- Physics Lab Equipment
- Chemistry Lab Equipment
- Biology Lab Equipment
- Anatomical Lab Equipment
- Learning
- Educational Lab Equipment
- Magnets
- Agriculture
- Astronomy
- Earth Science
- Geography Lab Equipment
- Safety Lab Coat
- Laboratory
- Meteorological
- Electricity & Magnetism
- Heat
- School Lab Equipment
- Lab Glassware
- Science Lab Equipment
- Tvet Lab Equipment
- Robotics Kits Supplier and Manufacturer for Schools India
- Math Lab Equipment Manufacturers and Exporters in Ambala
- STEM Kits Manufacturers and Supplier India
- Engineering Lab Equipment
- Hospital Lab Equipment
- Water, Sanitation & Hygiene Supplies
- Cold Chain, Solar & Communication Equipment
- Nutrition
Sodium Nitrite
Sodium Nitrite (Product Code: SCI-657/287) is an analytical reagent grade inorganic salt used to generate nitrous acid for diazotisation reactions and azo dye tests in college and senior-school organic chemistry laboratories. Lecturers and research students use this 100 g pack, supplied with an MSDS, to convert aromatic amines such as aniline into diazonium salts and to prepare small amounts of nitrogen gas. It is supplied by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India, a laboratory chemicals supplier in India serving institutions.
Specifications
| Parameter | Detail |
|---|---|
| Chemical | Sodium nitrite, NaNO2 |
| Grade | Analytical reagent |
| Capacity | 100 g |
| Safety data | MSDS provided |
| Shelf life | Shelf life depends on the chemical, its grade and storage conditions; ask us for the expiry date of the batch you are quoted. |
| Product code | SCI-657/287 |
| Supplied by | Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India |
What Is Sodium Nitrite Used For?
In the azo dye test for primary aromatic amines, the amine is dissolved in dilute hydrochloric acid and chilled in ice, then cold sodium nitrite solution is added to form a diazonium salt. Pouring this into an alkaline solution of a coupling agent such as 2-naphthol gives a vivid orange-red dye that confirms the amine. The same diazotisation step underlies dye synthesis practicals and colour tests based on sulfanilic acid.
Gently warming a solution of sodium nitrite with ammonium chloride releases nitrogen gas, which can be collected over water to study an unreactive gas. Sodium nitrite is toxic if swallowed and a strong oxidiser, so never grind or heat it dry with ammonium salts. Store it apart from acids, which release toxic nitrogen oxides, and label it clearly so it is not confused with sodium nitrate or common salt.
Supplier
ScienceLab is the trade name of Jain Scientific Equipments Private Limited, which supplies Sodium Nitrite in 100 g analytical reagent packs, each with its MSDS, to universities, colleges, pharmacy institutes and laboratory dealers. For buyers completing supplier registration, the company's Importer-Exporter Code is AAECJ8618A (DGFT) and its GSTIN is 06AAECJ8618A1ZT. The ScienceLab profile has more about the company.
Related Laboratory Equipment
Reagents used with sodium nitrite in diazotisation and gas preparation work:
- Aniline — the aromatic amine most often diazotised in teaching labs.
- Sulfanilic Acid — another amine used in diazotisation colour tests.
- Hydrochloric Acid — forms nitrous acid with sodium nitrite in the cold.
- Ammonium Chloride — reacts with sodium nitrite solution to give nitrogen gas.
- Sodium Nitrate — the related nitrate salt, not to be confused with this nitrite.
Further chemicals and apparatus are in the Laboratory Equipment category.
Frequently Asked Questions
What is Sodium Nitrite used for in the chemistry lab?
Sodium Nitrite is used with cold dilute hydrochloric acid to make nitrous acid for diazotising aromatic amines, in the azo dye test and dye preparation practicals, and with ammonium chloride to generate nitrogen gas. This listing is a 100 g analytical reagent pack with MSDS.
Why must diazotisation with Sodium Nitrite be kept cold?
Diazotisation with Sodium Nitrite is carried out in an ice bath because diazonium salts decompose quickly when warm, releasing nitrogen and spoiling the dye test. Keeping both the amine solution and the nitrite solution cold gives a clearer colour result.
Is Sodium Nitrite hazardous?
Yes. Sodium Nitrite is toxic if swallowed, an oxidiser that can intensify fires, and it releases toxic nitrogen oxides with acids. Use it with gloves and eye protection, weigh it away from food and drink, and follow the MSDS that comes with the pack.
How is Sodium Nitrite different from sodium nitrate?
Sodium Nitrite contains the nitrite ion and acts as a source of nitrous acid, while sodium nitrate contains the nitrate ion and works mainly as an oxidiser. The two white salts look alike, so store them with clear labels to prevent mix-ups.
How should Sodium Nitrite be stored, and how long does it last?
Store Sodium Nitrite tightly closed in a cool, dry, locked cabinet away from acids, ammonium salts and combustibles. Shelf life depends on the chemical, its grade and storage conditions; ask us for the expiry date of the batch you are quoted.
Who supplies Sodium Nitrite SCI-657/287?
Sodium Nitrite SCI-657/287 is supplied by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India, to colleges, research laboratories, schools and dealers in India and international markets, in 100 g analytical reagent packs with MSDS.
Request a Quote
For a quotation on Sodium Nitrite, write to us via the contact page or use the enquiry cart, mentioning SCI-657/287, the number of 100 g packs and whether amines such as aniline should be quoted too.
Last updated: 24 September 2026
