144991
1,7-Dibromoheptane
97%
Synonym(s):
Heptamethylene dibromide
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About This Item
Linear Formula:
Br(CH2)7Br
CAS Number:
Molecular Weight:
257.99
Beilstein:
1734575
EC Number:
MDL number:
UNSPSC Code:
12352100
PubChem Substance ID:
NACRES:
NA.22
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Quality Level
Assay
97%
form
liquid
refractive index
n20/D 1.503 (lit.)
bp
255 °C (lit.)
density
1.51 g/mL at 25 °C (lit.)
SMILES string
BrCCCCCCCBr
InChI
1S/C7H14Br2/c8-6-4-2-1-3-5-7-9/h1-7H2
InChI key
LVWSZGCVEZRFBT-UHFFFAOYSA-N
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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.
Signal Word
Danger
Hazard Statements
Precautionary Statements
Hazard Classifications
Acute Tox. 2 Oral
Storage Class Code
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
Personal Protective Equipment
dust mask type N95 (US), Eyeshields, Gloves
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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)
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