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Description

heptene · CAS 25339-56-4 · C7H14. UNII O748KJ11V7. Boiling Point: 200.5 °F at 760 mmHg (USCG, 1999); Boiling Point: 93.6 °C; Boiling Point: 93.6 °C @760 [mm Hg].

Identification

CAS Registry Number	25339-56-4
PubChem CID	11610
Molecular formula	C7H14
IUPAC name	hept-1-ene
UNII (FDA)	O748KJ11V7

Computed Descriptors

Molecular Weight	98.19
XLogP3	4
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	0
Rotatable Bond Count	4
Exact Mass	98.109550447
Monoisotopic Mass	98.109550447
Topological Polar Surface Area	0
Heavy Atom Count	7
Formal Charge	0

Physical & Chemical Properties

Boiling Point	200.5 °F at 760 mmHg (USCG, 1999)
Boiling Point	93.6 °C
Boiling Point	93.6 °C @760 [mm Hg]
Melting Point	-182 °F (USCG, 1999)
Melting Point	-119.7 °C
Melting Point	-10 °C
Flash Point	25 °F (USCG, 1999)
Solubility	In water, 18.2 mg/l @ 25 °C
Density	0.6970 @ 20 °C/4 °C
Density	0.6969 @ 20°C

Physical description & handling notes

• N-heptene appears as a colorless liquid. Insoluble in water and much less dense than water. Vapors heavier than air. Used to make other chemicals.
• Liquid
• Colorless liquid; [HSDB]
• Colorless liquid; [CAMEO] Distinct odor; [Matheson Tri-Gas MSDS]
• Colorless liquid
• LESS THAN 32 °F (CLOSED CUP)

GHS Hazard Classification

Reported hazard statements	H225 (100%), H304 (100%), H400 (100%), H410 (100%), H315 (68.2%), H319 (68.2%), H335 (13.6%), H320

Documented Uses

• Used in the organic synthesis of flavors, perfumes, pharmaceuticals, dyes, oils, and resins; [HSDB]
• Used to make other chemicals; [CAMEO] Manufactured and used strictly as component of C6-C8 distillation cut; [IUCLID] Typical uses for C6-C8 olefins include intermediates for low-molecular weight fatty acids and mercaptans; Uses for C6-C10 olefins include intermediates for plasticizer alcohols and surfactants; [OECD SIDS: Higher Olefins - 2004]
• The One-Step Ziegler Process involves the oligomerization of ethylene in the presence of trialkylaluminum at 180-220 °C and 140 atm.
• The Two-Step Ziegler Process involves the oligomerization of ethylene in the presence of aluminum alkyls at 175-200 °C and 136-204 atm. Chain growth continues with the reaction of light olefins with the aluminum alkyls continuously fed in stoichiometric amounts.
• High purity ethylene contacts a nickel catalyst in a butanediol reaction medium. The alpha-olefins produced, separate from the solvent because they are insoluble in the polar medium.
• Alpha-olefins of C4, C6-C15 and >C20 are by-products of oligomerization reactions.

Synonyms

1-HEPTENE; Hept-1-ene; HEPTENE; n-Heptene; NSC 74130; HSDB 1078; EINECS 209-767-8; .alpha.-Heptylene; UN2278; UNII-O748KJ11V7; O748KJ11V7; EINECS 246-871-2; NSC-74130; 25339-56-4; 1-HEPTENE [HSDB]; 1-C7H14

Frequently Asked Questions

What are the CAS number and molecular formula of heptene?

CAS 25339-56-4; molecular formula C7H14; molecular weight — g/mol.

What other names is heptene known by?

1-HEPTENE, Hept-1-ene, HEPTENE, n-Heptene, NSC 74130, HSDB 1078.

Is heptene classified as hazardous?

Hazard statements reported: H225, H304, H400, H410, H315.

What are the key physical properties of heptene?

Boiling Point: 200.5 °F at 760 mmHg (USCG, 1999); Boiling Point: 93.6 °C; Boiling Point: 93.6 °C @760 [mm Hg]; Melting Point: -182 °F (USCG, 1999).

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.