Potassium Nitrate Extra Pure

Brand/Manufacturer : Research Lab

CAS.No: 7757-79-1

SKU: RE01254^0.5Kg

Sold By: Research Lab Fine Chem Industries

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In glass manufacturing, Extra Pure grade Potassium Nitrate is indispensable � commercial or technical grades introduce lithium and chloride impurities that cause staining and prevent the ion-exchange strengthening of toughened glass for optical lenses, lab glassware, and smartphone screens. Only highly purified reagent-grade KNO? provides the clean molten salt bath that allows K? ions to replace Na? ions in the glass matrix, producing compressive surface stress and superior mechanical strength.
In heat treatment and metallurgy, molten potassium nitrate salt baths (alone or blended with sodium nitrate) provide highly uniform heat distribution at 150�550�C for metal annealing, hardening, tempering, and passivation � extending component life and surface quality in aerospace, automotive, and tooling applications.

Buy Best quality Potassium Nitrate Extra Pure online at the best price in India from iBuyChemikals. This high-purity chemical compound is widely used in laboratory research, analytical testing, chemical processing, educational experiments, and industrial applications requiring reliable quality and consistent performance.

Potassium Nitrate Extra Pure is a white crystalline compound known for its excellent stability, high purity, and dependable performance in scientific and industrial environments. It is commonly utilized in research laboratories, educational institutions, quality control laboratories, and specialty chemical manufacturing processes where consistent results are essential.

At iBuyChemikals, you can buy Potassium Nitrate Extra Pure online in convenient pack sizes and bulk quantities with competitive pricing and reliable nationwide delivery. Whether you are a laboratory professional, research organization, educational institution, or industrial manufacturer, this extra pure grade chemical offers the quality and consistency required for demanding applications.

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#	Attribute	Value
1.	Synonyms.	Niter, Saltpetre, Potassium Saltpeter
2.	Appearance.	White Crystalline Powder or Granules
3.	Chemical Formula.	KNO₃
4.	Molecular Weight.	101.10 g/mol
5.	Density.	2.11 g/cm³
6.	Melting Point.	334°C
7.	Storage.	Store in a cool, dry, well-ventilated area away from moisture and incompatible materials
8.	Physical State	Solid
9.	Flash Point	N/A
10.	Assay	99.00%
11.	Appearance	White Crystalline Powder or Granules
12.	Molecular Weight	101.10 g/mol
13.	Density	2.11 g/cm�
14.	Melting Point	334�C
15.	Storage	Store in a cool, dry, well-ventilated area away from moisture and incompatible materials
16.	brand	Research Lab

1. What is Potassium Nitrate Extra Pure grade?

Extra Pure is a high-purity specification above standard LR (Lab Reagent) grade, with a minimum assay of ≥99.5% and tightly controlled limits on chloride (≤0.005%), iron (≤1 ppm), and heavy metals (≤2 ppm). It is chosen when trace impurities would interfere with the application — particularly glass ion-exchange strengthening, precision synthesis, and analytical work.

2. Is Potassium Nitrate the same as Saltpetre?

Yes — saltpetre (also spelled saltpeter), nitre, niter, and Kalmi Shora are all common names for Potassium Nitrate (KNO?, CAS 7757-79-1). The term "extra pure" or "reagent grade" refers to the purity level of the same compound; the chemistry is identical.

3. What is Potassium Nitrate used for in laboratories?

In laboratories, KNO? Extra Pure is used as a reagent for preparing standard buffer solutions, calibrating flame emission spectrometry instruments, conducting soil analysis, oxidation and nitration reactions in organic synthesis, and as an electrolyte bridge in electrochemical cells. Its controlled purity ensures reproducible results.

4. Why is Extra Pure Potassium Nitrate required for glass manufacturing?

Standard commercial or technical-grade KNO? contains lithium and chloride impurities that cause staining and prevent effective ion-exchange strengthening of glass. Only highly purified grades (Extra Pure or better) provide the clean molten salt bath needed to exchange K? for Na? ions in the glass structure, creating surface compressive stress that strengthens optical lenses, lab glassware, and smartphone screens.

5. Can Potassium Nitrate be used as a fertilizer?

Yes. Potassium Nitrate is one of the most efficient fertilizers available — it provides both nitrogen (13.8%) and potassium (46.2% as K?O) in fully water-soluble, chloride-free form. It is widely used in fertigation systems, foliar sprays, and hydroponics for high-value crops. For field-scale agricultural use, industrial or agricultural grade is more cost-effective; Extra Pure is typically used in research or controlled-environment horticulture requiring traceable purity.