3,5-Difluoropyridine
Synthesis- Product Name
- 3,5-Difluoropyridine
- CAS No.
- 71902-33-5
- Chemical Name
- 3,5-Difluoropyridine
- Synonyms
- 3,5-Difluropyridine;3,5-DIFLUOROPYRIDINE;Pyridine, 3,5-difluoro-;3,5-Difluoropyridine>3,5-Difluoropyridine98%;3,5-Difluoropyridine 98%;3,5-Difluoropyridine ISO 9001：2015 REACH
- CBNumber
- CB4751533
- Molecular Formula
- C5H3F2N
- Formula Weight
- 115.08
- MOL File
- 71902-33-5.mol
3,5-Difluoropyridine Property
- Boiling point:
- 92-93°C
- Density
- 1.256 g/mL at 25 °C
- refractive index
- 1.4437
- Flash point:
- 9°C
- storage temp.
- under inert gas (nitrogen or Argon) at 2-8°C
- form
- clear liquid
- pka
- 0.39±0.20(Predicted)
- color
- Colorless to Almost colorless
- BRN
- 7914363
- InChIKey
- WRXAZPPGFLETFR-UHFFFAOYSA-N
- CAS DataBase Reference
- 71902-33-5(CAS DataBase Reference)
Safety
- Hazard Codes
- Xi,F,N,Xn
- Risk Statements
- 36/37/38-50-20/21/22-11
- Safety Statements
- 26-36/37/39-61-36/37
- RIDADR
- 1993
- WGK Germany
- 3
- Hazard Note
- Highly Flammable/Irritant
- HazardClass
- 3
- PackingGroup
- II
- HS Code
- 29333990
Hazard and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Danger
- Hazard statements
-
H225Highly Flammable liquid and vapour
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
H400Very toxic to aquatic life
- Precautionary statements
-
P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
P273Avoid release to the environment.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.
P303+P361+P353IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.
N-Bromosuccinimide Price
- Product number
- 703923
- Product name
- 3,5-Difluoropyridine
- Purity
- 97%
- Packaging
- 5g
- Price
- $167
- Updated
- 2023/06/20
- Product number
- D4038
- Product name
- 3,5-Difluoropyridine
- Purity
- >98.0%(GC)
- Packaging
- 1g
- Price
- $21
- Updated
- 2024/03/01
- Product number
- D4038
- Product name
- 3,5-Difluoropyridine
- Purity
- >98.0%(GC)
- Packaging
- 5g
- Price
- $81
- Updated
- 2024/03/01
- Product number
- L19539
- Product name
- 3,5-Difluoropyridine, 98%
- Packaging
- 1g
- Price
- $52.65
- Updated
- 2024/03/01
- Product number
- L19539
- Product name
- 3,5-Difluoropyridine, 98%
- Packaging
- 5g
- Price
- $162.65
- Updated
- 2024/03/01
3,5-Difluoropyridine Chemical Properties,Usage,Production
Synthesis
Hydrogenolysis of 2,4,6-tribromo-3,5-difluoropyridine occurred rapidly giving
quantitative conversion to 3,5-difluoropyridine (5), with an isolated yield by distillation
of 63%.
Chemical Properties
Liquid
Preparation
Synthesis of 3,5-Difluoropyridine: A solution of 2,4,6-tribromo-3,5-difluoropyridine (11) (34.0 g, 97 mmol) in DCM (200 cm3) was washed with activated carbon and filtered. A palladium catalyst (3.4 g of a 5% Pd/C commercially available product) and triethylamine (45 cm3, 31.5 g, 312 mmol) were added to the filtrate and the mixture hydrogenated in a Parr apparatus at 4 Bar for 21 h. The mixture was filtered, water (200 cm3) added and extracted into DCM. Distillation of the DCM solution on Fischer-Spaltrohr apparatus gave 3,5-difluoropyridine (7.0 g, 61 mmol, 63%), b.p. 92.5 ·c (Found: C, 52.2; H, 3.0; N, 12.2. C5H3F2N2 requires C, 52.2; H, 3.0; N, 12.2%);
IR spectrum no. 1; mass spectrum no. 1; nrnr spectrum no. 8.
3,5-Difluoropyridine Preparation Products And Raw materials
Raw materials
Preparation Products
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View Lastest Price from 3,5-Difluoropyridine manufacturers
- Product
- 3,5-Difluoropyridine 71902-33-5
- Price
- US $1.10/g
- Min. Order
- 1g
- Purity
- 99.0% min
- Supply Ability
- 100 tons min
- Release date
- 2021-05-26
- Product
- 3,5-Difluoropyridine 71902-33-5
- Price
- US $3.00/KG
- Min. Order
- 1KG
- Purity
- 90%-99.9%
- Supply Ability
- 500kg
- Release date
- 2019-07-04