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623-24-5

Basic Information
CAS No.: 623-24-5
Name: alpha,alpha'-Dibromo-p-xylene
Article Data: 75
Molecular Structure:
Molecular Structure of 623-24-5 (alpha,alpha'-Dibromo-p-xylene)
Formula: C8H8Br2
Molecular Weight: 263.96
Synonyms: p-Xylene, a,a'-dibromo- (6CI,7CI,8CI);1,4-Bis(bromomethyl)benzene;1,4-Di(bromomethyl)benzene;1,4-Xylylene dibromide;4-Bromomethylbenzylbromide;NSC 6226;p-Bis(bromomethyl)benzene;p-Di(bromomethyl)benzene;p-Xylylene bromide;p-Xylylene dibromide;a,a'-Dibromo-p-xylene;
EINECS: 210-781-1
Density: 1.778 g/cm3
Melting Point: 143-145 °C(lit.)
Boiling Point: 245 °C at 760 mmHg
Flash Point: 139.5 °C
Solubility: soluble, hydrolyses
Appearance: white to light yellow crystal powder
Hazard Symbols: CorrosiveC
Risk Codes: 34-22
Safety: 26-36/37/39-45
Transport Information: UN 3448 6.1/PG 2
PSA: 0.00000
LogP: 3.47640
Synthetic route
589-29-7

p-xylylene glycol

623-24-5

1,4-bis(bromomethyl)benzene

Conditions
ConditionsYield
With Silphos; bromine In acetonitrile for 0.166667h; Heating;97%
With hydrogen bromide bei der Destillation;
106-42-3

para-xylene

623-24-5

1,4-bis(bromomethyl)benzene

Conditions
ConditionsYield
With N-Bromosuccinimide; dibenzoyl peroxide In tetrachloromethane for 4h; Bromination; Heating;90%
With hydrogen bromide; sodium bromide In chloroform; water at 0 - 2℃; Electrolysis;90%
With hydrogen bromide; sodium bromide In chloroform; water at 15℃; Electrolysis;90%
623-27-8

terephthalaldehyde,

623-24-5

1,4-bis(bromomethyl)benzene

Conditions
ConditionsYield
With isopinocampheyl-boron dibromide dimethylsulfide complex In hexane at 20℃; for 5h; Reduction; bromination;81%
106-42-3

para-xylene

A

623-24-5

1,4-bis(bromomethyl)benzene

B

104-81-4

4-Methylbenzyl bromide

Conditions
ConditionsYield
With sodium bromate; sodium hydrogensulfite In water; ethyl acetate at 20℃; for 4h; Bromination;A 70%
B 6%
With N-Bromosuccinimide In water at 25℃; for 22h; Wohl-Ziegler bromination;A 3%
B 66%
With hydrogen bromide; dihydrogen peroxide In water at 20℃; Irradiation;A 10%
B 62%
100-10-7

4-dimethylamino-benzaldehyde

623-24-5

1,4-bis(bromomethyl)benzene

Conditions
ConditionsYield
With [2,5-Me2C6H3SO2N(Br)CH2]2; dibenzoyl peroxide In tetrachloromethane at 77℃; for 1.5h; Bromination;62%
50-00-0

formaldehyd

100-39-0

benzyl bromide

623-24-5

1,4-bis(bromomethyl)benzene

Conditions
ConditionsYield
With phosphoric acid; hydrogen bromide; acetic acid at 95 - 110℃; Einleiten von HBr;
50-00-0

formaldehyd

71-43-2

benzene

623-24-5

1,4-bis(bromomethyl)benzene

Conditions
ConditionsYield
With tetrachloromethane; hydrogen bromide; zinc dibromide
With hydrogen bromide; acetaldehyde
4497-29-4

bis(bromomethyl) ether

5435-44-9, 22243-66-9

(E)-3-Ureido-but-2-enoic acid ethyl ester

71-43-2

benzene

A

623-24-5

1,4-bis(bromomethyl)benzene

B

100-39-0

benzyl bromide

4497-29-4

bis(bromomethyl) ether

71-43-2

benzene

623-24-5

1,4-bis(bromomethyl)benzene

Conditions
ConditionsYield
With zinc(II) chloride
4497-29-4

bis(bromomethyl) ether

71-43-2

benzene

A

623-24-5

1,4-bis(bromomethyl)benzene

B

100-39-0

benzyl bromide

Conditions
ConditionsYield
With zinc(II) chloride
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  • 1,4-Bis(bromomethyl)benzene       CAS: 623-24-5

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    alpha,alpha'-Dibromo-p-xylene Chemical Properties Melting point 143-145 °C(lit.) Boiling point 245 °C(lit.) density 2.012 refractive index 1.614 Fp 155-158°C/14mm solubility dioxane: soluble1g/10 mL (hot) form

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  • 623-24-5      C8H8Br2    alpha,alpha'-Dibromo-p-xylene

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  • 1,4-bis(bromomethyl)benzen cas no. 623-24-5 98%

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  • 1,4-bis(Bromomethyl)benzene 1,4-bis(Bromomethyl)benzene

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  • Alpha,Alpha'-Dibromo-p-xylene

  • Casno:

    623-24-5

    Alpha,Alpha'-Dibromo-p-xylene

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Chemistry

IUPAC Name: 1,4-bis(Bromomethyl)benzene  
Synonyms of alpha,alpha'-Dibromo-p-xylene (CAS NO.623-24-5): 1,4-Bis(Bromomethyl)benzene ; p-Xylylene dibromide
CAS NO: 623-24-5
Molecular Formula: C8H8Br2
Molecular Weight: 263.96
Molecular Structure:
EINECS: 210-781-1
H bond acceptors: 0
H bond donors: 0
Freely Rotating Bonds: 2
Polar Surface Area: Å2
Index of Refraction: 1.611
Molar Refractivity: 51.54 cm3
Molar Volume: 148.4 cm3
Surface Tension: 45.3 dyne/cm
Density: 1.778 g/cm3
Flash Point: 139.5 °C
Enthalpy of Vaporization: 46.25 kJ/mol
Boiling Point: 245 °C at 760 mmHg
Vapour Pressure: 0.046 mmHg at 25°C 
Melting Point: 143-145 °C(lit.)
Water Solubility: soluble, hydrolyses
Sensitive: Lachrymatory
Appearance: white to light yellow crystal powder
Product Categories of alpha,alpha'-Dibromo-p-xylene (CAS NO.623-24-5): Aromatic Halides (substituted)

Safety Profile

Safety Information about alpha,alpha'-Dibromo-p-xylene (CAS NO.623-24-5):
Hazard Codes: CorrosiveC
Risk Statements: 34-22 
R34: Causes burns. 
R22: Harmful if swallowed.
Safety Statements: 26-36/37/39-45 
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.)
RIDADR: UN 3448 6.1/PG 2
WGK Germany: 3
F: 8-19-21
Hazard Note: Corrosive/Lachrymatory
HazardClass: 8
PackingGroup: III