perchloric acid uses

As a counterpart, the strength of acids is reduced. Inform DRS if crystals have formed around the neck and cap of the bottle. Association of Official Analytical Chemists. How to Handwash, Handrub and Remove Gloves? Anhydrous perchloric acid is an oily liquid. Ingesting this compound can cause blistering and burns in the stomach. Date the bottle once it is opened and clearly mark the concentration on the bottle.

1972, 49, A463-A464.

See SOP: Explosive Compounds for guidance on handling potentially explosive materials such as perchlorate salts. Do not heat perchloric acid in an oil bath. The MSU EHS Hazardous Waste Professionals can dispose of unneeded perchloric acid at no charge to your laboratory. The solubility of sodium perchlorate in water c…

Remove contaminated clothing. Store perchloric acid with other inorganic acids and away from organic chemicals and reducers, especially alcohols, glycerol, and hypophosphites.

Solvents must never be stored near a designated perchloric acid area at any time. The solubility of sodium perchlorate in water corresponds to 2090 grams per litre at room temperatures. When we do this we use a mixture of nitric acid, hydroflouric acid, and perchloric acid for the initial digestion. Publication Date:June 1, 1973., 3160 Chestnut Street Researchers using or anticipating using perchloric acid in their experiments should keep the following in mind: 1. F (215) 898-0140, ©2020 University of Pennsylvania Environmental Health & Radiation Safety | Report accessibility issues & get help, Purchase of perchloric acid solutions that exceed concentrations of 40% (w/w), Any procedure that requires heating of perchloric acid of any concentration. Perchloric acid becomes a strong oxidizer when … Pitt, M. J. It forms a series of hydrates, several of which have been characterized crystallographically.The dihydrate is representative: the solid consists of the perchlorate anion linked to H 2 O and H 3 O + centers via hydrogen bonds. The SOP:  Explosive Compounds applies to the use of perchlorate salts. Concentrated perchloric acid is used to disslove rocks and minerals for chemical analysis. Flammable Storage in Laboratory Refrigerators, Formaldehyde Guidelines for Student Anatomy Labs, Fume Hoods and Local Exhaust Ventilation (LEV), Senior Vice President for Research and Innovation. Never use perchloric acid while alone and notify others when in use. This compound is also used in analytical chemistry owing to its unique properties. When handling perchloric acid, workers should use a fume hood and wear proper personal protective equipment (PPE).

This compound is also used in the etching of liquid crystal display systems (often abbreviated to LCD).

Anhydrous perchloric acid is highly unstable, explodes upon contact with organic material, and explodes spontaneously at room temperature after storage for a few days.

There are no fume hoods currently on campus that can safely accommodate perchloric acid digestions.

It becomes unstable, reacts with oxidizable substances, and may detonate. Available in multiple grades, perchloric acid is chiefly used to create perchlorate salts, such as ammonium perchlorate, a key rocket fuel component. J. Chem. Wear appropriate personal protective equipment. Perchloric acid is an extremely powerful oxidant. The perchlorate ion (ClO4-) is highly reactive and potentially explosive.

At a minimum, a cotton lab coat, safety glasses and nitrile gloves must be worn for working with perchloric acid at any concentration. If solutions containing perchloric acid are filtered through a paper filter, the filter (and precipitate) should be washed thoroughly with water to remove all perchlorate before being allowed to dry. Furr, A. K., CRC Handbook of Laboratory Safety, 4th ed.

...IN WET COMBUSTIONS WITH PERCHLORIC ACID, TREAT SAMPLE FIRST WITH NITRIC ACID TO DESTROY EASILY OXIDIZABLE ORG MATTER UNLESS OTHERWISE SPECIFIED. Institutional Biosafety Committee Registration, Authorization to Use Radioactive Materials, Non-laboratory Uses of Radioactive Materials, Safety Training Curriculum & Prerequisites, Access Training Records & Print Certificates, Safe Handling of Human Cell Lines/Materials in a Research Laboratory, Awareness Training for the Transport of Hazardous Material, Transportation of Infectious Substances Category B, Occupational Exposure to Bloodborne Pathogens, Biological Materials Requiring Incineration, Equipment Containing Radioactive Materials, Process for Decontaminating Laboratory Equipment, Biological Samples Stored in Liquid Nitrogen, Risk Group 2 Biological Materials Storage, Forms for Working with Radioactive Materials, Electrical Safety in the Research Laboratory, Institutional Animal Care and Use Committee, Office for the Protection of Human Subjects. 1. It is a strong acid comparable in strength to sulfuric acid or nitric acid. 4.

Inhaling vapours of this compound causes burning sensation in the throat and nose, irritation in lung along with coughing. Perchloric acid forms an azeotrope with water, about 72.5% perchloric acid. It is normally supplied in bottles of up to one gallon in capacity at 70-72% strength. Perchloric acid should be stored segregated from all other chemicals and inside secondary containment (such as a pyrex baking dish or plastic dish pan).

Perchloric acid is a mineral acid with the formula HClO4.

However, the alternate method is considered to be more expensive. This system is required to prevent the buildup of explosive perchlorates in the ductwork. Hydrates of perchloric acid are obtained on its dissolution in water. Used as a reagent to determine the 1H-Benzotriazole. When we do this we use a mixture of nitric acid, hydroflouric acid, and perchloric acid for the initial digestion.

Application Perchloric acid has been used to deactivate chloramine-T during the spectrophotometric determination of collagen content of the rat tibialis anterior (TA) tendons and tendon constructs. If a protocol requires the heating of a perchloric acid solution, contact EHRS. ; Urben, P. G. Used for electropolishing or etching of molybdenum. Treatment of such a solution of sodium perchlorate in water with hydrochloric acid results in the formation of perchloric acid along with a precipitate of sodium chloride. Rinse mouth with water. Limit stored quantities to what is needed for the next 6-12 months; do not store perchloric acid over extended periods of time. The requirements in Penn's Chemical Hygiene Plan SOP: Corrosives  apply to all work involving perchloric acid. Perchloric acid is one of the strongest acids known. It is a superacid, but it is not the strongest Brønsted-Lowry acid (which is fluoroantimonic acid, HFSbF5). Your browser does not support JavaScript. Perchloric acid, HClO4, is an oxoacid of chlorine and is a colorless liquid soluble in water. Educ.1973, 50, 6, A335. An explosion or fire may result when concentrated (72+%), heated perchloric comes in contact with organic or combustible materials. Treating this solution with hydrochloric acid (HCl) produces perchloric acid by precipitating solid sodium chloride. Its pKa is −10.[1]. Ed. Dispose of bottles with discolored perchloric acid solutions immediately. It is a highly corrosive substance and causes severe burns on contact with the eyes, skin, and mucous membranes. Therefore, perchloric acid is widely used in the electronics industry as well. Concentrated perchloric acid (72%) heated above 150⁰C is a strong oxidizer, and reacts violently with organic material, which has resulted in devastating explosions in the past.

It is normally supplied in bottles of up to one gallon in capacity at 70-72% strength.

Perchloric acid is an oxidizer; therefore, flooding quantities of water spray or fog should be used to fight fires involving perchloric acid.

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