Name | Tetrafluoroisophthalonitrile |
Synonyms | PERFLUOROISOPHTHALONITRILE Tetrafluoroisophthalonitrile TETRAFLUOROISOPHTHALONITRILE 6-Tetrafluoroisophthalonitrile 2,4,5,6-Tetrafluoroisophthalonitrile 2,4,5,6-tetrafluorobenzene-1,3-dicarbonitrile Tetrafluoroisophthalonitrile, 1,3-Dicyanoperfluorobenzene, 2,4,5,6-Tetrafluorobenzene-1,3-dicarbonitrile |
CAS | 2377-81-3 |
EINECS | 623-653-9 |
InChI | InChI=1/C8F4N2/c9-5-3(1-13)6(10)8(12)7(11)4(5)2-14 |
InChIKey | WVHMPQKZPHOCRD-UHFFFAOYSA-N |
Molecular Formula | C8F4N2 |
Molar Mass | 200.09 |
Density | 1.6184 (estimate) |
Melting Point | 78-79°C(lit.) |
Boling Point | 113-115 °C(Press: 10 Torr) |
Flash Point | 79 °C |
Solubility | soluble in Methanol |
Vapor Presure | 0.173mmHg at 25°C |
Appearance | Solid |
Color | White to Light yellow |
BRN | 6925899 |
Storage Condition | Sealed in dry,Room Temperature |
Stability | Stability |
Refractive Index | 1.474 |
MDL | MFCD00013290 |
Risk Codes | R20/21/22 - Harmful by inhalation, in contact with skin and if swallowed. R36/37/38 - Irritating to eyes, respiratory system and skin. |
Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S37/39 - Wear suitable gloves and eye/face protection S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. |
UN IDs | 3439 |
WGK Germany | 3 |
HS Code | 29269095 |
Hazard Note | Irritant |
Hazard Class | 6.1 |
Packing Group | III |
application | 2,4,5,6-tetrafluoro-isophthalonitrile can be used as an intermediate in pharmaceutical synthesis, such as the preparation of vodworm, vodworm insect growth regulators, of which vodworm is the better representative. |
preparation | in a 250 ml three-neck bottle, add 150 ml of dried sulfolane, then add 26.6g of dried chlorothalonil, under mechanical stirring, raise the temperature to 70 ℃ to completely dissolve it, quickly add 25.0g of anhydrous potassium fluoride and 0.5g of 18-crown ether -6 as phase transfer catalyst, and install a drying tube on the nozzle on the side, then control the temperature and react between 160-180 ℃ for 8 hours, cool to room temperature, filter to remove the precipitate (KF KCl), and wash with 20 ml of sulfolane for 2-3 times The above precipitate (the weight of the precipitate is about 24.9 grams) is combined with the filtrate, the filtrate is poured into 500 ml of water, magnetically stirred for 2 hours, and 17.6 grams of precipitate is obtained by suction filtration. After drying, cyclohexane is selected for recrystallization, white needle crystal was obtained, weighing about 16.4g (yield 70.7%). |