04434

Sodium hypophosphite

puriss., meets analytical specification of BPC63, anhydrous, 98-101%

• Linear Formula: NaPH₂O₂
• CAS Number: 7681-53-0
• Molecular Weight: 87.98
• EC Number: 231-669-9
• MDL number: MFCD09265474
• UNSPSC Code: 12352300
• eCl@ss: 38070302
• PubChem Substance ID: 329747926
• NACRES: NA.21

Properties

• Quality Level: 200
• grade: puriss.
• Assay: 98-101%
• form: powder or crystals
• quality: meets analytical specification of BPC63
• impurities: ≤0.001% heavy metals (as Pb); ≤0.2% free alkali (as CaO)
• loss: ≤1% loss on drying, 105 °C, 2 h
• solubility: water: soluble 909 g/L at 30 °C
• density: 1.77 g/cm³ at 20 °C
• anion traces: chloride (Cl^-): ≤200 mg/kg; sulfate (SO₄^2-): ≤200 mg/kg
• cation traces: As: ≤2 mg/kg; Fe: ≤10 mg/kg
• SMILES string: [Na+].[O-][PH2]=O
• InChI: 1S/Na.H3O2P/c;1-3-2/h;3H2,(H,1,2)/q+1;/p-1
• InChI key: SIGUVTURIMRFDD-UHFFFAOYSA-M

Description

General description

Sodium hypophosphite, also known as sodium phosphinate, is a sodium salt of hypophosphorous acid. It is used as a reducing agent for the reduction of metal salts to metals in an aqueous solution. It is also employed as a source of hydrogen in heterogeneous catalytic transfer reductions.

Application

• Synthesis and characterization of chitosan-copper nanocomposites and their catalytic properties for 4-nitrophenol reduction.: This study explores the synthesis of chitosan-copper nanocomposites using sodium hypophosphite as a reducing agent. The resulting nanocomposites are characterized and their catalytic properties for the reduction of 4-nitrophenol are evaluated, demonstrating the utility of sodium hypophosphite in catalytic applications (Pang et al., 2024).


• The Durable Chitosan Functionalization of Cellulosic Fabrics.: This research focuses on the durable functionalization of cellulosic fabrics with chitosan using sodium hypophosphite as a cross-linking agent. The study highlights the improved properties of the fabrics, showcasing sodium hypophosphite′s role in textile enhancement (Flinčec Grgac et al., 2023).


• Hypophosphite cross-linked starch succinate/chitosan membranes as alternative for packaging and pharmaceutical application.: The study investigates the development of starch succinate/chitosan membranes cross-linked with sodium hypophosphite, proposing these materials as potential alternatives for packaging and pharmaceutical applications (Bajer, 2023).


• Tensile Strength Improvements of Ramie Fiber Threads through Combination of Citric Acid and Sodium Hypophosphite Cross-Linking.: This research improves the tensile strength of ramie fiber threads by combining citric acid and sodium hypophosphite for cross-linking, demonstrating significant enhancements in fiber properties for industrial applications (Wulandari et al., 2023).


• Nickel-Catalyzed Sodium Hypophosphite-Participated Direct Hydrophosphonylation of Alkyne toward H-Phosphinates.: This study demonstrates a novel nickel-catalyzed hydrophosphonylation of alkynes using sodium hypophosphite. The research showcases the efficiency of sodium hypophosphite in producing H-phosphinates, highlighting its significance in chemical synthesis (Qian et al., 2023).

Safety Information

• Storage Class Code: 13 - Non Combustible Solids
• WGK: WGK 2
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable