二异丁烯

Description

diisobutylene · CAS 25167-70-8 · C8H16. UNII N69L73ADVF. Boiling Point: 101.4 °C; Boiling Point: 101 °C; Boiling Point: 101.4 °C @760 [mm Hg].

Identification

CAS Registry Number	25167-70-8
PubChem CID	7868
Molecular formula	C8H16
IUPAC name	2,4,4-trimethylpent-1-ene
UNII (FDA)	N69L73ADVF

Computed Descriptors

Molecular Weight	112.21
XLogP3	3.7
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	0
Rotatable Bond Count	2
Exact Mass	112.125200510
Monoisotopic Mass	112.125200510
Topological Polar Surface Area	0
Heavy Atom Count	8
Formal Charge	0

Physical & Chemical Properties

Boiling Point	101.4 °C
Boiling Point	101 °C
Boiling Point	101.4 °C @760 [mm Hg]
Melting Point	-93.5 °C
Melting Point	-93 °C
Flash Point	-5 °C
Flash Point	23 °F (-5 °C)
Density	0.7150 @ 20 °C/4 °C
Density	0.715 @ 20°C
Vapor Density	3.8 (AIR= 1)

Physical description & handling notes

• CBI; Liquid
• Colorless liquid with an odor of gasoline; [HSDB]
• COLOURLESS LIQUID WITH CHARACTERISTIC ODOUR.
• Colorless liquid
• GASOLINE-LIKE ODOR
• Insoluble in water. Soluble in ethyl ether, benzene, carbon tetrachloride

Regulatory Status

Regulatory & Food Contact	FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS
GHS notification summary	17.2% (66 / 384)

GHS Hazard Classification

GHS notification summary	17.2% (66 / 384)
Reported hazard statements	H225, H411, H304, H336, H400 (11.6%), H410 (74.2%)

Documented Uses

• Used in organic synthesis and in antioxidants, surfactants, lube additives, plasticizers, and rubber chemicals; Also used as a dispersant (co-monomer with maleic anhydride); [HSDB] Used in organic synthesis and to improve paper coatability; [AIHA]
• Pulp and Paper Processing [Category: Industry]
• CHEM INT FOR OCTYLPHENOL, OCTYLDIPHENYLAMINE USED AS RUBBER CHEM, TERT-OCTYLAMINE, & ISONONYL ALCOHOL; COMONOMER WITH MALEIC ANHYDRIDE USED AS DISPERSANT
• Organic synthesis; motor fuel synthesis, particularly isooctane; peroxide reactions
• Alkylation; intermediates; antioxidants, surfactants; lube additives; plasticizers; rubber chemicals. /Diisobutylene- including 2,4,4-trimethyl-1-pentene isomer/
• 2,4,4,-Trimethyl-1-pentene is a component of gasoline.

Synonyms

Diisobutylene; 2,4,4-TRIMETHYL-1-PENTENE; 107-39-1; 2,4,4-Trimethylpent-1-ene; 1-Pentene, 2,4,4-trimethyl-; 2,2,4-Trimethyl-4-pentene; 1-Methyl-1-neopentylethylene; NSC-8701; DTXSID4026765; 2,4,4-trimethylpentene-1; N69L73ADVF; NSC-73942; DTXCID806765; alpha-Diisobutylene; RefChem:908678; 2,4,4,-trimethyl-1-pentene

Frequently Asked Questions

What are the CAS number and molecular formula of diisobutylene?

CAS 25167-70-8; molecular formula C8H16; molecular weight — g/mol.

What other names is diisobutylene known by?

Diisobutylene, 2,4,4-TRIMETHYL-1-PENTENE, 107-39-1, 2,4,4-Trimethylpent-1-ene, 1-Pentene, 2,4,4-trimethyl-, 2,2,4-Trimethyl-4-pentene.

What is the regulatory status of diisobutylene?

Documented regulatory listings: FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS.

Is diisobutylene classified as hazardous?

17.2% of GHS notifications report no hazard classification (66 of 384).

What are the key physical properties of diisobutylene?

Boiling Point: 101.4 °C; Boiling Point: 101 °C; Boiling Point: 101.4 °C @760 [mm Hg]; Melting Point: -93.5 °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.