2,4-DNP Manufacturer,Supplier and Exporter in India
Product Code : EL-CL-12223
Jlab Export is a leading 2,4-DNP Manufacturer,and suppliers in India
2,4-DNP (code EL-CL-12223) is 2,4-dinitrophenylhydrazine, the reagent that picks out aldehydes and ketones: with either kind of carbonyl compound it gives a yellow, orange or red precipitate of a 2,4-dinitrophenylhydrazone. It is the usual first test for a carbonyl group in organic qualitative analysis. JLab manufactures this reagent in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Model No. | JL742/116 |
| Chemical | 2,4-Dinitrophenylhydrazine |
| Pack size | 100 g |
| Grade | Analytical reagent |
| Documentation | MSDS included |
| Quality check | Each pack is visually inspected before dispatch |
| Pack quantity | Each (sold individually) |
| Minimum order quantity | 10 units |
| Dispatch time | Usually 3–5 working days |
| Product code | EL-CL-12223 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
Running the Carbonyl Test
Dissolved in methanol with a little sulphuric acid, the solid becomes Brady’s reagent. Add a few drops of the compound, or of its solution in alcohol, to the reagent in a test tube; a yellow to orange-red precipitate means an aldehyde or a ketone is present. The carbonyl group condenses with the hydrazine’s NH2 group and a molecule of water is lost. Aromatic carbonyl compounds usually give the deeper orange-red colours.
Telling Aldehydes from Ketones
The precipitate shows a carbonyl group but not which kind. Aldehydes then reduce Tollens’ reagent to a silver mirror and turn Schiff’s reagent pink-magenta, while most ketones do neither. Carboxylic acids and esters give no precipitate.
Related Reagents
- Tollens Reagent — silver mirror reagent that tells aldehydes from ketones.
- Schiffs Reagent — reagent that turns pink-magenta with aldehydes.
- Benzaldehyde — analytical reagent aldehyde to run as a positive sample.
More organic test reagents are in Chemistry Lab.
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Last updated: 29 October 2026
