Safe Handling of Perchloric acid in the Laboratory, J. Chem Educ. Rinse mouth with water. Other applications of … Schilt, A. The rock powder and acids are added to a teflon tube on a hot plate and evaporated to dryness. Therefore, aqueous solutions do not form anhydrous perchloric acid by evaporation. The second route involves the use of electrodes in which the anodic oxidation of chlorine which is dissolved in water takes place at a platinum electrode. Such materials can become highly flammable and may ignite spontaneously or even explode after absorbing perchloric acid liquid or vapor.
Do not heat perchloric acid of any concentration.
The MSU EHS Hazardous Waste Professionals can dispose of unneeded perchloric acid at no charge to your laboratory. When we do this we use a mixture of nitric acid, hydroflouric acid, and perchloric acid for the initial digestion.
This system is required to prevent the buildup of explosive perchlorates in the ductwork. Ingesting this compound can cause blistering and burns in the stomach. The reaction gives nitrous oxide and perchloric acid due to a concurrent reaction involving the ammonium ion.. Anhydrous and monohydrated perchloric acid can explode, and it slowly decomposes at normal temperature. Therefore, perchloric acid is widely used in the electronics industry as well. © 1997-2020 LUMITOS AG, All rights reserved, https://www.chemeurope.com/en/encyclopedia/Perchloric_acid.html, Your browser is not current.
This form of the acid is stable indefinitely and is commercially available.
These areas should be posted with a label stating "Perchloric Acid Use Only. Anhydrous perchloric acid is an oily liquid. DO NOT use dry chemical fire extinguishing agents containing ammonium compounds (such as some A:B:C agents), since an explosive compound can be formed. How to Handwash, Handrub and Remove Gloves? In a related method, barium perchlorate reacts with dilute sulfuric acid to precipitate barium sulfate, leaving only perchloric acid in solution. ; CRC Press LLC: Boca Raton, Florida, 1995. General emergency response information can be found at Emergency Info. According to the CRC "Handbook of Laboratory Safety", perchloric acid is extremely hazardous. The following … DO NOT EVAPORATE TO DRYNESS. Perchloric acid becomes a strong oxidizer when … Additional Information on Perchlorates. AVOID USE OF ORGANIC CHEMICALS IN HOODS OR OTHER FUME REMOVAL DEVICES USED FOR PERCHLORIC ACID DIGESTIONS. Sweep up the neutralized spill with a non-flammable material and then clean the spill area thoroughly with water. Store the acid only in a corrosives-storage cabinet; do not store concentrations equal to or greater than 40% perchloric acid in wood cabinets.
(2nd edition in press), 2. This shows the difference in strength among the strong acids. This will form the anhydride, which is extremely unstable. 4. Solutions below 73% at room temperature are strong non-oxidizing acids. Mostly the impurity levels are defined. Never use perchloric acid while alone and notify others when in use. Philadelphia, PA 19104, E [email protected]
In the event of a fire, the best extinguishing agent is water. Since it acts as a super acid, perchloric acid is considered to be one of the strongest Bronsted-Lowry acids. Read what you need to know about our industry portal chemeurope.com. Perchloric acid is a colorless, odorless, oily liquid that is extremely corrosive. Dilute by adding perchloric acid to water, not by adding water to acid.
Perchloric acid is used in dilute form. J. Chem. 6.
Limit stored quantities to what is needed for the next 6-12 months; do not store perchloric acid over extended periods of time. Its preparation should be avoided. Using Perchloric Acid (< 72%) at Room Temperature At room temperature, perchloric acid up to concentrations of 72% has properties similar to other strong mineral acids. The use of dilute solutions is advised, whenever possible. The perchlorate ion (ClO4-) is highly reactive and potentially explosive. Perchloric acid reacts with alcohols and certain other organic compounds to form highly unstable and explosive perchlorate esters.
Perchloric acid should be stored segregated from all other chemicals and inside secondary containment (such as a pyrex baking dish or plastic dish pan).
For more details see the Fact Sheet: Gas-Producing Waste. This compound can be corrosive towards the skin. Perchloric acid forms an azeotrope with water at a concentration of 72.5% perchloric acid. A. Perchloric acid and perchlorates, G. F. Smith Chemical Company: Columbus, OH, 1979.
Perchloric acid is an oxidizer; therefore, flooding quantities of water spray or fog should be used to fight fires involving perchloric acid. Do NOT mix concentrated perchloric acid (>72%) with organic chemicals if temperatures could rise above ambient levels. Consult the Safety Data Sheet for a material to learn more about its specific toxicity and physical hazards.
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