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110-52-1

Basic Information
CAS No.: 110-52-1
Name: 1,4-Dibromobutane
Article Data: 96
Cas Database
Molecular Structure:
Molecular Structure of 110-52-1 (1,4-Dibromobutane)
Formula: C4H8Br2
Molecular Weight: 215.916
Synonyms: 1,4-Dibrombutan;DBB;1,4 Dibromo Butane;1,4-Butylene Bromide;1,4-Dibromobutane / Tetramethylene Dibromide;1,4-Dibromobutene;Tetramethylene dibromide;Butane, 1,4-dibromo-;Butane,1,4-dibromo-;
EINECS: 203-775-5
Density: 1.785 g/cm3
Melting Point: - 20 °C(lit.)
Boiling Point: 197 °C at 760 mmHg
Flash Point: 65.2 °C
Solubility: immiscible with water.
Appearance: Clear, colorless liquid
Hazard Symbols: ToxicT,IrritantXi,CorrosiveC
Risk Codes: 25-37/38-41-36/37/38
Safety: 26-39-45-37/39
Transport Information: UN 2810 6.1/PG 3
PSA: 0.00000
LogP: 2.55640
Synthetic route
109-99-9

tetrahydrofuran

110-52-1

1,4-dibromo-butane

Conditions
ConditionsYield
With 1,2-dibromo-1,1,2,2-tetrachloroethane; triphenylphosphine In dichloromethane at 20℃; for 0.15h; Appel Halogenation;95%
With carbon tetrabromide; triphenylphosphine In chloroform at 20℃; for 240h;93%
With 2,2,2-tribromo-1,3,2-benzodioxaphosphole In chloroform86%
7051-34-5

cyclopropylcarbinyl bromide

110-52-1

1,4-dibromo-butane

Conditions
ConditionsYield
With water; boron tribromide In dichloromethane at 23℃; for 23h; regioselective reaction;87%
With hydrogen bromide at 170℃; im Rohr;
109-99-9

tetrahydrofuran

A

110-52-1

1,4-dibromo-butane

B

42023-34-7

4-bromobutyl phosphite

Conditions
ConditionsYield
With hydrogen bromide; phosphorus tribromide at 80℃; for 0.666667h;A 85%
B 4%
With hydrogen bromide; phosphorus tribromide at 80℃; for 0.666667h;A 27%
B 53%
110-63-4

Butane-1,4-diol

110-52-1

1,4-dibromo-butane

Conditions
ConditionsYield
With sulfuric acid; sodium bromide In water for 3h; Heating;84.8%
With hydrogen bromide at 130℃;
With sulfuric acid; hydrogen bromide
150-76-5

4-methoxy-phenol

A

110-52-1

1,4-dibromo-butane

B

2033-83-2

1-(4-methoxyphenoxy)-4-bromobutane

Conditions
ConditionsYield
A n/a
B 82%
873988-92-2

1,4-bis-isopentyloxy-butane

A

110-52-1

1,4-dibromo-butane

B

51748-48-2

1-bromo-4-isopentyloxy-butane

Conditions
ConditionsYield
With hydrogen bromide
2516-33-8

Cyclopropylmethanol

110-52-1

1,4-dibromo-butane

Conditions
ConditionsYield
With hydrogen bromide
1200-03-9

4-bromophenyl butyl ether

110-52-1

1,4-dibromo-butane

Conditions
ConditionsYield
With hydrogen bromide
3459-88-9

1,4-diphenoxybutane

110-52-1

1,4-dibromo-butane

Conditions
ConditionsYield
With hydrogen bromide
With hydrogen bromide at 130 - 140℃; im Rohr;
31991-78-3

uvariadiamide

110-52-1

1,4-dibromo-butane

Conditions
ConditionsYield
With phosphorus pentabromide
With bromine; phosphorus trichloride
With phosphorus pentabromide im Vakuum;
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    Product Name: 1,4-Dibromobutane CAS: 110-52-1 MF: C4H8Br2 MW: 215.91 EINECS: 203-775-5 Mol File: 110-52-1.mol 1,4-Dibromobutane Structure 1,4-Dibromobutane Chemical Properties Melting point -20 °C (lit.) Boiling point

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    1, 4-Dibromobutane CAS 110-52-1

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Specification

1. Introduction of 1,4-Dibromobutane
1,4-Dibromobutane is a kind of Pharmaceutical intermediates, it is also called Dibromobutane; tetramethylene bromide; Tetramethylene dibromide.

2. Properties of 1,4-Dibromobutane
Melting Point: - 20 °C(lit.)
Boiling Point: 197 °C at 760 mmHg
Flash Point: 65.2 °C
Solubility: immiscible with water.
Appearance: Clear, colorless liquid

3. Toxicity of 1,4-Dibromobutane

1.    

mmo-sat 10 µmol/plate

    MUREAV    Mutation Research. 141 (1984),11.
2.    

ipr-mus LD50:300 mg/kg

    ARZNAD    Arzneimittel-Forschung. Drug Research. 14 (1964),668.

4. Safety Information of 1,4-Dibromobutane
Hazard Codes :T,Xi,C (Toxic;Irritant;Corrosive)
Risk Statements :25-41-36/37/38 (Toxic if swallowed ;Risk of serious damage to eyes ;Irritating to eyes, respiratory system and skin )
Safety Statements :26-45-37/39 (In case of contact with eyes, rinse immediately with plenty of water and seek medical advice;In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) ;Wear suitable gloves and eye/face protection )
RIDADR :UN 2810 6.1/PG 3
WGK Germany : 2
RTECS : EJ7565000

6. Preparation of 1,4-Dibromobutane
1,4-Dibromobutane can be from THF via the open-loop, bromide derived. added hydrobromic acid,then add THF dropwise under stirring , and then dropping sulfuric acid,the temperature should be controlled at below 50 ℃. And then heated to 108 ℃ or so back 4h, after reaction continue stiring for 1h,when it is cold, take the subnatant,wash to neutral with soda solution, then add anhydrous calcium chloride for drying, filtration,then it is finished.

7. Use of 1,4-DIBROMOBUTANE
1,4-DIBROMOBUTANE can be used in organic intermediates.