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CAS No. 13598-36-2
13598-36-2
H3o3p
237-066-7
Phosphorous Acid
Crystal
Agriculture Grade
Strong Acid
Inorganic Acid
Tech Grade
Paper Bag
Polyatomic Acid
Oxidizing Acid
Volatile Acid
Stabilized Acid
Chenghexin
Customized
Phosphorous Acid
China
2811199090
Product Description
| Names | |
|---|---|
| IUPAC name Phosphonic acid | |
| Systematic IUPAC name Phosphorous acid | |
| Other names Dihydroxyphosphine oxide Dihydroxy(oxo)-λ5-phosphane | |
| Identifiers | |
CAS Number |
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3D model (JSmol) |
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| ChEBI |
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| ChEMBL |
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| ChemSpider |
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| ECHA InfoCard | 100.033.682 |
| EC Number |
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Gmelin Reference | 1619 |
| KEGG |
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PubChem CID |
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| RTECS number |
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| UNII |
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| UN number | 2834 |
CompTox Dashboard (EPA) |
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| Properties | |
Chemical formula | H3PO3 |
| Molar mass | 81.99 g/mol |
| Appearance | white solid deliquescent |
| Density | 1.651 g/cm3 (21 °C) |
| Melting point | 73.6 °C (164.5 °F; 346.8 K) |
| Boiling point | 200 °C (392 °F; 473 K) (decomposes) |
Solubility in water | 310 g/100 mL |
| Solubility | soluble in ethanol |
| Acidity (pKa) | 1.1, 6.7 |
Magnetic susceptibility (χ) | −42.5·10−6 cm3/mol |
| Structure | |
Molecular shape | pseudo-tetrahedral |
| Hazards | |
| Occupational safety and health (OHS/OSH): | |
Main hazards | skin irritant |
| GHS labelling | |
Pictograms | |
Signal word | Danger |
Hazard statements | H302, H314 |
Precautionary statements | P260, P264, P270, P280, P301+P312, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, P310, P321, P330, P363, P405, P501 |
Related compounds | H3PO4 (i.e., PO(OH)3) H3PO2 (i.e., H2PO(OH)) |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
Phosphorous acid, H3PO3, is a versatile chemical with several important applications across various industries.
Agriculture Phosphorous acid and its salts, such as phosphonates, are widely used as fungicides and plant nutrients. They help in protecting crops against fungal infections and also play a role in stimulating plant growth by enhancing their natural defense mechanisms.
Chemical Synthesis In the chemical industry, phosphorous acid serves as a reagent or intermediate in the synthesis of other phosphorous-containing compounds. It's utilized in the production of phosphite salts and esters, which have applications ranging from flame retardants to plasticizers and stabilizers.
Water Treatment Phosphorous acid and its derivatives are used in water treatment processes. They can function as scale inhibitors and corrosion inhibitors in cooling systems and boilers, helping to protect metal surfaces and maintain system efficiency.
Metal Treatment In the metal industry, phosphorous acid is used in the pretreatment and finishing of metals. It's involved in processes such as phosphating, which enhances the adhesion of paint and improves rust resistance on metal surfaces.
Plastics and Polymers As a stabilizer, phosphorous acid and its compounds help to prevent the degradation of plastics and polymers during processing and usage, extending the life of these materials.
Pharmaceuticals and Biotechnology In pharmaceutical synthesis, phosphorous acid can be a key intermediate in the production of certain drugs and biologically active molecules. It's used to introduce phosphorus-containing groups into organic molecules.
Agriculture Phosphorous acid and its salts, such as phosphonates, are widely used as fungicides and plant nutrients. They help in protecting crops against fungal infections and also play a role in stimulating plant growth by enhancing their natural defense mechanisms.
Chemical Synthesis In the chemical industry, phosphorous acid serves as a reagent or intermediate in the synthesis of other phosphorous-containing compounds. It's utilized in the production of phosphite salts and esters, which have applications ranging from flame retardants to plasticizers and stabilizers.
Water Treatment Phosphorous acid and its derivatives are used in water treatment processes. They can function as scale inhibitors and corrosion inhibitors in cooling systems and boilers, helping to protect metal surfaces and maintain system efficiency.
Metal Treatment In the metal industry, phosphorous acid is used in the pretreatment and finishing of metals. It's involved in processes such as phosphating, which enhances the adhesion of paint and improves rust resistance on metal surfaces.
Plastics and Polymers As a stabilizer, phosphorous acid and its compounds help to prevent the degradation of plastics and polymers during processing and usage, extending the life of these materials.
Pharmaceuticals and Biotechnology In pharmaceutical synthesis, phosphorous acid can be a key intermediate in the production of certain drugs and biologically active molecules. It's used to introduce phosphorus-containing groups into organic molecules.
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1. Can I get samples?
Yes, free samples are available.
Samples will usually be sent out within 1-3 working days.
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Yes, both product and package can be customized.
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TT, LC, DP are available.
Please note that OME orders require payment prior to shipment.
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Our company has a digital ordering system to ensure scientific and reasonable scheduling of orders, please consult the sales staff you contacted.
5. How to guarantee the product quality?
We have a complete raw material inspection, quality control and pre-factory inspection system to ensure that the order delivered to you is in line with the contract.
In addition, it also supports third-party inspection before shipment. If the inspection fails, the customer's payment will be refunded, and the loss caused by the breach of contract will be compensated.
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7. How to deal with after-sales problems?
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Sincere Industries Co., Ltd., established in 2021, is located in the Huarun Mansion, Longhua District, Haikou City, Hainan Province, boasting a brand-new, ultra 5A-level office environment. Based on the profound corporate culture of Shijiazhuang Chenghexin Chemical, which has more than 20 years of experience, the company fully supports the development of import and export-related businesses for its Hainan branch. The company has a harmonious atmosphere, generous benefits, and offers substantial room for growth.
Since its inception, the company has always adhered to the development philosophy of "integrity, stability, innovation, and precision". It continuously explores and innovates, enhancing the R&D and production capabilities of new products. The company's products are constantly optimized and perfected, and it maintains long-term stable cooperation with domestically powerful factories as well as national and provincial scientific research institutes. This ensures that the products' technology is advanced, quality is stable, and prices are competitive, now forming a professional chemical raw material supply enterprise that combines science, industry, and trade with both domestic and international trade.
In recent years, the company has won several national and provincial awards and titles for being a trustworthy enterprise and has been recognized as a quality and efficiency-oriented enterprise. It has also received accolades and recommendations from internet companies like Baidu, and HC; particularly, it has been featured in a special interview and promotion by the CCTV Securities Information Channel's "Brand Power" program.
After more than 20 years of efforts, the company has continued to grow and expand. Its client base includes highly influential local enterprises, listed companies, and Fortune 500 companies, earning long-term trust and support from both new and old customers. With a bright future ahead, all employees are confident in the company's development.
Since its inception, the company has always adhered to the development philosophy of "integrity, stability, innovation, and precision". It continuously explores and innovates, enhancing the R&D and production capabilities of new products. The company's products are constantly optimized and perfected, and it maintains long-term stable cooperation with domestically powerful factories as well as national and provincial scientific research institutes. This ensures that the products' technology is advanced, quality is stable, and prices are competitive, now forming a professional chemical raw material supply enterprise that combines science, industry, and trade with both domestic and international trade.
In recent years, the company has won several national and provincial awards and titles for being a trustworthy enterprise and has been recognized as a quality and efficiency-oriented enterprise. It has also received accolades and recommendations from internet companies like Baidu, and HC; particularly, it has been featured in a special interview and promotion by the CCTV Securities Information Channel's "Brand Power" program.
After more than 20 years of efforts, the company has continued to grow and expand. Its client base includes highly influential local enterprises, listed companies, and Fortune 500 companies, earning long-term trust and support from both new and old customers. With a bright future ahead, all employees are confident in the company's development.
