Description
  • Chemical Name
    Potassium Nitrate
  • CAS Number
    7757-79-1
  • Molecular Formula
    KNO₃
  • Grade
    ACS Reagent
  • Package Size
    2.5 kg

Description

What is Lab Pro Potassium Nitrate ACS (PN9556-25)?

Lab Pro Potassium Nitrate ACS is a white solid inorganic compound supplied as an ACS reagent grade material. Potassium nitrate has a wide range of applications across chemical, industrial, and analytical fields.

Potassium nitrate:

  • Is used in pyrotechnics, glass manufacture, and steel tempering
  • Is used as a reagent in laboratory applications
  • Is used as an electrolyte in salt bridges
  • Is used as a thermal storage medium in power generation systems
  • Forms phase change materials with silica and alumina nanoparticles
  • Forms an efficient nitrating reagent when combined with boron trifluoride
  • Provides an environmentally benign aromatic nitrating agent when adsorbed on alumina

Key Features

  • Potassium nitrate, ACS reagent grade
  • White solid form
  • ≥99.0% assay (KNO₃)
  • Controlled impurity levels
  • Suitable for laboratory and industrial applications

Common Applications

  • Pyrotechnics and fireworks
  • Glass manufacturing
  • Steel tempering
  • Fertilizers and food preservatives
  • Rocket propellants
  • Laboratory reagent use
  • Salt bridge electrolyte
  • Thermal energy storage systems
  • Aromatic nitration reactions

Packaging Details

  • Packaged In: 2.5 kg container
  • Includes: Single unit

Legal & Safety Notice

Some documentation and labeling may reference the legacy Alfa Aesar brand. Proper handling and use in accordance with applicable laboratory and industrial safety procedures is the responsibility of the end user.

Standards and Certifications

  • Lab Pro CofA
  • Lab Pro SDS
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Properties

Chemical Name Potassium Nitrate
IUPAC Name Potassium Nitrate
CAS Number 7757-79-1
Molecular Formula KNO₃
Molecular Weight 101.10 g/mol
Appearance White
Form Solid
Assay ≥99.0% (KNO₃)
pH 4.5–8.5 (5% solution at 25 °C)


Articles

FAQs

What is potassium nitrate ACS reagent grade used for?

Potassium nitrate ACS reagent grade is used in laboratory, industrial, and analytical applications that require high chemical purity. Common uses include chemical synthesis, analytical testing, salt bridge electrolytes, glass manufacturing, pyrotechnics, fertilizers, and thermal energy storage systems where consistent composition is critical.

What does ACS reagent grade and ≥99.0% assay mean?

ACS reagent grade indicates the product meets purity standards set by the American Chemical Society. An assay of ≥99.0% confirms high potassium nitrate content with controlled impurities, making it suitable for analytical, research, and regulated laboratory applications requiring reliable chemical performance.

What form is this potassium nitrate supplied in?

This product is supplied as a white solid in a 2.5 kg container. The solid form allows flexibility in preparing solutions at custom concentrations and supports use in both small-scale laboratory work and larger industrial or technical processes.

What laboratory applications commonly use potassium nitrate?

In laboratories, potassium nitrate is used as a reagent in analytical chemistry, an electrolyte in salt bridges, and a component in controlled nitration reactions. Its stability and solubility make it useful for experiments requiring a consistent inorganic nitrate source.

How should potassium nitrate be handled and stored?

Potassium nitrate should be stored in a cool, dry area in a tightly sealed container to prevent moisture absorption. Handle using standard laboratory safety practices and avoid contact with incompatible materials. Refer to the Safety Data Sheet for proper handling, storage, and disposal guidance.