trực tiếp đá gà hôm nay

ChemicalBook >> CAS DataBase List >>2,5-Dibromopyridine

2,5-Dibromopyridine

CAS No.
624-28-2
Chemical Name:
2,5-Dibromopyridine
Synonyms
Dibromopyridine;NSC 76597;5-DibroMopyridine;2,5-Dibrompyridin;2,5-dibromopyridin;2,5 dibromopyrdine;3,6-DibroMopyridine;2,5-DIBROMOPYRIDINE;2,5 Di bromo pyridne;Perampanel Impurity 9
CBNumber:
CB7283491
Molecular Formula:
C5H3Br2N
Molecular Weight:
236.89
MDL Number:
MFCD00006221
MOL File:
624-28-2.mol
MSDS File:
SDS
Last updated:2024-11-17 18:01:30

2,5-Dibromopyridine Properties

Melting point 92-95 °C (lit.)
Boiling point 235 °C / 772mmHg
Density 2.0383 (rough estimate)
refractive index 1.5800 (estimate)
Flash point 62℃
storage temp. Inert atmosphere,Room Temperature
solubility Chloroform (Slightly), Methanol (Slightly)
form Crystalline Powder
pka -1.57±0.10(Predicted)
color Almost white or light beige to brown
Water Solubility insoluble
BRN 109099
InChI InChI=1S/C5H3Br2N/c6-4-1-2-5(7)8-3-4/h1-3H
InChIKey ZHXUWDPHUQHFOV-UHFFFAOYSA-N
SMILES C1(Br)=NC=C(Br)C=C1
CAS DataBase Reference 624-28-2(CAS DataBase Reference)

SAFETY

Risk and Safety Statements

Symbol(GHS)  trực tiếp đá gà hôm nayLiên kết đăng nhập
GHS07
Signal word  Warning
Hazard statements  H335-H302+H312+H332-H315-H319
Precautionary statements  P280a-P304+P340-P305+P351+P338-P405-P501a-P261-P264-P270-P271-P280-P301+P312+P330-P302+P352+P312+P362+P364-P304+P340+P312-P305+P351+P338+P337+P313-P501
Hazard Codes  Xi,Xn
Risk Statements  36/37/38-20/21/22
Safety Statements  26-37/39-36/37/39-36
RIDADR  UN2811
WGK Germany  3
HazardClass  IRRITANT
HS Code  29333999
NFPA 704
0
2 0

2,5-Dibromopyridine price More Price(49)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich D43107 2,5-Dibromopyridine 98% 624-28-2 10g $93.1 2024-06-20 Buy
TCI Chemical D1217 2,5-Dibromopyridine >99.0%(GC) 624-28-2 5g $24 2024-06-20 Buy
TCI Chemical D1217 2,5-Dibromopyridine >99.0%(GC) 624-28-2 25g $66 2024-06-20 Buy
Alfa Aesar A10937 2,5-Dibromopyridine, 97% 624-28-2 10g $78 2024-06-20 Buy
Alfa Aesar A10937 2,5-Dibromopyridine, 97% 624-28-2 50g $286 2024-06-20 Buy
Product number Packaging Price Buy
D43107 10g $93.1 Buy
D1217 5g $24 Buy
D1217 25g $66 Buy
A10937 10g $78 Buy
A10937 50g $286 Buy

2,5-Dibromopyridine Chemical Properties,Uses,Production

Chemical Properties

2,5-Dibromopyridine is an off-white crystalline solid. It is insoluble in water but soluble in strong polar organic solvents. It exhibits strong alkalinity.

Uses

2,5-Dibromopyridine (cas# 624-28-2) is a compound useful in organic synthesis.

Preparation

To synthesize 2,5-dibromopyridine, follow these steps:
Add 2-amino-5-bromopyridine (13.0 kg) into a water-cooled solution at 10 °C.
Slowly add 47% aqueous hydrogen bromide (37 L) to the mixture.
Introduce liquid bromine (11 L) into the mixture.
Maintain the reaction temperature below 10 °C.
Prepare a solution of NaNO2 (16.1 kg) and H2O (19 L) and add it dropwise to the mixture while keeping the temperature between 0-5 °C.
Stir the reaction mixture for 30 minutes.
Treat the mixture with a solution of NaOH (28.0 kg) in water (30 L) at a controlled rate below 20-25 °C.
Extract the reaction mixture with diethyl ether (3 × 40 L).
Dry the organic layer with anhydrous Na2SO4.
Remove the desiccant by filtration.
Evaporate the resulting filtrate under reduced pressure to dryness.
Suspend the residue in heptane (10 L).
Collect the target product molecule, 2,5-dibromopyridine, by filtration.

13466-38-1
624-28-2
Synthesis of 2,5-Dibromopyridine from 2-Hydroxy-5-bromopyridine
Global( 826)Suppliers
Supplier Tel Email Country ProdList Advantage
EAST STAR BIOTECH (SUZHOU) CO., LTD.
+8617706846989 marketing@eaststarbio.com China 48 58
Suzhou Actchem Co., Ltd.
+8618762124502 actchem@qq.com China 27 58
Nanjing New Thinking Chem Co.,Ltd
+8615896017193 nanjingxinsi@163.com China 217 58
Hebei Mojin Biotechnology Co., Ltd
15028179902 +8615028179902 sales@hbmojin.com China 12367 58
Shanghai UCHEM Inc.
+862156762820 +86-13564624040 sales@myuchem.com China 6419 58
Frapp's ChemicalNFTZ Co., Ltd.
+86 (576) 8169-6106 sales@frappschem.com China 885 50
Capot Chemical Co.,Ltd.
571-85586718 +8613336195806 sales@capotchem.com China 29797 60
Henan Tianfu Chemical Co.,Ltd.
+86-0371-55170693 +86-19937530512 info@tianfuchem.com China 21709 55
Shanghai Time Chemicals CO., Ltd.
+86-021-57951555 +8617317452075 jack.li@time-chemicals.com China 1807 55
Fluoropharm Co., Ltd.
+8613336034509 sales@fluoropharm.com China 1290 60

View Lastest Price from 2,5-Dibromopyridine manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
trực tiếp đá gà hôm nayLiên kết đăng nhập 2024-12-19 2,5-Dibromopyridine
624-28-2
US $136.00 / kg 1kg 0.99 100kg Shanghai UCHEM Inc.
trực tiếp đá gà hôm nayLiên kết đăng nhập 2024-09-12 2,5-Dibromopyridine
624-28-2
US $0.00 / KG 1KG 99% 50000KG/month Hebei Mojin Biotechnology Co., Ltd
trực tiếp đá gà hôm nayLiên kết đăng nhập 2023-09-28 2,5-Dibromopyridine
624-28-2
US $0.00-0.00 / kg 1kg 98% 1Ton Henan Aochuang Chemical Co.,Ltd.
2,5-DIBROMOPYRIDINE PYRIDINE, 2,5-DIBROMO- 2,5-Dibromopyridine, 97+% 2,5-dibromopyridin 2,5-DIBROMOPYRIDINE 2,5-DIBROMOPYRIDINE 2,5-Dibromo pyridine ,98% 2,5-DibroMopyridine, 97% 10GR 3,6-DibroMopyridine NSC 76597 5-DibroMopyridine 2, 5-2 broMide pyridine 2,5 Di bromo pyridne 2,5-Dibromopyridine > Perampanel Impurity 9 2,5-Dibromopyridine ISO 9001:2015 REACH 2,5-Dibrompyridin 2,5 dibromopyrdine Hot Sale?2, 5-Dibromopyridine CAS?624-28-2?with Best Price Dibromopyridine Pyronoprene Impurity 17 Nicotinic Acid Impurity 13 624-28-2 324-28-2 Building Blocks Pyridines Halogenated Heterocycles Heterocyclic Building Blocks Bromopyridines Halopyridines alkyl bromide Building Blocks C5 Chemical Synthesis Halogenated Heterocycles Heterocyclic Building Blocks Brominated heterocyclic series Aromatics Bases & Related Reagents Nucleotides Aromatics Compounds Bromopyridines Halopyridines Pyridine series C5Heterocyclic Building Blocks Halogenated Heterocycles Heterocyclic Building Blocks Nitrogen cyclic compounds blocks Bromides Pyridines pyridine derivative Pyridines, Pyrimidines, Purines and Pteredines Halides Pyridine Pyridines derivates bc0001 624-28-2
trò chơi cờ bạc game điện tử máy đánh bạc máy đánh bạc hoàng gia Tải game ăn tiền thật