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:
|Combustible Material||Metal Powders|
|Finely Divided Materials||Organic Materials|
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).
Storage: Inorganic #6
Shelf Life: Indefinite if stored safely.
Soluble: Boiling water.
CAS No. 3811-04-9
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 e-mail us to obtain a free copy of Chem Fax No. 1001, which describes a safe method involving the use of dry ice to measure molar volume.
Flinn Catalog/Reference Manual Page 120
Flinn Middle School Catalog/Reference Manual Page 71
Potassium Chlorate, Laboratory Grade, 2 kg