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Potassium perchlorate

Potassium perchlorate
Potassium perchlorate structure
Chemical Name:
Potassium perchlorate
KClO4;Irenal;Irenat;ON-1489;Astrumal;Periodin;Peroidin;Perchloracap;Kaliumperchlorat;Potassium perchlorat
Molecular Formula:
Formula Weight:
MOL File:

Potassium perchlorate Properties

Melting point:
400 °C (dec.)(lit.)
storage temp. 
Store at +5°C to +30°C.
H2O: 0.1 M at 20 °C, clear, colorless
Specific Gravity
Clear colorless to slightly yellow
5.0 (10g/l, H2O, 25℃)
Water Solubility 
17 g/L (20 ºC)
Solubility Product Constant (Ksp)
pKsp: 1.98
Stable. Strong oxidiser - contact with combustible materials may lead to fire or explosion. Incompatible with reducing agents, organic materials. Forms explosive mixtures with alcohols.
CAS DataBase Reference
7778-74-7(CAS DataBase Reference)
NIST Chemistry Reference
Potassium perchlorate(7778-74-7)
EPA Substance Registry System
Perchloric acid, potassium salt(7778-74-7)
  • Risk and Safety Statements
Signal word  Danger
Hazard statements  H271-H302
Precautionary statements  P220-P210a-P221-P283-P306+P360-P371+P380+P375-P501a
Hazard Codes  O,Xn
Risk Statements  9-22
Safety Statements  13-22-27
RIDADR  UN 1489 5.1/PG 2
WGK Germany  1
RTECS  SC9700000
HS Code  2829 90 10
HazardClass  5.1
PackingGroup  II

NFPA 704

Diamond Hazard Value Description
1 2
Health   1 Exposure would cause irritation with only minor residual injury (e.g. acetone, sodium bromate, potassium chloride)
Flammability   0 Materials that will not burn under typical fire conditions, including intrinsically noncombustible materials such as concrete, stone, and sand. Materials that will not burn in air when exposed to a temperature of 820 °C (1,500 °F) for a period of 5 minutes.(e.g. Carbon tetrachloride)
Instability   2 Undergoes violent chemical change at elevated temperatures and pressures, reacts violently with water, or may form explosive mixtures with water (e.g. white phosphorus, potassium, sodium)

(NFPA, 2010)

Potassium perchlorate price More Price(12)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 241830 Potassium perchlorate ACS reagent, ≥99% 7778-74-7 100g $47.5 2018-11-13 Buy
Sigma-Aldrich 241830 Potassium perchlorate ACS reagent, ≥99% 7778-74-7 500g $148 2018-11-13 Buy
Alfa Aesar 011630 Potassium perchlorate, anhydrous, ACS, 99.0-100.5% 7778-74-7 100g $32.5 2018-11-16 Buy
Alfa Aesar 011630 Potassium perchlorate, anhydrous, ACS, 99.0-100.5% 7778-74-7 500g $100 2018-11-16 Buy
Strem Chemicals 93-1935 Potassium perchlorate, 99% 7778-74-7 100g $22 2018-11-13 Buy

Potassium perchlorate Chemical Properties,Uses,Production

Chemical Properties

colourless crystals or white powder


In explosives, pyrotechnics and photography, in analytical chemistry.


The perchlorate ion of potassium perchlorate, KClO4, is a competitive inhibitor of thyroidal I- transport via the Sodium Iodide Symporter (NIS).This drug can cause fatal aplastic anemia and gastric ulcers and is now rarely used. If administered with careful supervision, in limited low doses and for only brief periods, serious toxic effects can be avoided. The compound is especially effective in treating iodine-induced hyperthyroidism, which may occur, for example, in patients treated with the antiarrhythmic compound amiodarone. Perchlorate ion can also be used in a diagnostic test of I- incorporation into Tg, the so-called perchlorate discharge test.

General Description

A white crystalline solid. Forms explosive mixtures wilh certain combustible materials. Difficult to burn, but will accelerate burning of combustible materials. Prolonged exposure to fire or heat may result in an explosion. Used in explosives, pyrotechnics, photography.

Air & Water Reactions

Slight solubility in water (7.55 mg /mL of cold water).

Reactivity Profile

Potassium perchlorate is a strong oxidizing agent. Explosively decomposes at or over 400°C. Decomposed by organic matter (reducible material) and on concussion [Merck 11th ed. 1989]. Mixture with powdered magnesium is a friction-sensitive explosive [Safety Eng. Reports 1947]. Incompatible with reducing agents, such as: metal powders aluminum, titanium, barium, magnesium, nickel, and various metal hydrides, sulfur.


Fire risk in contact with organic materials, strong oxidizing agent. Strong irritant.

Health Hazard

Inhalation, ingestion or contact (skin, eyes) with vapors or substance may cause severe injury, burns or death. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may cause pollution.

Fire Hazard

These substances will accelerate burning when involved in a fire. Some may decompose explosively when heated or involved in a fire. May explode from heat or contamination. Some will react explosively with hydrocarbons (fuels). May ignite combustibles (wood, paper, oil, clothing, etc.). Containers may explode when heated. Runoff may create fire or explosion hazard.

Safety Profile

An experimental teratogen. A powerful oxidizer. Severe irritant to skin, eyes, and mucous membranes. Has been implicated in aplastic anemia. Absorption can cause methemoglobinemia and hdney injury. It has been involved in many industrial explosions. Explodes on contact with aluminum + barium nitrate + potassium nitrate + water. Forms explosive mixtures with aluminum powder + titanium dioxide, ethylene glycol (240°C), cotton lint (245°C), furfural (27O°C), lactose, metal powders (e.g., aluminum, iron, magnesium, molybdenum, nickel, tantalum, titanium), sulfur, titanium hydride. Reaction with ethanol + heat forms the explosive ethyl perchlorate. Violent reaction or igmtion under the proper conditions with aluminum + aluminum fluoride, barium chromate + tungsten or titanium, boron + magnesium + silicone rubber, ferrocenium lammine- tetrahs(thiocyanat0-N) chromate(1-), potassium hexacyanocobaltate(3-), Al + Mg, charcoal, F2, Ni + Ti, reducing agents. When heated to decomposition it emits very toxic fumes of K2O and Cl-. See also PERCHLORATES.

Purification Methods

It crystallises from boiling water (5mL/g) on cooling. Dry it under vacuum at 105o.

Potassium perchlorate Preparation Products And Raw materials

Raw materials

Preparation Products

Potassium perchlorate Spectrum

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