Tollens Reagent Manufacturer,Supplier and Exporter in India

Tollens Reagent (Product Code: SCL-993/239) is the ammoniacal silver reagent used to distinguish aldehydes from ketones by the silver mirror test in college, university and senior-school organic chemistry laboratories. Aldehydes and reducing sugars deposit a bright silver mirror while ketones leave it unchanged, making it a natural partner to a Fehling solution kit; it is listed in a 500 ml analytical reagent pack with its MSDS. It is supplied by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India.

Specifications

What Is Tollens Reagent Used For?

For the test, a few drops of the sample are added to the reagent in a scrupulously clean test tube, which is then warmed in a water bath rather than over a flame. A silver mirror, or at least a grey-black silver deposit, indicates an aldehyde or a reducing sugar such as glucose; acetone and other simple ketones give no change. Because the reagent is built on silver nitrate solution made alkaline and complexed with ammonia, it also complements Fehling solution: aromatic aldehydes such as benzaldehyde reduce Tollens reagent but not Fehling solution, helping students tell aromatic from aliphatic aldehydes.

Safety matters with this reagent. The mixed ammoniacal silver solution must be prepared or used immediately before the test and never kept, because on standing it can deposit dangerously explosive silver compounds. Discard the contents of each tube straight after observation, acidifying with dilute acid before rinsing away as the MSDS and local rules direct. Silver salts stain skin black, so wear gloves and goggles, and keep the reagent away from light.

Supplier

Tollens Reagent is supplied by Jain Scientific Equipments Private Limited, which trades as ScienceLab from Ambala, Haryana, India, to colleges, universities, schools and distributors in India and international markets. For vendor registration, purchase departments can record the supplying company's GSTIN 06AAECJ8618A1ZT and its Legal Entity Identifier 3358004HRD1JIVXKYX49. Our company profile has further details.

Related Chemistry Lab Products

Test compounds and apparatus for a complete aldehyde and ketone practical:

• Benzaldehyde — an aromatic aldehyde that gives a clear positive mirror
• Acetone — a ketone that serves as the negative control
• D-Glucose Powder Anhydrous — a reducing sugar for the carbohydrate version of the test
• Fehling A Solution — for the complementary Fehling test on aliphatic aldehydes
• Water Bath — provides the gentle warming the mirror test needs

Find more organic test reagents in the Chemistry Lab range.

Frequently Asked Questions

Is Tollens Reagent supplied ready-mixed or in separate parts?
The current listing for Tollens Reagent does not specify the supplied form of the 500 ml pack. Please contact us to confirm whether it comes ready to use or as components before ordering, so your practical can be planned accordingly.

Can prepared Tollens Reagent be stored for later?
No. Once the ammoniacal silver solution of Tollens reagent is made up, use it in the same session and dispose of any leftover straight away, because mixtures left standing can form dangerously explosive silver deposits.

Why did Tollens Reagent give a black precipitate instead of a mirror?
A greasy test tube or overheating usually causes it. Clean the tube thoroughly, rinse with distilled water and warm it gently in a water bath; a grey-black silver deposit from Tollens reagent still counts as a positive result.

How is the silver mirror from Tollens Reagent removed from glassware?
Rinse the tube promptly with dilute nitric acid in a fume cupboard, then wash it with water. Silver residues from Tollens reagent should never be left standing in tubes, and the washings should be disposed of as the MSDS directs.

What is the shelf life of Tollens Reagent?
Shelf life depends on the chemical, its grade and storage conditions, so no blanket period is stated for Tollens Reagent. Ask us for the expiry date of the batch you are quoted; any mixed working solution must be used immediately and never stored.

Who supplies Tollens Reagent?
Tollens Reagent is supplied by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, Haryana, India, in a 500 ml analytical reagent pack with an MSDS, for organic chemistry and biochemistry practicals in India and international markets.

What registration details are available for Tollens Reagent tenders?
The GSTIN and LEI shown in the Supplier section can be quoted in vendor forms when buying Tollens Reagent. For any other paperwork your tender needs, share the requirements through the contact form and we will confirm what can be provided.

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For a price on Tollens Reagent, contact our team or add it to your enquiry cart together with your aldehyde test samples.

Last updated: 24 September 2026