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Perchlorate concentration was the highest in Chilean nitrate, ranging from 3.3 to 3.98%. [51] Perchlorate in the solid fertilizer ranged from 0.7 to 2.0 mg g −1, variation of less than a factor of 3 and it is estimated that sodium nitrate fertilizers derived from Chilean caliche contain approximately 0.5–2 mg g −1 of perchlorate anion. [74]
The chlorate was also measured in rainfall samples with the amount of chlorate similar to perchlorate. It is suspected that chlorate and perchlorate may share a common natural formation mechanism and could be a part of the chlorine biogeochemistry cycle. From a microbial standpoint, the presence of natural chlorate could also explain why there ...
Sodium perchlorate is an inorganic compound with the chemical formula Na Cl O 4. It consists of sodium cations Na + and perchlorate anions ClO − 4. It is a white crystalline, hygroscopic solid that is highly soluble in water and ethanol. It is usually encountered as sodium perchlorate monohydrate NaClO 4 ·H 2 O.
Potassium perchlorate in crystal form. Potassium perchlorate is prepared industrially by treating an aqueous solution of sodium perchlorate with potassium chloride.This single precipitation reaction exploits the low solubility of KClO 4, which is about 1/100 as much as the solubility of NaClO 4 (209.6 g/100 mL at 25 °C).
An example is hydronium perchlorate. Perchloric acid forms an azeotrope with water, consisting of about 72.5% perchloric acid. This form of the acid is stable indefinitely and is commercially available. Such solutions are hygroscopic. Thus, if left open to the air, concentrated perchloric acid dilutes itself by absorbing water from the air.
Chlorates are salts of chloric acid. They contain the (ClO 3 −) anion. The stock naming convention distinguishes four chlorates, based on the oxidation state of the chlorine within the oxyanion. The stock and common names are: Chlorate(I) = Hypochlorite; Chlorate(III) = Chlorite; Chlorate(V) = Chlorate; Chlorate(VII) = Perchlorate
Rubidium perchlorate can be obtained through the careful heating of a rubidium chlorate solution, leading to a disproportionation reaction with the release of oxygen gas: [3] 2 RbClO 3 → RbClO 4 + RbCl + O 2. When heated, it decomposes into the chloride and oxygen: [4] RbClO 4 → RbCl + 2 O 2. It has two polymorphs.
It may be produced from barium chlorate through its reaction with sulfuric acid, which results in a solution of chloric acid and insoluble barium sulfate precipitate: [2] Ba(ClO 3) 2 + H 2 SO 4 → 2 HClO 3 + BaSO 4. The chlorate must be dissolved in boiling water and the acid should be somewhat diluted in water and heated before mixing.