) Sulphate Pentahydrate or Cupric Sulphate Pentahydrate, is an inorganic crystalline salt with the chemical formula CuSO₄·5H₂O. It contains copper(II) ions, sulphate ions, and five water molecules of crystallization, giving it its characteristic bright blue colour. This compound dissolves readily in water to form blue aqueous solutions and is widely used in inorganic chemistry experiments, solution preparation, crystallization studies, and investigations of ionic reactions. Its hydration behaviour makes it particularly useful for demonstrating the effects of heating and water loss in laboratory practicals. Copper Sulphate Pentahydrate is relevant to school and college chemistry laboratories, university teaching facilities, analytical laboratories, and selected research applications. This 500 gram pack is intended for laboratory use, subject to the required reagent grade, experimental specifications, and appropriate chemical safety procedures.

Product Specifications

Specification	Details
Appearance	Blue crystalline powder
Assay	99%
Chemical Name	Copper(II) Sulphate Pentahydrate
Alternate Names	Cupric Sulphate Pentahydrate, Blue Vitriol, Bluestone, Copper Sulphate Pentahydrate
Molecular Formula	CuSO₄·5H₂O
Empirical Formula	CuH₁₀O₉S
CAS Number	7758-99-8
Molecular Weight	249.68 g/mol
Grade	LR Laboratory Reagent

Key Features of Copper Sulphate Blue Crystal Pentahydrate

• Defined chemical composition: Contains copper(II) sulphate with five water molecules of crystallization, represented by CuSO₄·5H₂O.
• Characteristic blue crystals: Its distinctive blue crystalline appearance makes it useful for observing physical changes associated with hydration and dehydration.
• Good water solubility: Dissolves readily in water to form blue solutions containing copper(II) and sulphate ions.
• Useful ionic chemistry: Participates in selected precipitation, displacement, and redox reactions, depending on the reactants and experimental conditions.
• Educational and research relevance: Supports appropriate inorganic chemistry practicals, analytical investigations, and selected studies involving copper-containing compounds.

Laboratory Applications of Copper Sulphate Blue Crystal Pentahydrate

• School and college chemistry practicals: Used in supervised experiments demonstrating crystallization, hydration, ionic reactions, and the properties of inorganic salts.
• Laboratory solution preparation: Used to prepare aqueous copper(II) sulphate solutions, with concentration calculations based on the pentahydrate formula mass.
• Qualitative inorganic analysis: Supports selected investigations involving copper(II) ions, sulphate ions, and precipitation reactions under appropriate analytical conditions.
• Redox and displacement experiments: Used in controlled demonstrations of metal displacement reactions, including reactions between copper(II) sulphate solutions and suitable reactive metals.
• Research and inorganic synthesis: Serves as a starting material for selected preparations of copper-containing compounds and research into copper chemistry where the hydrated form is suitable.

Why Choose Lab Wale to Buy Copper Sulphate Blue Crystal Pentahydrate

Lab Wale provides a convenient sourcing option for laboratory chemicals and scientific supplies used by schools, colleges, universities, research centres, and laboratory professionals. When purchasing Copper Sulphate Pentahydrate, check the chemical identity, hydrate form, stated grade, pack size, and available technical and safety information. The 500 gram pack provides a defined quantity for institutional laboratory requirements. Selecting the correct reagent form helps ensure that its composition and formula mass match the requirements of the intended experiment.

Frequently Asked Questions About Copper Sulphate Blue Crystal Pentahydrate

What is Copper Sulphate Blue Crystal Pentahydrate used for in laboratories?

Copper Sulphate Pentahydrate is used in inorganic chemistry practicals, aqueous solution preparation, crystallization experiments, qualitative analysis, and selected redox investigations. It is particularly useful for demonstrating the properties of copper(II) salts and reactions involving copper ions. Its suitability depends on the required reagent grade and experimental method.

What is the chemical formula of Copper Sulphate Pentahydrate?

The molecular formula is CuSO₄·5H₂O, and its molecular weight is approximately 249.68 g/mol. Each formula unit contains one copper atom, one sulphur atom, four sulphate oxygen atoms, and five water molecules. Its empirical formula, expressed as the simplest whole-number atom ratio, is CuH₁₀O₉S.

What is the CAS number of Copper Sulphate Pentahydrate?

The CAS Registry Number for Copper(II) Sulphate Pentahydrate is 7758-99-8. Anhydrous Copper(II) Sulphate has the different CAS number 7758-98-7. Checking the CAS number helps distinguish the hydrated and anhydrous forms when selecting reagents for laboratory calculations and experimental procedures.

Why are Copper Sulphate Pentahydrate crystals blue?

The characteristic blue colour arises from the electronic properties of hydrated copper(II) ions in the crystalline structure. The compound contains five water molecules of crystallization per formula unit. When heated under suitable conditions, it loses water and changes towards anhydrous copper sulphate, which is white to off-white. This transformation is useful for supervised hydration experiments.

How should Copper Sulphate Pentahydrate be stored and handled safely?

Store the crystals in a tightly closed, compatible container in a cool, dry location. Avoid generating dust and prevent contact with the eyes and skin. Wear suitable gloves and protective eyewear, and consult the applicable Safety Data Sheet before use. Prevent environmental release because copper sulphate is hazardous to aquatic organisms.

Storage Conditions for Copper Sulphate Blue Crystal Pentahydrate

Store Copper Sulphate Pentahydrate in a tightly closed, compatible container in a cool, dry, well-ventilated area, away from incompatible chemicals. Protect the crystals from contamination and excessive heat, which can cause loss of water of crystallization. Keep the container clearly labelled and follow the applicable Safety Data Sheet and institutional chemical-storage procedures.

Precautions for Handling Copper Sulphate Blue Crystal Pentahydrate

Review the current Safety Data Sheet before use and wear suitable chemical-resistant gloves, safety goggles, and laboratory clothing. Avoid inhaling dust and prevent contact with the eyes and skin. Do not ingest the chemical or release it into drains, soil, or waterways because it is hazardous to aquatic organisms. Use appropriate ventilation when handling dusty material, manage spills using approved procedures, and dispose of residues through an authorized chemical-waste route. Ensure suitable supervision during educational laboratory activities.