Bis(2,4,4-trimethylpentyl)phosphinic acid is an organophosphorus compound with significant applications in research and industry, particularly as an extractant and a ligand.
Here is a comprehensive overview of its key specifications:
CAS: 83411-71-6
EC No.: 280-445-7
Formula: C16H35O2P
Mol. wt.: 290.42
Concentration: ≥94%
UN number: 3082
Transport Hazard class: 9
Packing group: III
📋 General Information
CAS Number: There are two CAS numbers associated with this substance in the literature: 83411-71-6 and 27661-42-3.
Molecular Formula: C₁₆H₃₅O₂P
Molecular Weight: 290.42 g/mol
Synonyms: Diisooctylphosphinic acid, Cyanex 272, Ionquest 290.
⚗️ Physical and Chemical Properties
The following table summarizes the key physical and chemical properties of Bis(2,4,4-trimethylpentyl)phosphinic acid.
🧪 Applications
Bis(2,4,4-trimethylpentyl)phosphinic acid is a versatile reagent used in various specialized fields:
Solvent Extraction: It is widely used as an acidic extractant for the separation and recovery of metal ions, such as Indium(III) and other divalent metals (e.g., Zn²⁺, Cu²⁺, Pb²⁺).
Nanomaterial Synthesis: It serves as a surface-passivating ligand in the synthesis of “magic-size” nanocrystals, such as CdSe and CdTe.
Supercritical Fluid Extraction (SFE): The compound acts as an acidic ligand to facilitate the extraction of metals from matrices like sand and fly ash using supercritical CO₂.
⚠️ Safety and Handling
When handling this chemical, it is crucial to follow proper safety protocols.
Hazard Classification: It is classified as an Eye Irritant (Category 2).
Hazard Statement: Causes serious eye irritation (H319).
Precautionary Statements:
Wear protective gloves and eye/face protection.
IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Storage: Store at room temperature in a sealed container. It is considered a combustible liquid.
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