Beta Naphthol Manufacturer,Supplier and Exporter in India
Product Code : EL-CL-12318
Jlab Export is a leading Beta Naphthol Manufacturer,and suppliers in India
Beta Naphthol (code EL-CL-12318) is 2-naphthol, the naphthalene phenol used to confirm a primary aromatic amine: dissolved in sodium hydroxide, it couples with a diazonium salt to give an orange-red azo dye. It is the 2-isomer of alpha-naphthol. The naphthol is manufactured and bottled by JLab in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Model No. | JL901/0193 |
| Pack size | 500 g |
| Grade | Analytical reagent |
| Documentation | MSDS included |
| Quality check | Each bottle 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-12318 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
The Azo Dye Test for Aniline
Aniline treated with sodium nitrite and dilute hydrochloric acid in an ice bath forms benzenediazonium chloride. Poured into alkaline beta-naphthol, the diazonium ion attacks the ring next to the hydroxyl group and an orange-red dye separates at once. Primary aliphatic amines give no dye, because their diazonium salts break down with loss of nitrogen gas.
Related Reagents for the Dye Test
- Aniline — the aromatic amine usually diazotised for this test.
- Sodium Nitrite — source of nitrous acid for making the diazonium salt.
- Sodium Hydroxide — dissolves beta-naphthol as the reactive naphthoxide ion.
- Alpha Naphthol — the 1-isomer, used for the Molisch carbohydrate test.
Organic test reagents of this kind sit in Chemistry Lab.
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Last updated: 29 October 2026