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Potassium nitrate

Potassium nitrate

Potassium nitrate

Potassium nitrate, available grades: ≥99.0% (Analytical Reagent, Guaranteed Reagent), High-Purity ≥99.99%, CRM ≥99%, Industrial, analytical standard (custom concentration). A Class 5.1 oxidizing substance (UN 1486, PG III); burn/explosion risk with combustibles, organics, reducing agents, sulfur/phosphorus and metal powders (black-powder component); serious eye irritation (H319). Used as black-powder/pyrotechnic oxidizer, in matches and igniters, molten-salt baths, glass and ceramics, NPK fertilisers, food curing and as a reference material.

OEM supported. Custom purity & specifications available, please contact our manager.

Hazard Class:Class 5.1 (Oxidizing substance)
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Specifications

CAS Number7757-79-1Molecular FormulaKNO3
Molecular Weight101.1AppearanceColourless transparent orthorhombic or trigonal crystals or white powder, readily soluble in water and slightly soluble in ethanol; hygroscopic, a strong oxidizer
HS Code2834.21UN Number1486
Density2.109 (USCG, 1999) - Denser than water; will sinkBoiling Point752 °F at 760 mmHg (decomposes) (USCG, 1999)
Melting Point633.2 °F (USCG, 1999)Flash PointN/A
OriginChinaVapor PressureN/A
Solubility35g/100mlStorage ConditionCool, dry, well-ventilated place, away from combustibles, reducing agents and acids
Packaging500 g / 25 kg / 200 kg / 1 tShelf Life6-24 months
GradeAnalytical Reagent (AR) / Guaranteed Reagent (GR) / Industrial Grade / High-Purity Reagent / Certified Reference Material ≥99% / Analytical Standard (custom concentration)EINECS231-818-8
MDLN/AChina Customs Code2834219000
GHS ClassificationDanger: H272; H319Hazard ClassClass 5.1 (Oxidizing substance)
CategoryExplosive PrecursorsUpdated2026-09-12

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Inquiry & Procurement

To purchase this product, please provide the CAS number, purity requirement and quantity; our sales team will reply with pricing and lead time within 24 hours on business days.

Frequently asked questions about Potassium nitrate

What is Potassium nitrate? What is its CAS number?

Potassium nitrate is an industrial chemical raw material. Its CAS number is 7757-79-1. Its molecular formula is KNO3, with a molecular weight of 101.1. Typical appearance: Colourless transparent orthorhombic or trigonal crystals or white powder, readily soluble in water and slightly soluble in ethanol; hygroscopic, a strong oxidizer.

What are the synonyms and registry numbers of Potassium nitrate?

Potassium nitrate (CAS 7757-79-1) is listed under the following identifiers. EINECS number: 231-818-8.

What documents are provided with Potassium nitrate (CAS 7757-79-1)?

A Certificate of Analysis (COA) is issued for each batch of Potassium nitrate. Standard purity grade: Analytical Grade. Safety Data Sheet (MSDS/SDS) and technical data sheet are available on request before ordering.

Is Potassium nitrate classified as dangerous goods? Which UN number applies?

Transport of Potassium nitrate (CAS 7757-79-1) is arranged according to its hazardous classification. UN number: 1486. GHS hazard statements: H272, H319. We ship under IMDG (sea), IATA (air) or ADR (road) rules with compliant UN packaging; the final classification is confirmed against the batch test report.

What are the typical physical and chemical properties of Potassium nitrate?

Typical properties of Potassium nitrate (CAS 7757-79-1): appearance Colourless transparent orthorhombic or trigonal crystals or white powder, readily soluble in water and slightly soluble in ethanol; hygroscopic, a strong oxidizer; density 2.109 (USCG, 1999) - Denser than water; will sink; melting point 633.2 °F (USCG, 1999); boiling point 752 °F at 760 mmHg (decomposes) (USCG, 1999); solubility 35g/100ml. These are reference values, not a batch specification.

What is the HS code for Potassium nitrate?

The HS code for Potassium nitrate (CAS 7757-79-1) is 2834.21. Customs classification may differ by destination country, so please confirm the final code with us before ordering.
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