phenylphosphinic acid

Basic Information

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CAS Number

1779-48-2

Molecular Formula

C6H6O2P+

Molecular Weight

142.09 g/mol

Chemical Classification

Basic Chemical Raw Materials Organic Chemicals Carboxylic Acids

Fine Chemicals Dyes and Pigments Organic Dyes

Agricultural Chemicals Pesticides Insecticides

Basic Physical Properties

Melting Point

83.0 to 88.0 deg-C

Boiling Point

180 ºC

Water Solubility

7.7 g/100 mL (25 ºC)

Flash Point

204 C

SMILES

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C1=CC=C(C=C1)[P+](=O)O

InChI

InChI=1S/C6H7O2P/c7-9(8)6-4-2-1-3-5-6/h1-5,9H,(H,7,8)

InChIKey

MLCHBQKMVKNBOV-UHFFFAOYSA-N

LogP

0.7788999999999999

Topological Polar Surface Area

37.3 Å²

Hydrogen Bond Donor/Acceptor

1 / 2

Complexity

108

Safety Information

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Hazard Statement

H290 May be corrosive to metals
Corrosive to Metals

H302 Harmful if swallowed
Acute toxicity, oral

H314 Causes severe skin burns and eye damage
Skin corrosion/irritation

Hazard Class

Class 8 Class 8

Synonyms & References

English

1779-48-2
FT-0649246
DTXSID80859679
[Oxo(phenyl)-lambda~5~-phosphanylidene]oxidanium
Phenylphosphinic acid, 99%
SCHEMBL36107
CERAPP_16137
AKOS015890488
J-011334
Benzenephosphonous acid
BP-21028
H12022
C6H7O2P
Phosphinic acid, phenyl-
NSC 2670
phenyl phosphinic acid
EN300-7406631
121-70-0
Phosphinic acid, P-phenyl-
hydroxy-oxo-phenylphosphanium
MFCD00002131
NSC2670
B0025
NCGC00248629-01
NS00001990
CS-0064373
DTXSID70923631
Phenylphosphinic acid
Benzenephosphinic acid
BENZENEPHOSPHINIC ACID
BENZENEPHOSPHONOUS ACID

MDL Number

MFCD00002131

Customs Code

2916399090

FAQ

What are the physical and chemical properties of phenylphosphinic acid (CAS: 1779-48-2)?

Phenylphosphinic acid (CAS: 1779-48-2) is a white crystalline solid with a molecular weight of approximately 132.12 g/mol. It is slightly soluble in water and has a pKa of about 2.3. The compound is reactive towards nucleophiles and can undergo substitution reactions. It is stable under normal conditions but should be stored in a cool, dry place away from moisture and oxidizing agents.

How is phenylphosphinic acid (CAS: 1779-48-2) typically synthesized?

Phenylphosphinic acid can be synthesized via the reaction of phenylphosphine oxide with a strong acid like hydrochloric acid. The process involves the nucleophilic attack of phenylphosphine oxide on the hydrogen of the acid, leading to the formation of the acid. The reaction is typically carried out in a solvent such as methanol or ethanol, and the product is isolated by precipitation or extraction.

What industries use phenylphosphinic acid (CAS: 1779-48-2)?

Phenylphosphinic acid (CAS: 1779-48-2) is used in various industries due to its reactivity and functionality. It is utilized in the pharmaceutical industry for the synthesis of certain drugs, in polymer science for modifying polymer properties, in sensor technology for developing sensitive detection systems, and in semiconductor manufacturing for etching and cleaning processes.

What precautions should be taken when handling phenylphosphinic acid (CAS: 1779-48-2)?

When handling phenylphosphinic acid (CAS: 1779-48-2), it is important to wear appropriate personal protective equipment (PPE) including gloves, goggles, and a lab coat. The compound should be handled in a well-ventilated area or a fume hood to prevent inhalation. In case of a spill, it should be immediately cleaned up, and appropriate spill cleanup procedures should be followed. Always consult the Safety Data Sheet (SDS) for detailed information on handling and disposal.