2-butene

Modify Date: 2025-08-22 09:39:18

2-butene structure	Common Name	2-butene
	CAS Number	107-01-7	Molecular Weight	56.10630
	Density	0.636 g/cm3	Boiling Point	1 °C(lit.)
	Molecular Formula	C₄H₈	Melting Point	−140 °C(lit.)
	MSDS	N/A	Flash Point	<−30 °F

Name	but-2-ene
Synonym	More Synonyms

Density	0.636 g/cm3
Boiling Point	1 °C(lit.)
Melting Point	−140 °C(lit.)
Molecular Formula	C₄H₈
Molecular Weight	56.10630
Flash Point	<−30 °F
Exact Mass	56.06260
LogP	1.58240
Vapour density	2 (vs air)
Vapour Pressure	1600mmHg at 25°C
Index of Refraction	1.384

CHEMICAL IDENTIFICATION

RTECS NUMBER :: EM2932000

CHEMICAL NAME :: 2-Butene

CAS REGISTRY NUMBER :: 107-01-7

BEILSTEIN REFERENCE NO. :: 1718755

LAST UPDATED :: 199710

DATA ITEMS CITED :: 6

MOLECULAR FORMULA :: C4-H8

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LC50 - Lethal concentration, 50 percent kill

ROUTE OF EXPOSURE :: Inhalation

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 425 ppm

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: 85JCAE "Prehled Prumyslove Toxikologie; Organicke Latky," Marhold, J., Prague, Czechoslovakia, Avicenum, 1986 Volume(issue)/page/year: -,12,1986 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - 14144 No. of Facilities: 35 (estimated) No. of Industries: 3 No. of Occupations: 8 No. of Employees: 1648 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - 14144 No. of Facilities: 32 (estimated) No. of Industries: 1 No. of Occupations: 1 No. of Employees: 545 (estimated)

Hazard Codes	F: Flammable;
Risk Phrases	R12
Safety Phrases	S9-S16-S33
RIDADR	UN 1012 2.1
WGK Germany	3
RTECS	EM2932000
Hazard Class	2.1
HS Code	2901232000

Precursor 10
CAS#:54509-73-8 ethene CAS#:106-99-0 butadiene CAS#:106-98-9 1-Butene CAS#:78-83-1 isobutanol
CAS#:115-11-7 Isobutylene CAS#:108-29-2 γ-Valerolactone CAS#:78-92-2 (±)-2-Butanol CAS#:64-17-5 Ethanol
CAS#:75-28-5 Isobutane Resid... CAS#:106-97-8 n-Butane
DownStream 10
CAS#:110030-28-9 4-butan-2-yl-2-... CAS#:10574-17-1 butan-2-yloxybenzene CAS#:100543-40-6 1-[butan-2-yl(b... CAS#:565-75-3 2,3,4-trimethyl...
CAS#:560-21-4 2,3,3-trimethyl... CAS#:540-84-1 2,2,4-Trimethyl... CAS#:564-02-3 2,2,3-Trimethyl... CAS#:583-48-2 3,4-Dimethylhexane
CAS#:589-43-5 2,4-Dimethylhexane CAS#:5510-99-6 UNII:862GFQ832E

HS Code	2901232000
Summary	2901232000 (e)-but-2-ene。supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward)。VAT:17.0%。tax rebate rate:9.0%。MFN tarrif:2.0%。general tariff:20.0%

butene-2

(2E)-2-Butene

butylene-2

CH3CH=CHCH3

2-Buten

MFCD00064458

2-BUTYLENE

2-BUTENE

EINECS 210-855-3

E/Z-2-butene

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Shanghai Nianxing Industrial Co., Ltd
China
Product Name: Palmitic acid
Price: Check
Purity: 98.0%
Delivery: 10 Day
Contact: Yang
Email: sales@echemcloud.com

Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: 2-butene
Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
Purity: 98.0%
Delivery: Inquiry
Contact: Ms Wang
Email: enquiry@dycnchem.com

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2-butene

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Chemical & Physical Properties

Toxicological Information

CHEMICAL IDENTIFICATION

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

Safety Information

Synthetic Route

Precursor & DownStream

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The content on this webpage is sourced from various professional data sources. If you have any questions or concerns regarding the content, please feel free to contact service1@chemsrc.com.