CAS 6303-21-5: Phosphinic acid

Description: Phosphinic acid, with the CAS number 6303-21-5, is an organophosphorus compound characterized by the presence of a phosphorus atom bonded to a hydroxyl group (-OH) and a hydrogen atom, making it a simple phosphonic acid. It typically appears as a colorless to pale yellow liquid and is soluble in water and organic solvents. Phosphinic acid is known for its role as a reducing agent and is utilized in various chemical syntheses and applications, including as a stabilizer in polymer formulations and as a precursor in the production of phosphine derivatives. The compound exhibits moderate acidity, with a pKa value indicating its ability to donate protons in solution. Additionally, phosphinic acid can participate in various chemical reactions, including esterification and amidation, making it versatile in organic synthesis. Safety considerations include handling it with care, as it may pose health risks upon exposure. Overall, phosphinic acid is an important compound in both industrial and research settings due to its unique chemical properties.

Formula: H₃O₂P

InChI: InChI=1S/H3O2P/c1-3-2/h3H2,(H,1,2)

InChI key: InChIKey=ACVYVLVWPXVTIT-UHFFFAOYSA-N

SMILES: O=[PH2]O

Synonyms:

• Acide phosphinique
• Acido Fosfinico
• Dihydroxyphosphine
• Hydroxyphosphine oxide
• Hypophosphorous acid
• Phosphine oxide, hydroxy-
• Phosphinsaure
• Phosphonous acid
• Phosphinic acid

Hydriodic acid, 57% w/w aqueous solution stabilized with 1.5% hypophosphorus acid, Thermo Scientific™

CAS: 10034-85-2 6303-21-57732-18-5

Hydriodic acid is used to convert primary alcohol into alkyl iodide. It is used in …

• Formula: HI
• Purity: 1.5%
• Color and Shape: Clear colorless to yellow to orange to red-brown, Liquid
• Molecular weight: 127.91

Hypophosphorous acid, 50% w/w aq. soln.

CAS: 6303-21-5

Hypophosphorous acid is primarily used for electroless nickel plating. It is involved in the reduction …

• Formula: H₃O₂P
• Color and Shape: Clear colorless to white, Liquid
• Molecular weight: 66.00

Hypophosphorous acid, 50 wt.% solution in water

CAS: 6303-21-5

This Thermo Scientific Chemicals brand product was originally part of the Acros Organics product portfolio. …

• Formula: H₃O₂P
• Color and Shape: Clear colorless, Solution
• Molecular weight: 66.00

Hypophosphorous Acid-d3(50% w/w in D2O)

CAS: 57583-56-9 6303-21-5

• Color and Shape: Colorless Liquid

Hypophosphorous Acid pure, 30-32% in water

CAS: 6303-21-5

• Formula: H₃PO₂
• Purity: min. 30-32%
• Color and Shape: Clear, Liquid
• Molecular weight: 66.00

Hypophosphorous Acid extrapure AR, 50% in water

CAS: 6303-21-5

• Formula: H₃PO₂
• Purity: min. 50%
• Color and Shape: Clear, Colourless, Liquid
• Molecular weight: 66.0