What is hypophosphorous acid used for

what is hypophosphorous acid used for

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HYPOPHOSPHOROUS ACID decomposes when heated into phosphoric acid and spontaneously flammable phosphine. Is oxidized by sulfuric acid with release of sulfur dioxide and sulfur. Reacts explosively with mercury (II) oxide [Mellor, , Vol. 4, ]. Reacts violently with mercury (II) nitrate [Mellor, , Vol. 4, ]. Jul 17,  · Hypophosphorous Acid Uses. Bleaching Agent – Hypophosphorous Acid is used as a bleaching or decolorizing agent for plastics, synthetic fibers, and chemicals. Color Stabilizer – HPA is used as a decolorizing agent and for color stabilization during the manufacture of chemicals and several plastics including: nylon fibers, polyamides, polyester fiber, polyacrilonitrile, alkyd rsins, .

What is this information? Department of Transportation hazard labels, and a general description of the chemical. Colorless oily liquid or deliquescent crystals with a sour odor. Density 1. Melting point Inhalation of vapors irritates or burns the respiratory tract. Liquid and vapors may irritate or burn eyes and skin.

The Hazard fields include special hazard alerts air and water reactions, fire hazards, health hazards, a reactivity profile, and details about reactive groups assignments and potentially incompatible absorbents. Some are oxidizers and may ignite combustibles wood, paper, oil, clothing, etc. Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated. ERG, Contact with molten substance may cause severe burns to skin and eyes. Avoid any skin contact. Effects of contact or inhalation may be delayed.

Is oxidized by sulfuric acid with release of sulfur dioxide and sulfur. Reacts explosively with mercury II oxide [Mellor,Vol. Reacts violently with mercury II nitrate [Mellor,Vol. Neutralizes bases in exothermic reactions. Reducing Agents, Strong Acids, Weak. The Response Recommendation fields include isolation and evacuation distances, as well as recommendations for firefighting, non-fire response, protective clothing, and first aid.

Move containers from fire area if you can do it without risk. Dike fire-control water for later disposal; do not scatter the material. Do not get water inside containers. Usrd containers with flooding quantities of water until well after fire is out. Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank. Do not touch damaged containers or spilled material unless wearing appropriate protective clothing.

Stop leak if you can do it without risk. Prevent entry into hyppophosphorous, sewers, basements or confined areas. Absorb or cover with acix earth, sand or other non-combustible material and transfer to containers. Wear chemical protective clothing that is specifically recommended by the manufacturer. It may provide little or no thermal protection. Structural firefighters' protective clothing provides limited protection in fire situations ONLY; it is not effective in spill situations where direct contact with the substance is possible.

Fabric legend and testing details. Normalized breakthrough times the time at which the permeation rate is equal to 0. A different temperature may have significant influence on the breakthrough time; permeation rates typically increase with temperature.

Unless otherwise stated, permeation was measured for single chemicals. The hypophosphrous characteristics of mixtures can deviate considerably from the permeation behavior of the individual chemicals.

A blank cell indicates the fabric has not been tested. The fabric may or may not offer barrier. More Info It is the user's responsibility to determine the level of toxicity and the proper personal protective equipment needed.

The information set forth herein reflects laboratory performance of fabrics, not complete garments, under controlled conditions. It is intended for informational use by persons what part of the rainforest does the sloth live in technical skill for evaluation under their specific end-use conditions, at their own discretion and risk.

Anyone intending to use this information should first verify that the garment selected is suitable for the intended use. In many cases, seams and closures have hypkphosphorous breakthrough times and higher permeation rates than the fabric. Please contact DuPont for specific data. What expenses are tax deductible for rental properties fabric becomes torn, abraded or punctured, or if seams or closures fail, or if attached gloves, visors, etc.

Since conditions of use are outside our control, we make no warranties, express or implied, including, without limitation, no warranties of merchantability or fitness for a particular use and assume no liability in connection with any use of this information. This information is not intended as a license to operate under or a recommendation to infringe any patent or technical information of DuPont or others covering any material or its use.

Move victim to fresh air. Call or emergency medical service. Give artificial respiration if victim is not breathing. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; give artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device.

Administer oxygen if breathing is difficult. Remove and isolate contaminated clothing and shoes. In case of contact with substance, immediately flush skin or eyes with running water for at least 20 minutes. For minor skin contact, avoid spreading material on unaffected skin. Keep victim calm and warm. Effects of exposure inhalation, ingestion or wht contact to substance may be delayed.

The Physical Property fields include properties such as vapor pressure and boiling point, as well as explosive limits and toxic exposure thresholds The hypophossphorous in CAMEO Chemicals comes from a variety of data sources. Autoignition Temperature: data unavailable. Vapor Density Relative to Air : data unavailable. The Regulatory Information fields include information from the U. This section provides a listing of alternate names for this chemical, including trade accid and synonyms.

Chemical Identifiers

Hypophosphoric Acid Structure. Hypophosphoric Acid Uses. Used as a bleaching agent; Used as a reducing agent; Used as a wetting agent; Used as a stimulant in pharmaceutical agents; To learn more about such chemistry topics register to BYJU’S now! Sep 25,  · Hypophosphorous acid is commonly used by large industry as a bleaching, color stabilization or decoloring agent for plastics, synthetic fibers (primarily polyester) and chemicals. It is also used in the preparation of hypophosphite salts, which are in turn used in synthetic fibers as wetting agents, dispersing agents, anti-static agents and emulsifying agents.

Hypophosphorous acid HPA , or phosphinic acid , is a phosphorus oxyacid and a powerful reducing agent with molecular formula H 3 PO 2. It is a colorless low-melting compound, which is soluble in water, dioxane, and alcohols.

The formula for this acid is generally written H 3 PO 2 , but a more descriptive presentation is HOP O H 2 , which highlights its monoprotic character. Salts derived from this acid are called hypophosphites. Sometimes the minor tautomer is called hypophosphorous acid and the major tautomer is called phosphinic acid. Hypophosphorous acid was first prepared in by the French chemist Pierre Louis Dulong — The acid is prepared industrially via a two step process: Firstly, hypophosphite salts of the alkali and alkaline earth metals result from the reaction of white phosphorus with hot aqueous solution of the appropriate hydroxide , e.

Ca OH 2. The salt is then treated with a strong, non-oxidizing acid to give the free hypophosphorous acid:. Anhydrous acid cannot be obtained by simple evaporation of the water, as the acid ready oxidises to phosphorous acid and phosphoric acid and also disproportionates to phosphorous acid and phosphine. Pure anhydrous hypophosphorous acid can be formed by the continuous extraction of aqueous solutions with diethyl ether.

Its main industrial use is for electroless nickel plating Ni—P , although it is primarily used as a salt sodium hypophosphite. Owing to its ability to function as a mild reducing agent and oxygen scavenger it is sometimes used as an additive in Fischer esterification reactions, where it prevents the formation of colored impurities.

It is used to prepare phosphinic acid derivatives. Because hypophosphorous acid can reduce elemental iodine to form hydroiodic acid , which is a reagent effective for reducing ephedrine or pseudoephedrine to methamphetamine , [11] the United States Drug Enforcement Administration designated hypophosphorous acid and its salts as a List I precursor chemical effective November 16, Organophosphinic acids have the formula R 2 PO 2 H.

The two hydrogen atoms directly bound to phosphorus in phosphinic acid are replaced by organic groups. The Cyanex family of dialkylphosphinic acids are used in hydrometallurgy to extract metals from ores. From Wikipedia, the free encyclopedia. Chemical compound. Not to be confused with Hypophosphoric acid. CAS Number. Interactive image. D Y. PubChem CID. Chemical formula. Solubility in water. Molecular shape. Related phosphorus oxoacids. Main article: Phosphinate. General Chemistry 9th ed. Handbook of Inorganic Chemicals.

Chemistry of the Elements 2nd ed. ISBN Since the phosphine gas left the solution and the barium phosphate precipitated, only the barium hypophosphite remained in solution. Hypophosphorous acid could then be obtained from the filtrate by adding sulfuric acid, which precipitated barium sulfate, leaving hypophosphorous acid in solution.

Philadelphia, Pennsylvania: Blanchard and Lea, , p. Journal of the Electrochemical Society. Brown; Brent L. Iverson; Eric Anslyn; Christopher S. Foote Organic Chemistry. Cengage Learning. Organic Syntheses. ISSN Archived from the original on Retrieved Hydrogen compounds. Categories : Hydrogen compounds Phosphorus oxoacids Phosphinic acids Reagents for organic chemistry Reducing agents. Namespaces Article Talk. Views Read Edit View history. Help Learn to edit Community portal Recent changes Upload file.

Download as PDF Printable version. Wikimedia Commons. Acidity p K a. JT Baker. Phosphorous acid Phosphoric acid.

Sodium hypophosphite Barium hypophosphite. N verify what is Y N? Infobox references.

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