| Identification | More | [Name]
Potassium perchlorate | [CAS]
7778-74-7 | [Synonyms]
POTASSIUM PERCHLORATE
Potassium superchlorate
Astrumal
Irenal
Irenat
KClO4
KM potassium perchlorate
Perchloracap
perchloratedepotassium
Perchloric acid, potassium salt
Perchloric acid, potassium salt (1:1)
perchloricacid,potassiumsalt
perchloricacid,potassiumsalt(1:1)
Periodin
Peroidin
Potassium hyperchloride
Potassium perchlorate anh
potassiumhyperchloride
potassiumperchlorate(kclo4)
potassium hyperchlorate | [EINECS(EC#)]
231-912-9 | [Molecular Formula]
ClKO4 | [MDL Number]
MFCD00011362 | [Molecular Weight]
138.55 | [MOL File]
7778-74-7.mol |
| Chemical Properties | Back Directory | [Appearance]
colourless crystals or white powder | [Melting point ]
400 °C (dec.)(lit.) | [Boiling point ]
400°C | [density ]
2.52 | [vapor density ]
4.8 (vs air) | [vapor pressure ]
0Pa@25°C | [storage temp. ]
Store at +5°C to +30°C. | [solubility ]
H2O: 0.1 M at 20 °C, clear, colorless
| [form ]
Powder | [color ]
Clear colorless to slightly yellow | [Specific Gravity]
2.52 | [Odor]
Odorless | [PH]
5.0 (10g/l, H2O, 25℃) | [PH Range]
5.0 - 6.5 | [Stability:]
Stable. Strong oxidiser-contact with combustible materials may lead to fire or explosion. Incompatible with reducing agents, organic materials. Forms explosive mixtures with alcohols. | [Water Solubility ]
17 g/L (20 ºC) | [Sensitive ]
Hygroscopic | [Merck ]
14,7653 | [Solubility Product Constant (Ksp)]
pKsp: 1.98 | [CAS DataBase Reference]
7778-74-7(CAS DataBase Reference) | [NIST Chemistry Reference]
Potassium perchlorate(7778-74-7) | [EPA Substance Registry System]
7778-74-7(EPA Substance) |
| Safety Data | Back Directory | [Hazard Codes ]
O,Xn | [Risk Statements ]
R9:Explosive when mixed with combustible material.
R22:Harmful if swallowed. | [Safety Statements ]
S13:Keep away from food, drink and animal feeding stuffs .
S22:Do not breathe dust .
S27:Take off immediately all contaminated clothing . | [RIDADR ]
UN 1489 5.1/PG 2
| [WGK Germany ]
1
| [RTECS ]
SC9700000
| [TSCA ]
Yes | [HazardClass ]
5.1 | [PackingGroup ]
II | [HS Code ]
28299000 | [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. | [Hazardous Substances Data]
7778-74-7(Hazardous Substances Data) |
| Hazard Information | Back Directory | [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. | [Reactivity Profile]
POTASSIUM PERCHLORATE(7778-74-7) 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. | [Air & Water Reactions]
Slight solubility in water (7.55 mg /mL of cold water). | [Hazard]
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. | [Chemical Properties]
Potassium perchlorate occurs as a colorless crystal or crystalline powder. It decomposes at 400℃ and may also decompose by organic matter, oxidizable substances and on concussion. Potassium perchlorate is soluble in 65 parts cold water, 15 parts boiling water and is practically insoluble in alcohol.
| [Physical properties]
Colorless crystals or white crystalline powder; rhombohedral structure;density 2.52 g/cm3; melts around 610°C under controlled conditions; decomposes at 400°C; slightly soluble in cold water 0.75 g/100mL at 0°C, soluble in boiling water, 21.8 g/100mL at 100°C; practically insoluble in alcohol; insoluble in ether. | [Uses]
In explosives, pyrotechnics and photography, in analytical chemistry. | [Uses]
Potassium perchlorate is used in ammunition percussion caps, explosive primers, fireworks and propellants. It acts as a solid rocket propellant. It is also used as an oxidizer in colored pyrotechnic compositions and flash powder. It is used as an antithyroid and involved in the treatment of hyperthyroidism. The mixture of anthracene and sulfur with potassium perchlorate is used for generating black smoke signaling. | [Uses]
Potassium perchlorate,is the first such compound discovered, is used in pyrotechnics and has the highest percentage of oxygen (60.1%). | [Indications]
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. | [Preparation]
The potassium perchlorate can be separated from the potassium chloride because it is less soluble in water; however, the preferred production route involves anodic oxidation of cold chloride solutions using a high voltage and high current density. The alkali perchlorates can also be prepared by neutralizing perchloric acid with alkali carbonates, or by metathesis between ammonium perchlorate and alkali sulphates. | [Flammability and Explosibility]
Notclassified(100%) | [Purification Methods]
It crystallises from boiling water (5mL/g) on cooling. Dry it under vacuum at 105o. |
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