Name | pentafluoropropionic acid |
Synonyms | IPC-PFFA-3 uoropropionic Acid Pentafluorpropionsure PERFLUOROPROPIONIC ACID PERFLUOROPROPANOIC ACID pentafluoro-propionicaci pentafluoropropionic acid Propanoic acid, pentafluoro- Propionic acid, pentafluoro- silver(1+) pentafluoropropanoate 2,2,3,3,3-Pentafluoropropanoic acid 2,2,3,3,3-PENTAFLUOROPROPIONIC ACID |
CAS | 422-64-0 |
EINECS | 207-021-6 |
InChI | InChI=1/C3HF5O2.Ag/c4-2(5,1(9)10)3(6,7)8;/h(H,9,10);/q;+1/p-1 |
InChIKey | LRMSQVBRUNSOJL-UHFFFAOYSA-N |
Molecular Formula | C3HF5O2 |
Molar Mass | 164.03 |
Density | 1.561 g/mL at 25 °C (lit.) |
Boling Point | 96-97 °C (lit.) |
Flash Point | None |
Water Solubility | Soluble in water |
Vapor Presure | ~40 mm Hg ( 20 °C) |
Vapor Density | ~5.6 (vs air) |
Appearance | Liquid |
Specific Gravity | 1.561 |
Color | Clear colorless to slightly brown |
BRN | 1773387 |
pKa | 0.38±0.10(Predicted) |
Storage Condition | Store below +30°C. |
Stability | hygroscopic |
Sensitive | Hygroscopic |
Refractive Index | n20/D 1.284(lit.) |
MDL | MFCD00004170 |
Physical and Chemical Properties | Boiling point 96-97°C(lit.) density 1.561g/mL at 25°C(lit.) vapor density ~ 5.6 (vs air) vapor pressure ~ 40mm Hg (20°C) refractive index n20/D 1.284(lit.) flash point None storage conditions Store at RT. sensitive hygropic BRN 1773387 |
Use | This product is for scientific research only and shall not be used for other purposes. |
Hazard Symbols | C - Corrosive |
Risk Codes | R20 - Harmful by inhalation R34 - Causes burns |
Safety Description | 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 the label whenever possible.) |
UN IDs | UN 3265 8/PG 2 |
WGK Germany | 3 |
RTECS | UF6475000 |
FLUKA BRAND F CODES | 3 |
TSCA | T |
HS Code | 29159080 |
Hazard Note | Corrosive |
Hazard Class | 8 |
Packing Group | III |
Toxicity | LD10 orl-rat: 750 mg/kg GTPZAB10(3),13,66 |
NIST chemical information | Information provided by: webbook.nist.gov (external link) |
EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
use | pentafluoropropionic acid is an organic substance and a colorless liquid. Pentafluoropropionic acid can be used as a fluoroalkylation reagent in the field of fluorine-containing medicine and fluorine-containing pesticides. At the same time, the downstream products of pentafluoropropionic acid are very rich, such as the synthesized pentafluoropropanol, which can be used in the fields of electronics and precision instruments; the synthesized pentafluoropropionyl halide can be used to prepare fluorine-containing special polymers. Peroxidation initiator, this kind of fluorine-containing peroxide initiator has the advantages of low initiation temperature, few by-products, perfluorinated substituent groups at the end, and good stability. It is a necessary initiator for the preparation of high-purity fluoropolymer. Therefore, the production of pentafluoropropionic acid has certain economic value. |
preparation | a co-production process of hexafluoroisopropyl methyl ether and pentafluoropropionic acid:(1) weigh 32g of methanol into a 250mL round bottom flask, add 8.1g of sodium methoxide into the round bottom flask, stir until fully dissolved, and obtain sodium methoxide methanol solution;(2) weigh 31.6g of perfluoro -2-methyl -2,3-epoxypentane is in the sodium methoxide methanol solution in step 1), the round bottom flask is sealed, placed in a cold bath pot at 0 ℃, stirred and reacted at 700r /min for 2h to obtain a product-containing mixture, the purity of 99.5% hexafluoroisopropyl methyl ether and methyl pentafluoropropionate can be obtained;(4) 400mL of sulfuric acid with a concentration of 1mol/L is added to methyl pentafluoropropionate, stirred at 60 ℃ for 3 hours, and the reaction ends rectification to obtain pentafluoropropionic acid with a purity of 99%. The hexafluoroisopropyl methyl ether co-production pentafluoropropionic acid process uses methoxy alkali metal salt and perfluoro-2-methyl-2, 3-epoxypentane as the main raw materials, and performs ring-opening alkylation under the condition of alcohol solvent conditions to obtain hexafluoroisopropyl methyl ether and pentafluoropropionic acid at the same time, which avoids the problems of expensive hexafluoroisopropanol raw materials in the prior art and the highly toxic dimethyl sulfate as alkylation reagents. The process route is simple, both main products and by-products have economic value and are suitable for industrial application. |