1,4-Dibromobenzene

CAS NO.：106-37-6
Empirical Formula: C6H4Br2
Molecular Weight: 235.9
MDL number: MFCD00000089
EINECS: 203-390-2
SAFETY DATA SHEET (SDS)
Update Date: 2024-11-21 17:11:28

What is 1,4-Dibromobenzene?

Chemical properties

1,4-dibromobenzene is a dibromobenzene. It is a white or off-white powder. freely soluble in hot ethanol, acetone, ether and hot benzene, soluble in ethanol and benzene, insoluble in water. It has a strong smell similar to that of the lighter chlorine analogue. It can be used as a precursor to the dye 6,6-Dibromoindigo.

Chemical properties

Dibromobenzene is a heavy colorless liquid. Pleasant aromatic odor.

The Uses of 1,4-Dibromobenzene

1,4-Dibromobenzene is used in the synthesis of 2,5-dibromoacetophenone, triarylamines and trans- stilbenes. It is widely used as a heavy liquid solvent as well as a motor oil additive. It finds application as an intermediate in the manufacture of organic chemicals such as dyes, pharmaceuticals and flame retardants for polymeric materials.

The Uses of 1,4-Dibromobenzene

Solvent for oils; ore flotation; motor fuels; organic synthesis.

What are the applications of Application

1,4-Dibromobenzene is a starting material for aryl Grignard reactions

Definition

ChEBI: 1,4-dibromobenzene is a dibromobenzene.

Potential Exposure

Dibromobenzene is used as a solvent for oils and in organic synthesis.

Shipping

UN1993 Flammable liquids, n.o.s., Hazard Class: 3; Labels: 3-Flammable liquid, Technical Name Required. UN2514 Bromobenzene, Hazard Class: 3; Labels: 3-Flammable liquid.

Purification Methods

Steam distil the dibromobenzene , then crystallise it from EtOH or MeOH and dry it in the dark under vacuum. Purify it by zone melting. [Beilstein 5 IV 683.]

Incompatibilities

Extremely flammable. May form explosive mixture with air. Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, and epoxides.

Waste Disposal

Use a licensed professional waste disposal service to dispose of this material. All federal, state, and local environmental regulations must be observed. Consult with environmental regulatory agencies for guidance on acceptable disposal practices. Incineration with flue gas scrubbing.

Properties of 1,4-Dibromobenzene

Melting point:	83-87 °C (lit.)
Boiling point:	219 °C (lit.)
Density	1.841 g/mL at 25 °C (lit.)
vapor pressure	0.134 at 35 °C (Hine et al., 1963)
refractive index	1.5742
Flash point:	219-220°C
storage temp.	Inert atmosphere,Room Temperature
solubility	Soluble in alcohol, benzene, chloroform, toluene and carbon tetrachloride. Insoluble in ether.
form	Crystals
color	Colorless to almost white
Water Solubility	practically insoluble
λmax	282nm(EtOH)(lit.)
Merck	14,3019
BRN	1904543
Henry's Law Constant	5.0 x 10^-4 atm?m³/mol at 25 °C (Hine and Mookerjee, 1975)
Dielectric constant	8.8（20℃）
Stability:	Stable. Combustible. Incompatible with strong oxidizing agents.
CAS DataBase Reference	106-37-6(CAS DataBase Reference)
NIST Chemistry Reference	Benzene, 1,4-dibromo-(106-37-6)
EPA Substance Registry System	p-Dibromobenzene (106-37-6)

Safety information for 1,4-Dibromobenzene

Signal word	Warning
Pictogram(s)	Exclamation Mark Irritant GHS07 Environment GHS09
GHS Hazard Statements	H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation H411:Hazardous to the aquatic environment, long-term hazard
Precautionary Statement Codes	P273:Avoid release to the environment. P302+P352:IF ON SKIN: wash with plenty of soap and water. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.