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4,4-Bipyridine(CAS#553-26-4)

Chemical Property:

Molecular Formula C10H8N2
Molar Mass 156.18
Density 1.2814 (rough estimate)
Melting Point 109-112°C(lit.)
Boling Point 305°C(lit.)
Flash Point 304-305°C
Water Solubility slightly soluble
Solubility 4.5g/l
Vapor Presure 0.00154mmHg at 25°C
Appearance Colorless crystal
Color Off-white to beige
Maximum wavelength(λmax) ['300nm(CH3CN)(lit.)']
Merck 14,3348
BRN 113176
pKa pK1:3.17(+2);pK2:4.82(+1) (25°C)
Storage Condition Store below +30°C.
Stability Stable. Incompatible with strong oxidizing agents, strong acids.
Sensitive Hygroscopic
Refractive Index 1.6057 (estimate)
MDL MFCD00006416
Physical and Chemical Properties Properties: hygroscopic, colorless or light yellow crystals, soluble in ethanol and ether. Soluble in hot water, alcohol, benzene and chloroform. Reagents for the determination of iron, organic synthesis/pharmaceutical intermediates. Cool, dry and sealed storage, inhalation of toxic. Solubility: soluble in ethanol and ether
Use For organic synthesis, pharmaceutical intermediates

Product Detail

Product Tags

Risk Codes R25 – Toxic if swallowed
R36/37/38 – Irritating to eyes, respiratory system and skin.
R20/21 – Harmful by inhalation and in contact with skin.
R23/24/25 – Toxic by inhalation, in contact with skin and if swallowed.
Safety Description S26 – In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S36/37/39 – Wear suitable protective clothing, gloves and eye/face protection.
S45 – In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)
UN IDs UN 2811 6.1/PG 3
WGK Germany 3
RTECS DW1760000
TSCA Yes
HS Code 29333999
Hazard Note Irritant
Hazard Class 6.1
Packing Group III
Toxicity LD50 orally in Rabbit: 172 mg/kg

 

4,4-Bipyridine(CAS#553-26-4) Introduction

Brief introduction 4,4′-Bipyridine is an organic compound. It is a colorless to white crystalline solid that is insoluble in water and has good solubility in organic solvents. 4,4′-Bipyridine has a variety of properties and uses. It is a strongly basic compound that reacts with acids to form salts. It is also a ligand that can form complexes with transition metals that play a role in catalytic reactions. 4,4′-Bipyridine also has luminescent properties and can be used in the preparation of fluorescent materials. In the preparation of 4,4′-bipyridine, a common method is synthesized by a condensation reaction of nitroaniline and aldehydes. p-nitroaniline is condensed with aldehydes under alkaline conditions to form an intermediate, which is subsequently purified by further reaction and crystallization to obtain a 4,4′-bipyridine product. Its dust can have an irritating effect on the eyes, skin and respiratory system, and direct contact should be avoided. Personal protective equipment such as protective gloves, goggles and masks should be worn when operating, and the operating environment should be well ventilated. 4,4′-Bipyridine is a flammable substance and should be kept away from fire sources and high temperatures. During storage and handling, the relevant safety regulations should be strictly observed.


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