2,4-Difluorobenzaldehyde
- Product Name
- 2,4-Difluorobenzaldehyde
- CAS No.
- 1550-35-2
- Chemical Name
- 2,4-Difluorobenzaldehyde
- Synonyms
- 2,4-Difluorobenzalde;2,4-fluorobenzaldehyde;4-Difluorobenzaldehyde;2,4-DIFLUOROBENZALDEHYDE;Benzaldehyde, 2,4-difluoro-;Of 2,4-difluorobenzaldehyde;2,4-Difluorobenzaldehyde98%;2,4-Difluorobenzaldehyde>2,4-DifluorobenzaldehydeQty;2,4-Difluoro-1-formylbenzene
- CBNumber
- CB3222690
- Molecular Formula
- C7H4F2O
- Formula Weight
- 142.1
- MOL File
- 1550-35-2.mol
2,4-Difluorobenzaldehyde Property
- Melting point:
- 2-3 °C (lit.)
- Boiling point:
- 65-66 °C/17 mmHg (lit.)
- Density
- 1.299 g/mL at 25 °C (lit.)
- refractive index
- n20/D 1.498(lit.)
- Flash point:
- 131 °F
- storage temp.
- Inert atmosphere,2-8°C
- form
- Liquid
- Specific Gravity
- 1.299
- color
- Clear colorless
- Sensitive
- Air Sensitive
- BRN
- 2243422
- InChI
- InChI=1S/C7H4F2O/c8-6-2-1-5(4-10)7(9)3-6/h1-4H
- InChIKey
- WCGPCBACLBHDCI-UHFFFAOYSA-N
- SMILES
- C(=O)C1=CC=C(F)C=C1F
- CAS DataBase Reference
- 1550-35-2(CAS DataBase Reference)
- NIST Chemistry Reference
- 2,4-Difluorobenzaldehyde(1550-35-2)
Safety
- Hazard Codes
- Xi
- Risk Statements
- 10-36/37/38
- Safety Statements
- 26-36-37/39-16-36/37
- RIDADR
- UN 1989 3/PG 3
- WGK Germany
- 3
- F
- 10-23
- Hazard Note
- Irritant
- HazardClass
- 3
- PackingGroup
- III
- HS Code
- 29130000
Hazard and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Warning
- Hazard statements
-
H226Flammable liquid and vapour
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
- Precautionary statements
-
P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
P302+P352IF ON SKIN: wash with plenty of soap and water.
P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
N-Bromosuccinimide Price
- Product number
- 265179
- Product name
- 2,4-Difluorobenzaldehyde
- Purity
- 98%
- Packaging
- 5g
- Price
- $30.03
- Updated
- 2025/07/31
- Product number
- 265179
- Product name
- 2,4-Difluorobenzaldehyde
- Purity
- 98%
- Packaging
- 25g
- Price
- $68.81
- Updated
- 2025/07/31
- Product number
- D2839
- Product name
- 2,4-Difluorobenzaldehyde
- Purity
- >98.0%(GC)
- Packaging
- 5g
- Price
- $34
- Updated
- 2025/07/31
- Product number
- D2839
- Product name
- 2,4-Difluorobenzaldehyde
- Purity
- >98.0%(GC)
- Packaging
- 25g
- Price
- $115
- Updated
- 2025/07/31
- Product number
- D452438
- Product name
- 2,4-Difluorobenzaldehyde
- Packaging
- 1g
- Price
- $45
- Updated
- 2021/12/16
2,4-Difluorobenzaldehyde Chemical Properties,Usage,Production
Chemical Properties
clear colorless liquid
Uses
2,4-Difluorobenzaldehyde was used in the synthesis of 3-benzylidene 20,29-dihydrobetulinic acid derivatives.
General Description
The emission and absorption spectra of 2,4-difluorobenzaldehyde were studied.
Synthesis
452-76-6
1550-35-2
(1) Device: Refer to Figure 2 to configure the tubular reactor system. The reactor adopts (3a + 3b) type DC channel and round cake pulse diameter adjustable rectangular flat tube combination design, the specific tube diameter and volume need to be calculated according to the reactant flow and the required residence time to determine, the heat transfer medium selection of heat transfer oil. (2) Preparation of catalyst solution: dissolve 6.06 g of cobalt acetate and 6.06 g of sodium molybdate in 200 mL of 2,4-difluorotoluene and 200 mL of acetic acid, respectively, and mix them well to ensure that n (cobalt acetate): n (2,4-difluorotoluene) = 0.015: 1. Preparation of oxidizer solution: dissolve 6.06 g of sodium bromide in 30% H2O2 to form a solution of H2O2-acetic acid. . Subsequently, 2,4-difluorotoluene-acetic acid solution and H2O2-acetic acid solution were injected into a tubular reactor via a constant flow pump at a flow rate of 5.33 mL/min and 10.67 mL/min, respectively, controlling n(H2O2): n(2,4-difluorotoluene) = 2: 1. The reaction was carried out in a microchannel reactor (shown in Fig. 2) at a temperature maintained at 105 °C and a residence time of 400 s. After completion of the reaction, the outlet material was cooled to 0 °C and quenched with dichloromethane. The conversion of 2,4-difluorotoluene was 49.5% and the yield of 2,4-difluorobenzaldehyde was 31.1% by GC analysis.
References
[1] Patent: CN106588600, 2017, A. Location in patent: Paragraph 0040-0066
[2] Kogyo Kagaku Zasshi, 1956, vol. 59, p. 1160
[3] Chem.Abstr., 1958, p. 13265
[4] Monatshefte fuer Chemie, 1959, vol. 90, p. 683,687
[5] Patent: US5998477, 1999, A
2,4-Difluorobenzaldehyde Preparation Products And Raw materials
Raw materials
Preparation Products
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View Lastest Price from 2,4-Difluorobenzaldehyde manufacturers
- Product
- 2,4-Difluorobenzaldehyde 1550-35-2
- Price
- US $0.00-0.00/KG
- Min. Order
- 1KG
- Purity
- 98
- Supply Ability
- 10000KGS
- Release date
- 2025-12-02
- Product
- 2,4-Difluorobenzaldehyde 1550-35-2
- Price
- US $0.00-0.00/KG
- Min. Order
- 1KG
- Purity
- 99%
- Supply Ability
- 20 mt
- Release date
- 2024-11-18
- Product
- 2,4-Difluorobenzaldehyde 1550-35-2
- Price
- US $8.00-3.00/KG
- Min. Order
- 1KG
- Purity
- 99%
- Supply Ability
- g-kg-tons, free sample is available
- Release date
- 2024-04-03