1,2-Epoxybutane

1,2-Epoxybutane
Names
	Preferred IUPAC name Ethyloxirane
	Other names 1,2-Butyleneoxide; 1,2-Buteneoxide; Ethyloxyrane
Identifiers
CAS Number	106-88-7 ; (R): 3760-95-0; (S): 30608-62-9;
3D model (JSmol)	Interactive image;
ChemSpider	7546; (R): 9322778; (S): 9073889;
ECHA InfoCard	100.003.127
EC Number	203-438-2;
PubChem CID	7834; (R): 11147670; (S): 10898629;
RTECS number	EK3675000;
UNII	FR67H5388O ;
UN number	3022
CompTox Dashboard (EPA)	DTXSID501096378, DTXSID001022374 DTXSID6020569, DTXSID501096378, DTXSID001022374 ;
	InChI InChI=1S/C4H8O/c1-2-4-3-5-4/h4H,2-3H2,1H3 Key: RBACIKXCRWGCBB-UHFFFAOYSA-N; (R): InChI=1S/C4H8O/c1-2-4-3-5-4/h4H,2-3H2,1H3/t4-/m1/s1 Key: RBACIKXCRWGCBB-SCSAIBSYSA-N; (S): InChI=1S/C4H8O/c1-2-4-3-5-4/h4H,2-3H2,1H3/t4-/m0/s1 Key: RBACIKXCRWGCBB-BYPYZUCNSA-N;
	SMILES CCC1CO1; (R): CC[C@@H]1CO1; (S): CC[C@H]1CO1;
Properties
Chemical formula	C4H8O
Molar mass	72.107 gÂ·molâ1
Appearance	colorless liquid
Density	0.83 gÂ·cmâ3
Melting point	â150 Â°C (â238 Â°F; 123 K)
Boiling point	65 Â°C (149 Â°F; 338 K)
Viscosity	0.40 mPa.s
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H225, H302, H312, H315, H319, H332, H335, H351, H412
Precautionary statements	P201, P202, P210, P233, P240, P241, P242, P243, P261, P264, P270, P271, P273, P280, P281, P301+P312, P302+P352, P303+P361+P353, P304+P312, P304+P340, P305+P351+P338, P308+P313, P312, P321, P322, P330, P332+P313, P337+P313, P362, P363, P370+P378, P403+P233, P403+P235, P405, P501
Flash point	â22 Â°C (â8 Â°F; 251 K)
	Except where otherwise noted, data are given for materials in their standard state (at 25 Â°C [77 Â°F], 100 kPa). Infobox references

1,2-Epoxybutane is an organic compound with the formula CH₂(O)CHCH₂CH₃. It is a chiral epoxide prepared by oxidation of 1-butene.^[1]

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1,2-Epoxybutane

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Names

Preferred IUPAC name Ethyloxirane
Other names 1,2-Butyleneoxide 1,2-Buteneoxide Ethyloxyrane
Identifiers
CAS Number	106-88-7^Y (R): 3760-95-0 (S): 30608-62-9
3D model (JSmol)	Interactive image
ChemSpider	7546 (R): 9322778 (S): 9073889
ECHA InfoCard	100.003.127
EC Number	203-438-2
PubChem CID	7834 (R): 11147670 (S): 10898629
RTECS number	EK3675000
UNII	FR67H5388O^Y
UN number	3022
CompTox Dashboard (EPA)	DTXSID501096378, DTXSID001022374 DTXSID6020569, DTXSID501096378, DTXSID001022374
InChI InChI=1S/C4H8O/c1-2-4-3-5-4/h4H,2-3H2,1H3 Key: RBACIKXCRWGCBB-UHFFFAOYSA-N (R): InChI=1S/C4H8O/c1-2-4-3-5-4/h4H,2-3H2,1H3/t4-/m1/s1 Key: RBACIKXCRWGCBB-SCSAIBSYSA-N (S): InChI=1S/C4H8O/c1-2-4-3-5-4/h4H,2-3H2,1H3/t4-/m0/s1 Key: RBACIKXCRWGCBB-BYPYZUCNSA-N
SMILES CCC1CO1 (R): CC[C@@H]1CO1 (S): CC[C@H]1CO1
Properties
Chemical formula	C₄H₈O
Molar mass	72.107 gÂ·mol^â1
Appearance	colorless liquid
Density	0.83 gÂ·cm^â3
Melting point	â150 Â°C (â238 Â°F; 123 K)
Boiling point	65 Â°C (149 Â°F; 338 K)
Viscosity	0.40 mPa.s
Hazards
GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H225, H302, H312, H315, H319, H332, H335, H351, H412
Precautionary statements	P201, P202, P210, P233, P240, P241, P242, P243, P261, P264, P270, P271, P273, P280, P281, P301+P312, P302+P352, P303+P361+P353, P304+P312, P304+P340, P305+P351+P338, P308+P313, P312, P321, P322, P330, P332+P313, P337+P313, P362, P363, P370+P378, P403+P233, P403+P235, P405, P501
Flash point	â22 Â°C (â8 Â°F; 251 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 Â°C [77 Â°F], 100 kPa). Infobox references