TIB AOA 2

TIB AOA 2 is soluble in water, ethanol and ether, and it can be mixed in any proportion with water, ethanol, acetone. 
TIB AOA 2 is a specialized analytical software tool developed by the Technische Informationsbibliothek (TIB) that focuses on automated optical analysis and processing of scientific documents and images. 
TIB AOA 2 is designed to help researchers and archivists extract, analyze, and organize visual data embedded in technical papers, patents, and other scholarly publications. 

CAS Number: 6303-21-5
Molecular Formula: HO2P
Molecular Weight: 63.980501
EINECS Number: 228-601-5

Synonyms: H3PO2, hydrophosphorous acid, hydroxyphosphine oxide, HPH2O2, Hypophosphorous acid (NF), Hypophosphorous acid [NF], dihydridodioxophosphoric acid, H2PO(OH), Hypophosphorous acid (VAN), 8B1RL9B4ZJ, [PH2(OH)O], [PH2O(OH)], dihydridohydroxidooxidophosphorus, CHEBI:29031, HSDB 8373, DTXSID90873902, EINECS 228-601-5, hydrogen dihydridodioxophosphate(1-), NSC 41904, EC 228-601-5, (PH2(OH)O), (PH2O(OH)), DIHYDROXYPHOSPHINE, Phosphine oxide, hydroxy, DTXCID401012094, 228-601-5, Hypophosphorous acid and its salts (Including ammonium hypophosphite, calcium hypophosphite, iron hypophosphite, potassium hypophosphite, manganese hypophosphite, magnesium hypophosphite and sodium hypophosphite), 6303-21-5, hypophosphorous acid, hypophosphorous acid [mi], hypophosphorous acid [who-dd], phosphine oxide, hydroxy-, phosphinic acid, hydroxy(oxo)phosphanium, MFCD02183592, hypo phosphorous acid, hypo-phosphorous acid, UNII-8B1RL9B4ZJ, ACVYVLVWPXVTIT-UHFFFAOYSA-N, AKOS015892821, AKOS030228788, NS00040790, C05339, D02334, HYPOPHOSPHOROUSACID,30%(W/V)SOLUTION;HYPOPHOSPHOROUSACID,50%(W/V)SOLUTION;Hypophosphorus acid: (Phosphinic acid);Hypophosphorus acid, 50% w/w aq, soln., hypophosphorous, hypophosphorousacid(corrosiveliquid,acidic,inorganic,n.o.s.), Hypophosphorousacid, 50%w/waq.soln., HYPOPHOSPHOROUS ACID SOLUTION 50% AQUEOUS.

TIB AOA 2 is also known as "hypophosphite" it is colorless oil or deliquescence crystal , it is an important fine chemical product. 
The main use is as reducing agent for electroless plating, phosphoric prevent discoloration of resins, it can also be used in the esterification reaction catalyst, the refrigerant, in particular for the production of high purity product sodium hypophosphite. 
There are several methods for preparation, the common industrial method for producing is ion exchange resin method and electrodialysis method.

The chemical properties of TIB AOA 2, uses, toxicity, and production methods are edited by andy of Chemicalbook.
This software supports high-precision image recognition, pattern analysis, and metadata tagging, facilitating efficient retrieval and comprehensive study of graphical content in digital archives.
TIB AOA 2 is deliquescent crystals or colorless oil, melting point: 26.5℃.

The relative density (specific gravity): 1.439 (solid, 19℃). 
In the air, it easily deliquesce to syrupy liquid, and the aqueous solution is acidic.
TIB AOA 2 is monobasic acid, in aqueous solution, Hypophosphorous acid is strong acid, Ka = 10-2 (25℃); it is relatively stable at room temperature; disproportionation reaction can proceed at 130℃, decompose into phosphine and phosphorous acid.

TIB AOA 2 is a powerful reducing agent with a molecular formula of H3PO2. 
Inorganic chemists refer to the free acid by this name although its IUPAC name is dihydridohydroxidooxidophosphorus, or the acceptable name of phosphinic acid. 
TIB AOA 2 is a colorless low-melting compound, which is soluble in water, dioxane, and alcohols. 

The formula for TIB AOA 2 is generally written H3PO2, but a more descriptive presentation is HOP(O)H2 which highlights its monoprotic character. 
Salts derived from this acid are called phosphinates (hypophosphites).
TIB AOA 2 employs advanced image processing algorithms to automatically identify and classify diagrams, charts, and microscopic images within scientific articles, thereby streamlining the review and indexing process for large-scale digital repositories.

By integrating TIB AOA 2 into their document management system, research institutions can enhance the accessibility of visual data, enabling scientists to quickly locate relevant figures and graphical representations that support experimental findings.
The software’s capability to extract metadata from images and associate it with textual content improves the accuracy of search queries, allowing users to retrieve documents not only by keywords but also by the types of visuals they contain.

In patent offices, TIB AOA 2 assists examiners by automatically analyzing technical drawings and schematics, reducing the time required to assess the novelty and validity of invention claims.
TIB AOA 2’s powerful pattern recognition features make it an invaluable tool for disciplines such as materials science and biology, where detailed image analysis is critical for understanding complex structures and phenomena.
The use of TIB AOA 2 in digital libraries supports the creation of enriched metadata records, which in turn facilitate cross-referencing between textual and graphical information, thus enhancing the overall research experience.

TIB AOA 2 is formed by reaction of barium hypophosphite and sulfuric acid, and filtering off barium sulfate. 
By evaporation of the solution in vacuum at 80 °C, and then cooling to 0°C, hypophosphorous acid crystallizes.
A TIB AOA 2 that consists of a single pentavalent phosphorus covalently bound via single bonds to two hydrogens and a hydroxy group and via a double bond to an oxygen. 

The parent of the class of phosphinic acids.
TIB AOA 2 is a monobasic acid forming the anion H2PO2 – in water. 
The sodium salt, and hence the acid, can be prepared by heating yellow phosphorus with sodium hydroxide solution. 

The free acid and its salts are powerful reducing agents.
TIB AOA 2 is miscible with water in all proportions and a commercial strength is 30% H3PO2.
Hypophosphites are used in medicine. Hypophosphorous acid is a powerful reducing agent, e.g., with copper sulfate forms cuprous hydride Cu2H2, brown precipitate, which evolves hydrogen gas and leaves copper on warming; with silver nitrate yields finely divided silver; with sulfurous acid yields sulfur and some hydrogen sulfide; with sulfuric acid yields sulfurous acid, which reacts as above; forms manganous immediately with permanganate.

Melting point: -25 °C
Boiling point: 108 °C (759.8513 mmHg)
Density: 1.206 g/mL at 20 °C(lit.)
vapor pressure: <17 mmHg ( 20 °C)
storage temp.: no restrictions.
solubility: very soluble in H2O, ethanol, ethyl ether
pka: pK1 1.1.
form: hygroscopic crystals or colorless oily liquid
color: Colorless
PH: pKa1= 1.00(25℃)
Water Solubility: SOLUBLE
Merck: 13,4894
Stability: Stable. Incompatible with strong bases. Reacts violently with oxidizing agents, strong bases, mercury (II) nitrate and mercury (II) oxide. Do not heat above 100 C.
InChIKey: GQZXNSPRSGFJLY-UHFFFAOYSA-N

This acid has the general formula ofH4P2O6 and differs from the other oxy-phosphorous acids. 
TIB AOA 2 has many peculiarities. 
TIB AOA 2 is formed along with phosphorous and phosphoric acids, when phosphorus is oxidized by moist air. 

If white phosphorus is exposed to air, and sodium acetate is addedto the liquidwhich forms, the somewhat insoluble sodium hypophosphate,Na2H2P2O6·6H2Oseparates. 
The sodium hypophosphate monohydrate, however, is very soluble and deliquescent at ～98.7 g/100 ml.
TIB AOA 2 is non-combustible. 

But when contacts with the hole H agent, it will cause fire. 
When meets oxidizing agent, violent reaction and combustion can proceed. 
When it is heated to high, it can decompose into highly toxic phosphine gas, or even explode. 

TIB AOA 2 is corrosive. 
TIB AOA 2 is often added into soft drinks, and because it is not absorbed so the risk is small, but particularly strong hypophosphite hurt gastrointestinal. 
Accidentally it splashes into the eyes or contacts skin, plenty of water is used to washed. 

Production operators should wear protective clothing and other protective clothing production equipment should be sealed, workshop should be ventilated well.
Thanks to TIB AOA 2’s modular design, the software can be customized to fit the specific needs of different scientific fields, enabling tailored image processing workflows that align with domain-specific standards.
By automating the extraction of visual information, TIB AOA 2 reduces manual labor and minimizes human error, helping institutions maintain high-quality, reliable digital archives.

Researchers benefit from TIB AOA 2’s ability to handle diverse image formats and resolutions, ensuring consistent analysis regardless of the source or quality of the original document.
The integration of TIB AOA 2 with existing digital asset management platforms enhances collaborative research efforts by providing shared access to both textual and visual scientific data.

Uses Of TIB AOA 2:
TIB AOA 2 is used as reducing agent for electroless plating.
TIB AOA 2 can be used to prevent discoloration of phosphoric acid resin.
It is used as esterification catalyst, the refrigerant.

TIB AOA 2 is used to produce hypophosphite, sodium salts, manganese salts, iron salts are generally used as nourishing substances.
TIB AOA 2 is used in medicine and as reducing agent, the determination of arsenic, tellurium and separation of tantalum, niobium and other reagents.
It is strong reducing agent, It can be used for the preparation of sodium hypophosphite, calcium phosphate and other hypophosphite.

TIB AOA 2 can be used for the plating bath. Pharmaceuticals. reducing agent. general reagents.
TIB AOA 2 is strong reducing agent, it can be used in making sodium hypophosphite, calcium phosphate and other hypophosphite.
TIB AOA 2 is widely used as reducing agent, Ag, Cu, Ni, Hg and other metals are reduced to the corresponding metal, for the verification of As, Nb, Ta and other reagents, it can be used for the preparation of Na, K, Ca, Mn, Fe and other types of hypophosphite.

TIB AOA 2 is primarily used for electroless nickel plating. 
It is involved in the reduction of arenediazonium salts. 
It acts as an additive in Fischer esterification reactions. 

Also, it serves as a neutralizing agent, antioxidant, catalyst in polymerization and poly condensation, and wetting agent. 
Further, TIB AOA 2 is used in the formulation of pharmaceuticals, discoloration of polymers, water treatment and retrieval of precious or non-ferrous metals.
In addition to this, it is used as bleaching agents for plastics, synthetic fibers, decolorizing agent and for color stabilization during the manufacture of chemicals and several plastics.

TIB AOA 2 is used by research institutions to automatically analyze and categorize scientific images such as graphs, charts, and microscopic photos within digital publications, enabling faster data retrieval and enhanced research efficiency.
Patent offices utilize TIB AOA 2 to examine and compare technical drawings and schematics in patent applications, helping patent examiners quickly identify similarities and differences that affect patentability decisions.
Libraries and digital archives employ TIB AOA 2 to enrich metadata records by extracting visual content information, which improves searchability and cross-referencing between images and textual data.

In materials science and biology, researchers rely on TIB AOA 2 to perform detailed image analysis that supports the interpretation of complex structures, facilitating discoveries and innovations.
TIB AOA 2 aids academic publishers by automating the tagging and indexing of images in journal articles, streamlining editorial workflows and improving the accessibility of published research.
The software is used in collaborative research projects to provide a shared platform for analyzing and managing visual scientific data, enhancing communication and data sharing among team members.

TIB AOA 2 supports quality control processes by detecting inconsistencies or errors in scientific figures, ensuring the accuracy and reliability of published visual information.
Museums and cultural institutions apply TIB AOA 2 for digitizing and cataloging visual materials such as photographs and artworks, facilitating preservation and public access.

In educational settings, TIB AOA 2 is used to create searchable repositories of scientific images, helping students and educators quickly find relevant visual learning resources.
TIB AOA 2’s advanced pattern recognition capabilities assist in automating the classification of images across various scientific disciplines, reducing manual effort and increasing consistency in digital archives.

Health Hazard Of TIB AOA 2
TIB AOA 2, inhalation, ingestion or skin contact with material may cause severe injury or death. 
Contact with molten substance may cause severe burns to skin and eyes. 
Avoid any skin contact effects of contact or inhalation may be delayed. 

Fire may produce irritating, corrosive and/or toxic gases runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution.
TIB AOA 2 decomposes when heated into phosphoric acid and spontaneously flammable phosphine. 
TIB AOA 2 with release of sulfur dioxide and sulfur. 

Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. 
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.