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F.W. 122.56

Special Hazard Alert: Only pure manganese dioxide (manganese(IV) oxide) should be used with potassium chlorate for oxygen preparation. A safer method is the catalytic decomposition of hydrogen peroxide. You will find this method recited in detail under the oxygen gas listing (Flinn Catalog Nos. LB1025, LB1080).

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Hazard Alert

Strong oxidizer; slightly toxic; irritant. LD50 1870 mg/kg. Extremely dangerous since the substance, if only slightly contaminated, will explode when exposed to moderate shock or when heated. Because this substance is so frequently a source of accidents on school premises we have elected to list some of the incompatible substances which should be avoided: Ammonium Salts, Phosphorus, Carbon, Sulfuric Acid, Combustible Material, Metal Powders, Finely Divided Materials, Organic Materials, Sulfur, Sugar.

Product Details

Inorganic #6
Shelf Life:
Indefinite if stored safely.
Boiling water
CAS No.:
Technical Note:
Potassium Chlorate as an O2 Source: Molar volume is frequently measured by generating O2 using potassium chlorate and manganese dioxide. Molten KClO3 is a powerful oxidizer of organic materials like the rubber in the stoppers used in the generating apparatus. Explosions can and do result. Please call or email us to obtain a free copy of Publication No. 1001, which describes a safe method involving the use of dry ice to measure molar volume.