丁二烯

Description

Butadiene · CAS 25339-57-5 · C4H6. UNII JSD5FGP5VD. Boiling Point: 24.1 °F at 760 mmHg (NTP, 1992); Boiling Point: -4.5 °C; Boiling Point: -4 °C.

Identification

CAS Registry Number	25339-57-5
PubChem CID	7845
Molecular formula	C4H6
IUPAC name	buta-1,3-diene
UNII (FDA)	JSD5FGP5VD

Computed Descriptors

Molecular Weight	54.09
XLogP3	2
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	0
Rotatable Bond Count	1
Exact Mass	54.0469501914
Monoisotopic Mass	54.0469501914
Topological Polar Surface Area	0
Heavy Atom Count	4
Formal Charge	0

Physical & Chemical Properties

Boiling Point	24.1 °F at 760 mmHg (NTP, 1992)
Boiling Point	-4.5 °C
Boiling Point	-4 °C
Boiling Point	24 °F
Boiling Point	-4.41 °C @760 [mm Hg]
Melting Point	-164 °F (NTP, 1992)
Melting Point	-108.966 °C
Melting Point	-108.9 °C
Melting Point	-109 °C
Melting Point	-164 °F

Physical description & handling notes

• Gas Vapor; Large Crystals; Liquid
• Colorless gas with a mild aromatic or gasoline-like odor. [Note: A liquid below 24 degrees F. Shipped as a liquefied compressed gas.] Vapor density = 1.87 (heavier than air); [HSDB]
• Liquid
• COLOURLESS COMPRESSED LIQUEFIED GAS WITH CHARACTERISTIC ODOUR.
• Colorless gas with a mild aromatic or gasoline-like odor.
• Colorless gas ... [Note: A liquid below 24 degrees F. Shipped as a liquefied compressed gas]

Regulatory Status

Regulatory & Food Contact	FDA Cumulative Estimated Daily Intake (CEDI): FCS FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS
GHS notification summary	0.1% (2 / 1783)

GHS Hazard Classification

GHS notification summary	0.1% (2 / 1783)
Reported hazard statements	H220, H340, H350, H280 (33.3%), H361 (24.7%), H412 (24.7%), H319, H335

Documented Uses

• 1,3-Butadiene is used in the production of rubber and plastics. It is also used in copolymers including acrylics.
• Used in the production of synthetic rubber for motor vehicle tires; also used in styrene-butadiene polymers, acrylonitrile-butadiene-styrene resins, and other compounds; [ACGIH] In a study of Swedish refinery workers, The exposure to 1,3-butadiene among all exposure groups was low (95% of all samples were below 10 ug/m3) in relation to the Swedish OEL, of 1000 ug/m3. [PMID 28578463]
• See Occupational Safety & Health Standard--29CFR1910.1051
• Plastic Composites Manufacturing [Category: Industry]
• Smoking cigarettes [Category: Food & Drugs]
• The majority of the butadiene produced worldwide is used as a monomer or co-monomer in the manufacture of synthetic rubber, above all for styrene - butadiene rubber and latex (SBR), polybutadiene rubber (BR), acrylonitrile - butadiene rubber and latex (NBR), and for chloroprene rubber (CR). Important plastics containing butadiene as a monomer component are impact-resistant polystyrene, a two-phase system consisting of polystyrene and polybutadiene; ABS polymers, consisting of acrylonitrile, butadiene, and styrene;

Synonyms

1,3-BUTADIENE; Buta-1,3-diene; 106-99-0; Divinyl; Biethylene; Vinylethylene; Bivinyl; Erythrene; Pyrrolylene; Butadieen; Butadien; Buta-1,3-dien; Buta-1,3-dieen; alpha,gamma-Butadiene; Butadiene monomer; NCI-C50602

Frequently Asked Questions

What are the CAS number and molecular formula of Butadiene?

CAS 25339-57-5; molecular formula C4H6; molecular weight — g/mol.

What other names is Butadiene known by?

1,3-BUTADIENE, Buta-1,3-diene, 106-99-0, Divinyl, Biethylene, Vinylethylene.

What is the regulatory status of Butadiene?

Documented regulatory listings: FDA Cumulative Estimated Daily Intake (CEDI): FCS; FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS.

Is Butadiene classified as hazardous?

0.1% of GHS notifications report no hazard classification (2 of 1783).

What are the key physical properties of Butadiene?

Boiling Point: 24.1 °F at 760 mmHg (NTP, 1992); Boiling Point: -4.5 °C; Boiling Point: -4 °C; Boiling Point: 24 °F.

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.