| Identification | More | [Name]
Phenylphosphinic acid | [CAS]
1779-48-2 | [Synonyms]
4,4'-dihydroxy-2,2-diphenylpropane
BENZENEPHOSPHINIC ACID
BENZENEPHOSPHONOUS ACID
BPA
PHENYLPHOSPHINIC ACID
PHENYLPHOSPHONOUS ACID
Benzolphosphonigsαure
Hydroxyphenylphosphine oxide
hydroxyphenylphosphineoxide
NSC2670
phenyl-phosphinicaci
Phosphinicacid,phenyl-
Phosphonousacid,phenyl-
Phenylphosphinicacid,99%
phenylphospho acid | [EINECS(EC#)]
217-217-3 | [Molecular Formula]
C6H7O2P | [MDL Number]
MFCD00002131 | [Molecular Weight]
142.09 | [MOL File]
1779-48-2.mol |
| Chemical Properties | Back Directory | [Appearance]
white crystals or crystalline powder | [Melting point ]
83-85 °C(lit.)
| [Boiling point ]
180 °C
| [density ]
1.376 | [storage temp. ]
Sealed in dry,Room Temperature | [solubility ]
DMSO (Slightly), Water (Slightly, Heated) | [form ]
Crystalline Solid | [pka]
pK1:2.1 (17°C) | [color ]
White | [Water Solubility ]
7.7 g/100 mL (25 ºC) | [BRN ]
2802244 | [Uses]
Antioxidant, intermediate for metallic-salt formation, accelerator for organic peroxide catalysts. | [CAS DataBase Reference]
1779-48-2(CAS DataBase Reference) | [NIST Chemistry Reference]
Phosphinic acid, phenyl-(1779-48-2) | [EPA Substance Registry System]
1779-48-2(EPA Substance) |
| Safety Data | Back Directory | [Hazard Codes ]
C,Xn | [Risk Statements ]
R22:Harmful if swallowed.
R34:Causes burns.
R41:Risk of serious damage to eyes.
R37/38:Irritating to respiratory system and skin . | [Safety Statements ]
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) . | [RIDADR ]
UN 3261 8/PG 3
| [WGK Germany ]
3
| [RTECS ]
SZ5462500
| [TSCA ]
Yes | [HazardClass ]
8 | [PackingGroup ]
III | [HS Code ]
29309099 |
| Hazard Information | Back Directory | [Chemical Properties]
white crystals or crystalline powder | [General Description]
Phenylphosphinic acid is also known as phenylphosphonous acid. Kinetics of oxidation of phenylphosphinic acid by metal and non metal oxidants was investigated in a study.2 | [Purification Methods]
Crystallise it from H2O (solubility is 7.7% at 25o). Also purify it by placing the solid in a flask covered with dry Et2O, and allowed it to stand for 1day with intermittent shaking. Et2O is decanted off and the process repeated. After filtration, excess Et2O is removed in a vacuum. It has also been recrystallised from *C6H6. [Michaelis Justus Liebigs Ann Chem 181 265 1876, Banks & Skoog Anal Chem 29 109 1957, NMR: Van Wazer et al. J Am Chem Soc 78 5715 1956, Beilstein 16 IV 1033.] |
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