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2-Methyl-2-butene

2-Methyl-2-butene structure

CAS No.: 513-35-9

Chemical Name:: 2-Methyl-2-butene

Synonyms: 2-Methylbut-2-ene;PENTENE;ISOAMYLENE;AMYLENE;3-Methyl-2-butene;N-AMYLENE;2-Mdethyl-2-butene;Isoamylenes;b-Isoamylene;Methyl butene

CBNumber:: CB6853712

Molecular Formula:: C5H10

Molecular Weight:: 70.13

MDL Number:: MFCD00009276

MOL File:: 513-35-9.mol

MSDS File:: SDS

Last updated:2026-01-13 11:24:29

Product description	Number	Pack Size	Price
2-Methyl-2-butene ≥95.0% (GC)	86262	50mL	$52.2
2-Methyl-2-butene ≥95.0% (GC)	86262	250ML	$117
2-Methyl-2-butene ≥95.0% (GC)	86262	1L	$371
2-Methyl-2-butene technical grade, 90%	379263	800ml	$379
2-Methyl-2-butene solution 2.0 M in THF	304042	100ml	$70.1
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2-Methyl-2-butene Properties

Melting point	-134 °C (lit.)
Boiling point	35-38 °C (lit.)
Density	0.662 g/mL at 25 °C (lit.)
vapor density	2.4 (vs air)
vapor pressure	25.7 psi ( 55 °C)
refractive index	n20/D 1.385(lit.)
RTECS	EM7580000
Flash point	−4 °F
storage temp.	2-8°C
solubility	Chloroform, Methanol (Slightly)
form	Liquid
color	Colorless
explosive limit	8.7%
Water Solubility	Miscible with alcohol, benzene, ligroin, ethylene oxide and ether. Immiscible with water.
Merck	14,607
BRN	1361353
Dielectric constant	2.1（20℃）
Stability	Volatile
InChI	1S/C5H10/c1-4-5(2)3/h4H,1-3H3
InChIKey	BKOOMYPCSUNDGP-UHFFFAOYSA-N
SMILES	C\C=C(\C)C
LogP	2.67
CAS DataBase Reference	513-35-9(CAS DataBase Reference)
EWG's Food Scores	1
FDA UNII	HR68LQ4T3X
NIST Chemistry Reference	2-Butene, 2-methyl-(513-35-9)
EPA Substance Registry System	2-Methyl-2-butene (513-35-9)
UNSPSC Code	41116107
NACRES	NA.24

SAFETY

Risk and Safety Statements

Symbol(GHS)

GHS02,GHS07,GHS08,GHS09

Signal word

Danger

Hazard statements

H224-H302-H304-H336-H341-H411

Precautionary statements

P201-P210-P273-P301+P310+P331-P308+P313-P403+P233

target organs

Central nervous system

PPE

Eyeshields, Faceshields, Gloves

Hazard Codes

F,Xn,N,F+

Risk Statements

11-22-65-51/53-12-36/37/38-19-68-67-38-52/53-40-36/37

Safety Statements

45-9-61-33-16-36/37/39-26-62-36/37

RIDADR

UN 2460 3/PG 2

WGK Germany

TSCA

TSCA listed

HazardClass

PackingGroup

HS Code

29012900

Storage Class

3 - Flammable liquids

Hazard Classifications

Acute Tox. 4 Oral
Aquatic Chronic 2
Asp. Tox. 1
Flam. Liq. 1
Muta. 2
STOT SE 3

Hazardous Substances Data

513-35-9(Hazardous Substances Data)

Limited Quantities

1.0 L (0.3 gallon) (liquid)

Excepted Quantities

Max Inner Pack (30g or 30ml) and Max Outer Pack (500g or 500ml)

NFPA 704

	3
1		0

2-Methyl-2-butene price More Price(31)

Manufacturer	Product number	Product description	CAS number	Packaging	Price	Updated	Buy
Sigma-Aldrich	86262	2-Methyl-2-butene ≥95.0% (GC)	513-35-9	50mL	$52.2	2025-07-31	Buy
Sigma-Aldrich	86262	2-Methyl-2-butene ≥95.0% (GC)	513-35-9	250ML	$117	2025-07-31	Buy
Sigma-Aldrich	86262	2-Methyl-2-butene ≥95.0% (GC)	513-35-9	1L	$371	2025-07-31	Buy
Sigma-Aldrich	379263	2-Methyl-2-butene technical grade, 90%	513-35-9	800ml	$379	2025-07-31	Buy
Sigma-Aldrich	304042	2-Methyl-2-butene solution 2.0 M in THF	513-35-9	100ml	$70.1	2023-01-07	Buy

Product number	Packaging	Price	Buy
86262	50mL	$52.2	Buy
86262	250ML	$117	Buy
86262	1L	$371	Buy
379263	800ml	$379	Buy
304042	100ml	$70.1	Buy

2-Methyl-2-butene Chemical Properties,Uses,Production

Description

2-Methyl-2-butene (also named as Amylene) is an alkene hydrocarbon with the molecular formula C5H10. It is a colorless to pale yellow clear liquid. It can be used as a free radical scavenger in trichloromethane and dichloromethane. It was used for the alkylation of 3-methylthiophene over a zeolitic catalyst. It was also used as a precursor of peroxyacetyl nitrate for calibration purpose.

Chemical Properties

2-Methyl-2-butene is a colorless volatile liquid with unpleasant odour (detection limit ca. 2 ppt) . soluble in alcohol, ether, benzene, insoluble in water. It is used in organic synthesis, hydrogenation, halogenation, alkylation, condensation reactions.

Uses

2-Methyl-2-butene is used to prepare 3-Brom-2.3-dimethyl-1.1-dicyan-butan in the presence of 2,2'-azobis-(2,4-dimethyl-4-methoxyvaleronitrile) as a catalyst. It may be employed as precursor for peroxyacetyl nitrate for the calibration purposes.

Definition

ChEBI: 2-Methyl-2-butene is an alkene that is ethylene in which three of the hydrogens are replaced by methyl groups.

Preparation

2-methyl-2-butene is prepared by dehydration of tert-amyl alcohol in presence of p-toluenesulfonic acid or distillation of a catalytically cracked gasoline stream, followed by extraction with aqueous sulfuric acid at low temp.

General Description

2-methyl-2-butene appears as a clear colorless liquid with a petroleum-like odor. Less dense than water and insoluble in water. Hence floats on water. Vapors heavier than air.

Air & Water Reactions

Highly flammable. Insoluble in water.

Reactivity Profile

2-Methyl-2-butene may react vigorously with strong oxidizing agents. May react exothermically with reducing agents to release gaseous hydrogen. In the presence of various catalysts (such as acids) or initiators, may undergo exothermic polymerization reactions.

Hazard

Highly flammable, dangerous fire and explosion risk.

Health Hazard

Inhalation or contact with material may irritate or burn skin and eyes. Fire may produce irritating, corrosive and/or toxic gases. Vapors may cause dizziness or suffocation. Runoff from fire control or dilution water may cause pollution.

Purification Methods

Distil amylene and collect the distillate at low temperature. It has also been distilled from sodium. FLAMMABLE. It is available in steel cylinders and has a short

Research

2-Methyl-2-butene is a trisubstituted olefin. It acts as guest and forms stable solid host-guest complexes with self-assembled benzophenone bis-urea macrocycles. The impact of active chlorine on photo-oxidation of 2-methyl-2-butene was studied. Photosensitized oxidation of 2-methyl-2-butene adsorbed on internal framework of Na-ZSM-5 zeolite was studied. Gas-phase reaction of 2-methyl-2-butene with ozone has been investigated. Kinetics of liquid-phase alkylation of 3-methylthiophene with 2-methyl-2-butene on supported phosphoric acid has been reported.

Toxics Screening Level

The initial threshold screening level (ITSL) for amylene (also called 2-methyl-2-butene) is 106 μg/m3 (annual averaging time).

References

Virginie Bellière, Christophe Geantet, Michel Vrinat, Younès Ben-Taarit, Yuji Yoshimura, Alkylation of 3-Methylthiophene with 2-Methyl-2-butene over a Zeolitic Catalyst, Energy & Fuels, 2004, vol. 18, pp. 1806-1813
D. Grosjean, Gas-phase reaction of ozone with 2-methyl-2-butene: dicarbonyl formation from Criegee biradicals, Environmental Science & Technology, 1990, vol. 24, pp. 1428-1432

2-Methyl-2-butene synthesis

Synthesis of 2-Methyl-2-butene from 3-METHYL-1-BUTYNE

2-Methyl-2-butene Preparation Products And Raw materials

Raw materials

3-Methyl-1-butene C5 Fraction Isoprene p-tert-amyl aniline 3,3-Dimethylcyclobutene

1,1-dimethylcyclobutane 1,2,4-Trimethylbenzene 2-Butene 2-METHYL-1-BUTENE CIS-1,3-PENTADIENE

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Preparation Products

β-Carotene N,N-DiMethylMethyleneaMMoniuM Iodide Triadimefon pinacolone，tert-butyl methy1 ketone，3，3-dimethyl-2-butyl ketone 2,2-Dimethylbutyric acid

CIS-3,4-DIMETHYL-2-PENTENE 3,4,4-TRIMETHYLCYCLOPENT-2-ENONE 1,1,2,3,3-pentamethylindan 3-ETHYL-2-PENTENE 2-METHYL-2-PENTENE

2-METHYL-2-BUTANETHIOL

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2-Methyl-2-butene Suppliers

Global( 216)Suppliers

Supplier	Tel	Email	Country	ProdList	Advantage
Shandong Quark Chemical Co., Ltd.	+8613325218432	sales@quarkchem.com	China	57	58
Hebei Yanxi Chemical Co., Ltd.	+8618531123677	faithe@yan-xi.com	China	5853	58
Henan Fengda Chemical Co., Ltd	+86-371-86557731 +86-13613820652	info@fdachem.com	China	20128	58
Capot Chemical Co.,Ltd.	+86-（0）57185586718; +8613336195806	sales@capot.com	China	29735	60
Henan Tianfu Chemical Co.,Ltd.	+86-0371-55170693 +86-19937530512	info@tianfuchem.com	China	21597	55
Shanghai Time Chemicals CO., Ltd.	+86-021-57951555 +8617317452075	jack.li@time-chemicals.com	China	1803	55
Hubei xin bonus chemical co. LTD	86-13657291602	linda@hubeijusheng.com	CHINA	22963	58
CONIER CHEM AND PHARMA LIMITED	+8618523575427	sales@conier.com	China	49977	58
career henan chemical co	+86-0371-86658258 +8613203830695	factory@coreychem.com	China	29795	58
Jinan Liheng Biotechnology Co., Ltd.	15865262812	info@lihengpharm.com	CHINA	938	58

Supplier	Advantage
Shandong Quark Chemical Co., Ltd.	58
Hebei Yanxi Chemical Co., Ltd.	58
Henan Fengda Chemical Co., Ltd	58
Capot Chemical Co.,Ltd.	60
Henan Tianfu Chemical Co.,Ltd.	55
Shanghai Time Chemicals CO., Ltd.	55
Hubei xin bonus chemical co. LTD	58
CONIER CHEM AND PHARMA LIMITED	58
career henan chemical co	58
Jinan Liheng Biotechnology Co., Ltd.	58

View Lastest Price from 2-Methyl-2-butene manufacturers

Update time	Product	Price	Min. Order	Purity	Supply Ability	Manufacturer
2025-09-25	2-Methyl-2-butene 513-35-9	US $100.00-1.00 / KG	1KG	99%	g-kg-tons, free sample is available	Henan Fengda Chemical Co., Ltd
2025-06-27	2-Methyl-2-butene 513-35-9	US $0.00-0.00 / KG	1KG	99%	500000kg	Hebei Chuanghai Biotechnology Co., Ltd
2025-06-20	2-Methyl-2-butene 513-35-9	US $20.00-1.00 / kg	1kg	0.99	20 tons	Hebei Yanxi Chemical Co., Ltd.

2-Methyl-2-butene
513-35-9
US $100.00-1.00 / KG
99%
Henan Fengda Chemical Co., Ltd

2-Methyl-2-butene
513-35-9
US $0.00-0.00 / KG
99%
Hebei Chuanghai Biotechnology Co., Ltd

2-Methyl-2-butene
513-35-9
US $20.00-1.00 / kg
0.99
Hebei Yanxi Chemical Co., Ltd.

2-Methyl-2-butene Spectrum

2-Methyl-2-butene(513-35-9)MS 2-Methyl-2-butene(513-35-9)¹HNMR 2-Methyl-2-butene(513-35-9)¹³CNMR 2-Methyl-2-butene(513-35-9)IR1 2-Methyl-2-butene(513-35-9)IR2 2-Methyl-2-butene(513-35-9)Raman

513-35-9(2-Methyl-2-butene)Related Search:

Isovaleric acid 3,3-Dimethylacrylic acid Maleic acid Fumaric acid 2-Methyl-2-butanol

3-Methyl-1-butanol Bensulfuron methyl Methyl acrylate 3-SULFOLENE Methylparaben

Amytal sodium ISOAMYL NITRATE Isoamyl nitrite ISOVALERIC ANHYDRIDE Methyl acetate

Cyclopentene Thiophanate-methyl Maleic anhydride Methyl Butene

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2-METHYLBUTENE-2 N-AMYLENE PENTENE 2-Mdethyl-2-butene 2-methyl-2-buten 2-Methylbut-2-ene 3-Methyl-2-butene alpha,eta-amylene Ethylene, trimethyl- Methyl butene trimethyl-ethylen trimethylethylene[qr] 2-METHYL-2-BUTENE AMYLENE BETA-ISOAMYLENE ISOAMYLENE TRIMETHYLETHYLENE 2-methyl-2-butylene METHYLBUTENES 2-METHYL-2-BUTENE, 2.0M SOLUTION IN TETR AHYDROFURAN 2-METHYL-2-BUTENE, TECH., 90% 2-METHYL-2-BUTENE, STANDARD FOR GC 2-Methyl-2-butene, =99%, purified by redistillation 2-Methyl-2-butene,86% BETA-ISOPENTENE Isoamylenes 2-METHYL-2-BUTENE MIN 88% 2-Methyl-2-butene, 99+% 2-Methyl-2-butene, balance 2-Methyl-1-butene, 90% Androstenedoine 2-methyl-2-butene solution 2-METHYL-2-BUTENE 95+% β-Isoamylene, Amylene b-Isoamylene 2-Methyl-2-butene, 90%, balance 2-methyl-1-butene 2-Methylbutane-2-ene 2-Methyl-2-butene, tech. 90%, remainder mainly 2-methyl-1-butene 2-Methyl-2-butene,2M solution in THF 2-Methyl-2-butene,β-Isoamylene, Amylene 2-Methyl-2-butene, 2M solution in THF, AcroSeal 2-Methyl-2-butene, 99+% 25ML Amylene Pentene 2-Methyl-2-butene >=95.0% (GC) 2-Methyl-2-butene solution 2.0 M in THF 2-Methyl-2-butene, technical, 90%, remainder mainly 2-methyl-1-butene (CH3)2C=CHCH3 1,1,2-Trimethylethylene 2-Butene,2-methyl- 2-Methyl-2-butene technical grade, 90% 2-Methyl-2-butene > 2-Methyl-2-butene ISO 9001：2015 REACH Isoamylene (IAE) 2-Methyl-2-butene, 2M solution in THF, AcroSeal&trade 2-Methyl-2-butene,90% 2-mmethyl-2-butene 2methy-2-lbutene 513-35-9 513359