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Merck
CN

144991

1,7-Dibromoheptane

97%

Synonym(s):

Heptamethylene dibromide

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About This Item

Linear Formula:
Br(CH2)7Br
CAS Number:
4549-31-9
Molecular Weight:
257.99
UNSPSC Code:
12352100
NACRES:
NA.22
PubChem Substance ID:
24848695
EC Number:
224-910-4
Beilstein/REAXYS Number:
1734575
MDL number:
MFCD00000274

Key Documents

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Product Name

1,7-Dibromoheptane, 97%

InChI key

LVWSZGCVEZRFBT-UHFFFAOYSA-N

InChI

1S/C7H14Br2/c8-6-4-2-1-3-5-7-9/h1-7H2

SMILES string

BrCCCCCCCBr

assay

97%

form

liquid

refractive index

n20/D 1.503 (lit.)

bp

255 °C (lit.)

density

1.51 g/mL at 25 °C (lit.)

functional group

bromo

Quality Level

100

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Application

1,7-Dibromoheptane was used in the synthesis of random thermotropic liquid crystalline copolyether and ternary copolyether. It was also used in the synthesis of thermotropic liquid crystalline dendrimer exhibiting a nematic phase.

pictograms

Skull and crossbones
GHS06

signalword

Danger

hcodes

H300

Hazard Classifications

Acute Tox. 2 Oral

Storage Class

6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials

wgk

WGK 3

flash_point_f

235.4 °F - closed cup

flash_point_c

113 °C - closed cup

ppe

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

Regulatory Information

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Certificates of Analysis (COA)

Lot/Batch Number
MKBB7106V
69996KJV
MKBB7106
69996KJ
06923KH

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Functional polymers and sequential copolymers by phase transfer catalysis. 24. The influence of molecular weight on the thermotropic properties of a random copolyether based on 1, 5-dibromopentane, 1, 7-dibromoheptane, and 4, 4'-dihydroxy-a-methylstilbene.
Percec V, et al.
Journal of Polymer Science Part A: Polymer Chemistry, 25(7), 1943-1965 (1987)
Liquid crystalline polyethers based on conformational isomerism. 6. Influence of copolymer composition of a ternary copolyether based on 1-(4-hydroxyphenyl)-2-(2-methyl-4-hydroxyphenyl) ethane, 1, 5-dibromopentane, 1, 7-dibromoheptane, and 1, 9-dibromononane on its mesomorphic phase transitions.
Percec V and Tsuda Y.
Macromolecules, 23(1), 5-12 (1990)
Synthesis and characterization of a thermotropic nematic liquid crystalline dendrimeric polymer.
Percec V and Kawasumi M.
Macromolecules, 25(15), 3843-3850 (1992)
Yuan-Ping Pang et al.
PloS one, 4(2), e4349-e4349 (2009-02-06)
Aphids, among the most destructive insects to world agriculture, are mainly controlled by organophosphate insecticides that disable the catalytic serine residue of acetylcholinesterase (AChE). Because these agents also affect vertebrate AChEs, they are toxic to non-target species including humans and

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