Tollens Reagent – 500ml Packs

Tollens Reagent is an ammoniacal silver(I) test reagent that can oxidise suitable aldehydes with concurrent deposition of metallic silver in the classical silver-mirror reaction. Its usefulness depends on choosing the correct chemical identity, concentration and laboratory method. The supplied product name specifies the 500ml Packs package, while its formulation or chemical composition should be confirmed where this is not explicit. For educational institutions and research centres, accurate reagent selection is essential to obtaining interpretable results. Use appropriate controls, compatible apparatus and documented procedures when performing analytical or microscopy tests. Lab users should consider hazards, solution stability, solvent composition and waste management before use. In mixtures, a molecular formula and molecular weight for the complete product are generally not meaningful; constituent information is provided instead. This named packaged reagent is not suitable for routine premixed storage; the vendor must confirm whether the pack instead contains separate, stable precursor components. Do not treat an aged premixed bottle as safe.

Product Specifications

Specification	Details
Appearance	Colourless transparent liquid when freshly prepared
Assay	99%
Chemical Name	Tollens’ reagent
Alternate Names	Ammoniacal silver nitrate reagent; silver mirror test reagent
Molecular Formula	Not applicable; ammoniacal silver solution mixture
Empirical Formula	Not applicable; mixture
CAS Number	Not applicable to mixture; silver nitrate CAS 7761-88-8
Molecular Weight	Not applicable to formulated mixture
Grade	LR Laboratory Reagent

Key Features of Tollens Reagent

• Contains reactive silver–ammine species under alkaline conditions
• Distinguishes many aldehydes from ordinary ketones in controlled tests
• Produces a visible silver mirror or grey silver deposit
• Unstable on standing and must be prepared freshly for use
• Dried deposits can form shock-sensitive explosive silver compounds

Laboratory Applications of Tollens Reagent

• Freshly prepared silver-mirror demonstration under specialist supervision
• Qualitative examination of aldehyde functional groups
• Comparative aldehyde and ketone teaching tests
• Oxidation–reduction stoichiometry demonstrations
• Controlled studies of silver-ion reduction on clean glass

Why Choose Lab Wale to Buy Tollens Reagent

Lab Wale lists Tollens Reagent for laboratories, colleges, universities and research facilities seeking scientific chemicals and supplies. Before ordering, purchasers should compare the labelled composition, pack size and intended method with their experimental requirements. Product identity and the available specifications help distinguish similar reagents, while applicable safety documentation informs storage and handling choices. Laboratory Reagent grade is not a guarantee of suitability for every analytical application; validate method compatibility before use.

Frequently Asked Questions About Tollens Reagent

What is Tollens Reagent used for?

Freshly prepared silver-mirror demonstration under specialist supervision is an example of a relevant laboratory use. Other applications include qualitative examination of aldehyde functional groups. Procedures must be chosen for the actual chemical composition, specified concentration and safety restrictions; different formulations are not automatically interchangeable.

Can Tollens’ reagent be stored as a ready-to-use bottle?

No. Established laboratory guidance warns not to prepare Tollens’ reagent in advance or store it because explosive silver-containing residues can form. The offered packaged product identity and safety arrangements must be verified before any use. Consult the analytical method and use positive and negative controls if applicable.

What are the chemical formula and CAS number of Tollens Reagent?

The available formula information is Not applicable; ammoniacal silver solution mixture; the corresponding CAS information is Not applicable to mixture; silver nitrate CAS 7761-88-8. If this product is a mixed solution, the number refers to an ingredient rather than to the formulated mixture as a whole. Confirm product-specific composition before purchasing.

Can Tollens Reagent be used in educational or research laboratories?

Its use depends on the institution’s procedures, staff training, and documented formulation. Some listed applications require trained personnel or specialist controls. Laboratory grade alone does not guarantee that a reagent is appropriate for a particular microscopy, qualitative or quantitative method.

What storage and handling precautions apply to Tollens Reagent?

Do not store prepared Tollens’ reagent or allow it to stand or dry. This listing describes a packaged product whose safety and actual contents require urgent supplier confirmation. Prepare only the method-required fresh quantity from separately stored constituents under an approved institutional procedure. WARNING: Tollens’ reagent may form explosive silver compounds on standing or drying. Do not open or use an old or unidentified premixed Refer to the current product Safety Data Sheet for the full requirements.

Storage Conditions for Tollens Reagent

Do not store prepared Tollens’ reagent or allow it to stand or dry. This listing describes a packaged product whose safety and actual contents require urgent supplier confirmation. Prepare only the method-required fresh quantity from separately stored constituents under an approved institutional procedure. Confirm supplier-specific conditions, container compatibility and shelf-life before use.

Precautions for Handling Tollens Reagent

Review the current Safety Data Sheet before handling. WARNING: Tollens’ reagent may form explosive silver compounds on standing or drying. Do not open or use an old or unidentified premixed bottle; seek an institutional chemical-safety officer’s assessment. Fresh mixtures require suitable PPE, trained supervision and prompt disposal under approved silver-waste procedures. Use laboratory PPE, trained supervision where needed, and the institution’s incident and waste-disposal procedures.