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Bis(2,4,4-Trimethylpentyl) Phosphinic Acid (BTMPP)
Identification
Synonyms: Diisooctylphosphinic Acid; BTMPP; BTMPPA; Cyanex 272
CAS No.: 83411-71-6;
EC No.: 280-445-7
Molecular Weight: 290.42
Molecular Formula: C16H35O2P
M.p.: °C
B.p.:300°C (1 atm)
F.p.: 108°C
Structural Formula: 
Preparation
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Application
Bis(2,4,4-trimethylpentyl)phosphinic acid (BTMPP) is applied as a solvent extractant in hydrometallurgy to seperate cobalt from nickle, rare earth metals etc.
Specification*
| Active content | 85%, 88%, 96% min. |
|---|---|
| Specific gravity | ~0.94 |
| Solubility in water | 30ppm max. |
| b.p. | 300°C min. |
| f.p. | 108°C min. |
| Appearance | Colorless to pale yellow liquid |
Standard Packaging
20 or 165kgs/plastic drum
Packaging photos coming soon
Risks and Safety Information
Bis(2,4,4-trimethylpentyl)phosphinic acid (BTMPP) is not regulated by UN or US DOT as hazmat
R 22 Harmful if swallowed.
R 36 Irritating to eyes
S 26 In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
S 37/39 Wear suitable gloves and eye/face protection.
No Hazard