2,4-Difluorobenzaldehyde
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2,4-Difluorobenzaldehyde
structure -
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CAS No:
1550-35-2
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Formula:
C7H4F2O
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Chemical Name:
2,4-Difluorobenzaldehyde
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Synonyms:
Benzaldehyde,2,4-difluoro-;2,4-Difluorobenzaldehyde;4-Fluoro-2-fluorobenzaldehyde;4,6-Difluorobenzaldehyde
- Categories:
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CAS No:
Characteristics
17.1
1.8
Clear colorless Liquid
1.299 g/mL at 25 °C(lit.)
65-66 °C
62-63 °C
131 °F
n 20/D 1.498(lit.)
Flammables area
123mmHg at 25°C
Safety Information
III
3
UN 1989 3/PG 3
3
10-36/37/38
26-36-37/39-16-36/37
Xi
Irritant
P261-P305 + P351 + P338
H226-H315-H319-H335
|Warning|H226 (100%): Flammable liquid and vapor [Warning Flammable liquids]|P210, P233, P240, P241, P242, P243, P261, P264, P271, P280, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P370+P378, P403+P233, P403+P235, P405, and P501|Aggregated GHS information provided by 47 companies from 6 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
2,4-Difluorobenzaldehyde Use and Manufacturing
(1) Device: Refer to Figure 2 to determine the connection of the tubular reactor. The pipe types are: (3a + 3b) DC type channel +Round cakes pulse diameter adjustable rectangular flat pipe, pipe diameter and volume based on the flow rate and reaction residence time to determine the heat transfer mediumHeat conducting oil.(2) 6.06 g of cobalt acetate and 6.06 g of sodium molybdate were respectively dissolved in 200 ml of 2, 4-difluorotoluene and 200 ml of acetic acidInto a mixed solution, at this time n (cobalt acetate): n (2, 4-difluorotoluene) = 0.015: 1 6.06g sodium bromide was dissolved in 30percent H2O2 to form H2O2-acetic acid solution, then n Sodium): n (2, 4-difluorotoluene) = 0.015: 1, 2, 4- difluorotoluene-acetic acid solutionWith and H2O2-acetic acid solution at a flow rate of 5.33 ml / min and 10.67 ml / min, respectively, through a constant flow pump into the tubeType reactor, n (H2O2): n (2, 4-difluorotoluene) = 2: 1, using the microchannel reactor in Figure 2, the reaction temperature is controlled105 , residence time 400s. The outlet was cooled at 0 ° C and the reaction quenched with difluoromethane. After GC analysis, 2, 4-difluoromethaneThe conversion of benzene was 49.5percent and the yield of 2, 4-difluorobenzaldehyde was 31.1percent.General procedure: A mixture of alcohol (5.0 mmol), Cu(OAc)
Intermediate for medicine, pesticide, liquid crystal material.
Computed Properties
Molecular Weight:142.10
XLogP3:1.8
Hydrogen Bond Acceptor Count:3
Rotatable Bond Count:1
Exact Mass:142.02302107
Monoisotopic Mass:142.02302107
Topological Polar Surface Area:17.1
Heavy Atom Count:10
Complexity:127
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes
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