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443743

Sigma-Aldrich

4-Bromo-1,1,2-trifluoro-1-butene

97%

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Linear Formula:
BrCH2CH2CF=CF2
CAS Number:
Molecular Weight:
188.97
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.22

Quality Level

assay

97%

form

liquid

refractive index

n20/D 1.401 (lit.)

bp

95-98 °C (lit.)

density

1.639 g/mL at 25 °C (lit.)

SMILES string

F\C(F)=C(/F)CCBr

InChI

1S/C4H4BrF3/c5-2-1-3(6)4(7)8/h1-2H2

InChI key

GQCQMFYIFUDARF-UHFFFAOYSA-N

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1 of 4

This Item
167851407771195707
vibrant-m

443743

4-Bromo-1,1,2-trifluoro-1-butene

vibrant-m

167851

4-Bromo-1-butene

vibrant-m

195707

cis-1,4-Dichloro-2-butene

Quality Level

100

Quality Level

200

Quality Level

200

Quality Level

200

bp

95-98 °C (lit.)

bp

98-100 °C (lit.)

bp

51-53 °C/12 mmHg (lit.)

bp

152 °C/758 mmHg (lit.)

form

liquid

form

liquid

form

liquid

form

liquid

refractive index

n20/D 1.401 (lit.)

refractive index

n20/D 1.462 (lit.)

refractive index

n20/D 1.406 (lit.)

refractive index

n20/D 1.489 (lit.)

density

1.639 g/mL at 25 °C (lit.)

density

1.33 g/mL at 25 °C (lit.)

density

1.18 g/mL at 25 °C (lit.)

density

1.188 g/mL at 25 °C (lit.)

General description

4-Bromo-1,1,2-trifluoro-1-butene is a fluorinated building block. It reacts with potassium hydroxide in the presence of tetrabutylammonium bromide (a phase transfer catalyst) to afford 1,1,2-trifluoro-1,3-butadiene.

Application

4-Bromo-1,1,2-trifluoro-1-butene may be used in the preparation of 1,1,2-trifluoro-1-butene, via reaction with KOH in the presence of phase-transfer catalyst, tetrabutylammonium bromide.

pictograms

FlameExclamation mark

signalword

Danger

Hazard Classifications

Acute Tox. 4 Oral - Eye Irrit. 2 - Flam. Liq. 2 - STOT SE 3

target_organs

Respiratory system

Storage Class

3 - Flammable liquids

wgk_germany

WGK 3

flash_point_f

62.6 °F - closed cup

flash_point_c

17 °C - closed cup

ppe

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter


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1, 1, 2-Trifluoro-1, 3-butadiene: a convenient C4 intermediate for functionalized monofluoroolefins.
Matsuo N and Kende AS.
The Journal of Organic Chemistry, 53(10), 2304-2308 (1988)

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