Polyether_Polyether Polyol Knowledge 2-bromochlorobenzene

2-bromochlorobenzene

2-bromochlorobenzene structural formula

Structural formula

Business number 07AB
Molecular formula C6H4BrCl
Molecular weight 191.45
label

2-Chloro-1-bromobenzene,

o-chlorobromobenzene,

o-bromochlorobenzene,

2-Bromochlorobenzene,

o-Bromochlorobenzene,

BrC6H4Cl,

organic synthesis intermediates,

Multifunctional solvents,

aromatic compounds

Numbering system

CAS number:694-80-4

MDL number:MFCD00000532

EINECS number:211-775-1

RTECS number:None

BRN number:1855303

PubChem number:24891892

Physical property data

1. Properties: colorless liquid.

2. Density (g/mL, 25/4℃): 1.6382

3. Melting point (ºC): -12.3

4. Boiling point (ºC , 101.3kPa): 204

5. Refractive index (20ºC): 1.5804

6. Flash point (ºC): 79

7. Solubility: Easily soluble in benzene, insoluble in water.

Toxicological data

Harmful by inhalation or oral administration, irritating to eyes, skin and mucous membranes, avoid inhalation of vapor.

Ecological data

Generally not hazardous to water, do not discharge material into the surrounding environment without government permission.

Molecular structure data

1. Molar refractive index: 38.83

2. Molar volume (cm3/mol): 117.5

3. Isotonic specific volume (90.2K): 293.6

4. Surface tension (dyne/cm): 38.9

5. Dielectric constant:

6. Dipole moment (10-24 cm3):

7. Polarizability: 15.39

Compute chemical data

1. Reference value for hydrophobic parameter calculation (XlogP): 3.2

2. Number of hydrogen bond donors: 0

3. Number of hydrogen bond acceptors: 0

4. Number of rotatable chemical bonds: 0

5. Number of tautomers: None

6. Topological molecule polar surface area 0

7. Number of heavy atoms: 8

8. Surface charge: 0

9. Complexity: 74.9

10. Number of isotope atoms: 0

11. Determine the number of atomic stereocenters: 0

12. Uncertain number of atomic stereocenters: 0

13. Determine the number of chemical bond stereocenters: 0

14. Number of uncertain chemical bond stereocenters: 0

15. Number of covalent bond units: 1

Properties and stability

Keep away from oxides.

Storage method

Store in a sealed containerInside, and place in a cool, dry place. Store away from oxidizing agents.

Synthesis method

It is obtained by diazotization of o-chloroaniline and then reacting with copper bromide. Mix o-chloroaniline and 48% hydrobromic acid, add ice to cool down to 0°C, quickly add sodium nitrite aqueous solution while stirring, and add crushed ice to keep the temperature below 10°C. Then the mixture of cuprous chloride and hydrobromic acid is heated to boiling and diazo liquid is added. Control the adding speed of diazo liquid and keep the reaction at boiling. After adding the diazo liquid, the product is evaporated with water vapor, and the organic phase (lower liquid) is separated from the distillate, washed with concentrated sulfuric acid, washed with water, washed with 5% sodium hydroxide solution, and then dried with calcium chloride After distillation, the 199-201℃ (98.4kPa) fraction is collected as the finished product.

Purpose

Used as organic synthesis intermediates and solvents.

Resource:allhdi.com

This article is from the Internet, does not represent the position of Toluene diisocyanate reproduced please specify the source.https://www.polyether-factory.com/archives/20822

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