Potassium Nitrate

Synonym(s)

: Nitre, Nitric acid potassium salt

Mol. Formula

: HNO3.K

EC / List no.

: 231-818-8

CAS no.

: 7757-79-1

Molecular weight

: 101,103

Potassium nitrate is the inorganic nitrate salt of potassium. It appears as a white to off-white crystalline solid. It is soluble in water. It does not burn, but accelerates the combustion of combustible materials.

Application

» This substance is used in the following products: Fertilizers, cosmetics and personal care products, antifreeze products and washing and cleaning products.
» Used in machine wash fluids/detergents, automotive care products, paints, coatings or adhesives, fragrances and air fresheners, coolants in refrigerators, oil-based electric heaters, hydraulic fluids in automotive suspension, lubricants in engine oil and brake fluids.

Product Specifications

Physical and Chemical Properties
» Potassium nitrate appears as a white to off-white crystalline solid.
» It is odorless and has a salty sharp taste.

Properties

Characteristics	Unit	Value	Condition
Melting point	°C	335
Boiling point	°C	400	Decomposes
Density	g/cm³	2.1	20 °C
Solubility	g/ L	100	25 °C, soluble with water
pH		4.5- 8.5	5% solution
refractive index		1.335