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Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: Trans-2,3-epoxybutane
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21490-63-1

21490-63-1 structure

21490-63-1 structure

Name: trans-2,3-Epoxybutane
Chemical Name: trans-2,3-Epoxybutane
CAS Number: 21490-63-1
Molecular Formula: C₄H₈O
Molecular Weight: 72.10570
Catalog: Organic raw materials Hydrocarbon compounds and their derivatives Cyclic hydrocarbon
Create Date: 2018-02-11 08:00:00
Modify Date: 2026-07-08 14:31:45

Name	trans-2,3-Epoxybutane
Synonyms	TRANS-2-BUTENE OXIDE EINECS 244-406-8 3-epoxy-trans-butan 3-oxy-trans-butan Butane, 2,3-oxy-, trans Oxirane, 2,3-dimethyl-,(2R,3R)-rel rac-trans-butene oxide TRANS-2,3-OXYBUTANE ISO 9001：2015 REACH trans-β-butylene oxide trans-2,3-OXYBUTANE, trans-2,3-OXYBUTANE, trans-2,3-OXYBUTANE, trans-2,3-OXYBUTANE trans-β-Butylene oxide, trans-2,3-Dimethyloxirane, trans-2-Butene oxide TRANS-2,3-OXYBUTANE trans-2,3-oxybutane, trans-2-Butene oxide trans-2-Butylene Oxide Oxirane, 2,3-dimethyl-, (2R,3R)-rel- (9CI) trans-2,3-dimethyloxyrane 2,3-Butylene oxide (trans) rel-(2R,3R)-2,3-oxybutane rel-(2R,3R)-2,3-Dimethyloxirane rans-2,3-oxybutane trans-2,3-dimethyloxirane trans-á-butylene oxide TRANS-2,3-DIMETHYLOXIRANE TRANS-BETA-BUTYLENE OXIDE (E)-2,3-oxybutane trans-2-butyleneoxide TRANS-2 3-OXYBUTANE (RACEMIC) 2,3-Dimethyl-oxirane (E) MFCD00005129 3-dimethyl-trans-oxiran TRANS-2,3-EPOXYBUTANE

Density	0.804
Boiling Point	56.5ºC at 760mmHg
Molecular Formula	C₄H₈O
Molecular Weight	72.10570
Flash Point	-26°C
Exact Mass	72.05750
PSA	12.53000
LogP	0.79360
Index of Refraction	n20/D 1.373

CHEMICAL IDENTIFICATION

RTECS NUMBER :: EK3855040

CHEMICAL NAME :: Butane, 2,3-epoxy-, trans-

CAS REGISTRY NUMBER :: 21490-63-1

BEILSTEIN REFERENCE NO. :: 0079772

LAST UPDATED :: 199612

DATA ITEMS CITED :: 2

MOLECULAR FORMULA :: C4-H8-O

MOLECULAR WEIGHT :: 72.12

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

MUTATION DATA

TYPE OF TEST :: Sister chromatid exchange

TEST SYSTEM :: Rodent - hamster Lung

DOSE/DURATION :: 25 mmol/L

REFERENCE :: MUREAV Mutation Research. (Elsevier Science Pub. B.V., POB 211, 1000 AE Amsterdam, Netherlands) V.1- 1964- Volume(issue)/page/year: 249,55,1991

Hazard Codes	F: Flammable;Xi: Irritant;
Risk Phrases	R11;R20/21/22;R36/37/38
Safety Phrases	S16-S23-S26-S36/37/39
RIDADR	UN 3271 3/PG 2
WGK Germany	3
RTECS	EK3855040
Packaging Group	II
HS Code	2910900090

Precursor 9
624-64-6 590-18-1 69571-15-9 563-84-8
5798-80-1 107-01-7 85082-23-1 286-20-4
133192-32-2
DownStream 10
565-60-6 77-74-7 513-85-9 6982-25-8
590-18-1 624-64-6 78-93-3 78-92-2
106-97-8 10325-41-4

HS Code	2910900090
Summary	2910900090. epoxides, epoxyalcohols, epoxyphenols and epoxyethers, with a three-membered ring, and their halogenated, sulphonated, nitrated or nitrosated derivatives. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:5.5%. General tariff:30.0%

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