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Sigma-Aldrich

3,7-Dimethyl-1-octene

≥97.0% (GC)

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About This Item

Linear Formula:
(CH3)2CHCH2CH2CH2CH(CH3)CH=CH2
CAS Number:
Molecular Weight:
140.27
Beilstein:
1719870
EC Number:
MDL number:
UNSPSC Code:
12352100
PubChem Substance ID:
NACRES:
NA.22

Quality Level

Assay

≥97.0% (GC)

refractive index

n20/D 1.417

bp

154-156 °C (lit.)

density

0.733 g/mL at 20 °C (lit.)

storage temp.

2-8°C

SMILES string

CC(C)CCCC(C)C=C

InChI

1S/C10H20/c1-5-10(4)8-6-7-9(2)3/h5,9-10H,1,6-8H2,2-4H3

InChI key

KSXTZYRIJKDCEA-UHFFFAOYSA-N

General description

(R)-3,7-dimethyl-1-octene is an optically active alkyl-α-olefin. Its copolymerization with styrene, 1-vinylnaphthalene or 2-methylstyrene by Ziegler-Natta catalysts has been reported. Preparation of copolymers of racemic and optically active 3,7-dimethyl-1-octene with ethylene in the presence of Ziegler-Natta isospecific catalysts have been studied. Polymerization of (R,S)-3,7-dimethyl-1-octene in the presence of heterogeneous or homogeneous isotactic specific catalysts involves highly stereospecific insertion of (R,S)-3,7-dimethyl-1-octene into the metal-CH3 bond.

Pictograms

Flame

Signal Word

Warning

Hazard Statements

Hazard Classifications

Flam. Liq. 3

Storage Class Code

3 - Flammable liquids

WGK

WGK 3

Flash Point(F)

125.6 °F - closed cup

Flash Point(C)

52 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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13C-enriched end groups of poly (3, 7-dimethyl-1-octene) prepared in the presence of isotactic specific catalysts.
Longo P, et al.
Macromolecular Rapid Communications, 18(6), 491-495 (1997)
Stereoselective copolymerization of racemic a-olefins with ethylene by isospecific Ziegler-Natta catalyst.
Ciardelli F, et al.
Marine Chemistry, 175(3), 923-933 (1974)
Optically active hydrocarbon polymers with aromatic side chains, 7. Synthesis and properties of copolymers of vinyl aromatic monomers with chiral α-olefins.
Carlini C and Chiellini E.
Marine Chemistry, 176(3), 519-535 (1975)

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