反式1,3-戊二烯

Description

trans-1,3-Pentadiene · CAS 2004-70-8 · C5H8. UNII 00OA1GPF8R. Boiling Point: 109 °F at 760 mmHg (NFPA, 2010); Boiling Point: 42 °C; Melting Point: -222 °F (USCG, 1999).

Identification

CAS Registry Number	2004-70-8
PubChem CID	62204
Molecular formula	C5H8
IUPAC name	(3E)-penta-1,3-diene
UNII (FDA)	00OA1GPF8R

Computed Descriptors

Molecular Weight	68.12
XLogP3	2.4
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	0
Rotatable Bond Count	1
Exact Mass	68.062600255
Monoisotopic Mass	68.062600255
Topological Polar Surface Area	0
Heavy Atom Count	5
Formal Charge	0

Physical & Chemical Properties

Boiling Point	109 °F at 760 mmHg (NFPA, 2010)
Boiling Point	42 °C
Melting Point	-222 °F (USCG, 1999)
Melting Point	-87.5 °C
Melting Point	-87 °C
Flash Point	-20 °F (USCG, 1999)
Flash Point	-29 °C (CLOSED CUP)
Flash Point	-28 °C c.c.
Density	0.6760 @ 20 °C/4 °C
Density	0.6710 g/ml @ 25 °C

Physical description & handling notes

• 1,3-pentadiene appears as a clear colorless liquid with an acrid odor. A dangerous fire risk. Vapors are irritating to the eyes and respiratory system. Subject to polymerization if heated or contaminated. If the polymerization takes place inside a container, the container may violently rupture. Insoluble in water. Used to make intermediates and polymers.
• Liquid
• Colorless liquid; [Hawley]
• Colorless liquid; [HSDB] Unpleasant odor; [CHEMINFO]
• COLOURLESS LIQUID.
• Colorless liquid

Regulatory Status

GHS notification summary	5.1% (13 / 256)

GHS Hazard Classification

GHS notification summary	5.1% (13 / 256)
Reported hazard statements	H225 (94.9%), H304 (70.7%), H315 (90.3%), H319 (90.3%), H335 (90.3%)

Documented Uses

• Used as an intermediate and co-monomer in production of polymers and other organic chemicals; [Hawley]
• A product of combustion; Used to make polymers and other chemicals; [HSDB]
• /co-monomer in production of/ polymers, maleic anhydride adducts; intermediate.
• Polymers, maleic anhydride adducts; intermediate
• Not Known or Reasonably Ascertainable
• The methylation of butadiene with dimethyl sulfoxide in the presence of a base, such as potassium t-butoxide, produces 1,3-pentadiene (80% trans, 20% cis)

Synonyms

1,3-PENTADIENE; Piperylene; 504-60-9; 1-Methylbutadiene; FW963NF88B; 1-methyl-1,3-butadiene; DTXSID3027160; RefChem:906913; DTXCID00809454; 207-995-2; trans-1,3-Pentadiene; trans-Piperylene; 2004-70-8; (3E)-penta-1,3-diene; (E)-1,3-Pentadiene; 1,3-Pentadiene, (3E)-

Frequently Asked Questions

What are the CAS number and molecular formula of trans-1,3-Pentadiene?

CAS 2004-70-8; molecular formula C5H8; molecular weight — g/mol.

What other names is trans-1,3-Pentadiene known by?

1,3-PENTADIENE, Piperylene, 504-60-9, 1-Methylbutadiene, FW963NF88B, 1-methyl-1,3-butadiene.

Is trans-1,3-Pentadiene classified as hazardous?

5.1% of GHS notifications report no hazard classification (13 of 256).

What are the key physical properties of trans-1,3-Pentadiene?

Boiling Point: 109 °F at 760 mmHg (NFPA, 2010); Boiling Point: 42 °C; Melting Point: -222 °F (USCG, 1999); Melting Point: -87.5 °C.

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.