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Potassium Nitrate

Potassium Nitrate

CAS Number: 7757-79-1

Molecular Formula: KNO3

Nitrogen-containSaltpeterSaltpetreCore macronutrient (N,K) fertilizer

About Potassium Nitrate

Potassium Nitrate (KNO₃) is a fully water-soluble inorganic salt delivering a chloride-free combination of potassium and nitrate nitrogen in a single compound. Known historically as saltpeter and industrially as niter, it is manufactured as a white crystalline powder or granule with ≥99% purity. It is one of the most b...

Synonyms

  • potassium nitrate
  • potassium nitrate monohydrate
  • saltpeter
  • saltpetre
  • POTASSIUM NITRATE
View all

Potassium Nitrate Specifications

CAS Number
7757-79-1
Molecular Formula
KNO3
Molecular Weight
101.103
IUPAC Name
potassium;nitrate
Canonical SMILES
[N+](=O)([O-])[O-].[K+]
InChI Key
FGIUAXJPYTZDNR-UHFFFAOYSA-N
InChI
1S/K.NO3/c;2-1(3)4/q+1;-1
EINECS Number
231-818-8
MDL Number
MFCD00011039
UNSPSC Code
12352102
HSN No
2834219000
Molecular Weight
101.103
Boiling point
400ºC
Melting point
334ºC
Physical State
Colourless crystals or white powder
Solubility
320 g/L (20 ºC)
PSA
68.880
LogP
0.28410
Density
2.109
GHS Code
GHS03, GHS07
P statements code
P210; P280; P304 + P340 + P312
H statements code
H272; H335

Agrochemicals & Controlled Release Nutrition

Extensively used in advanced fertigation systems, greenhouse cultivation, and high-efficiency crop programs, potassium nitrate enables precise nutrient dosing, supports rapid nitrogen uptake, and enhances fruit size, color uniformity, and shelf life in high-value crops.

Specialty Chemical Processing

Acts as a controlled oxidizing and nitrating agent in fine chemical synthesis, enabling consistent reaction kinetics and improved yield efficiency in formulation-driven manufacturing environments.

Water Treatment & Environmental Systems

Utilized in nitrate-based treatment processes for odor control, sulfide suppression, and biological wastewater management, where controlled nitrate release is critical.

Thermal Energy & Heat Transfer Systems

Used in molten salt formulations for heat storage and transfer in industrial thermal systems, offering stable high-temperature performance and energy efficiency.

Surface Treatment & Metal Processing

Applied in metal cleaning, pickling, and surface conditioning processes where oxidizing properties help improve treatment consistency and surface quality.

Detail 1

Stable

Detail 2

Strong oxidizer - contact with combustible material may cause fire

Detail 3

Incompatible with combustible materials, strong reducing agents

Detail 4

Store at RT

  1. potassium nitrate
  2. potassium nitrate monohydrate
  3. saltpeter
  4. saltpetre
  5. POTASSIUM NITRATE

Minimum Order Quantity

25 kg (pilot) · 1 MT (commercial)

Lead Time

3 – 5 weeks ex-works

Incoterms

FOB · CIF

Packaging

20 L pails, 200 L HDPE drums, 1000 L IBC

Regional Availability

India · EU · Middle East · Southeast Asia

Documentation

SDS · COA · TDS available on request

Compliance & Quality

REACH registered*

GHS/SDS available

ISO 9001:2015 site*

RoHS compliant*

Global sourcing network

Consistent quality & reliability

End-to-end technical support

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