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Merck
CN

220159

2,3-Dimethyl-2-butene

≥99%

Synonym(s):

Tetramethylethylene

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About This Item

Linear Formula:
(CH3)2C=C(CH3)2
CAS Number:
563-79-1
Molecular Weight:
84.16
UNSPSC Code:
12352100
NACRES:
NA.22
PubChem Substance ID:
24853167
EC Number:
209-263-8
Beilstein/REAXYS Number:
1361357
MDL number:
MFCD00008897
Assay:
≥99%
Form:
liquid

Key Documents

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Product Name

2,3-Dimethyl-2-butene, ≥99%

InChI key

WGLLSSPDPJPLOR-UHFFFAOYSA-N

InChI

1S/C6H12/c1-5(2)6(3)4/h1-4H3

SMILES string

C\C(C)=C(\C)C

vapor pressure

215 mmHg ( 37.7 °C)

assay

≥99%

form

liquid

autoignition temp.

754 °F

refractive index

n20/D 1.412 (lit.)

bp

73 °C (lit.)

mp

−75 °C (lit.)

density

0.708 g/mL at 25 °C (lit.)

storage temp.

2-8°C

Quality Level

100

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Application

2,3-Dimethyl-2-butene was employed as substrate in photoinduced molecular transformations involving 2-hydroxy-1,4-naphthoquinones.

General description

2,3-Dimethyl-2-butene undergoes ozonolysis in dark to yield hydroxyl radical. Reaction of ozone with 2,3-dimethyl 2-butene (DMB) has been investigated using a flow-tube interfaced to UV photoelectron spectrometer. DMB forms adduct with thianthrene cation radical tetrafluoroborate at 0°C and -15°C.

pictograms

FlameHealth hazard
GHS02,GHS08

signalword

Danger

hcodes

H225,H304

Hazard Classifications

Asp. Tox. 1 - Flam. Liq. 2

Storage Class

3 - Flammable liquids

wgk

WGK 3

flash_point_f

17.6 °F - closed cup

flash_point_c

-8 °C - closed cup

ppe

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter

Regulatory Information

危险化学品
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Certificates of Analysis (COA)

Lot/Batch Number
SHBR8100
SHBN6703
SHBL0062
SHBH5043V
SHBH1200V

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The Journal of Organic Chemistry, 58, 4614-4614 (1993)
Bing-Jun Zhao et al.
The Journal of organic chemistry, 71(10), 3737-3742 (2006-05-06)
Thianthrene cation radical tetrafluoroborate (Th*+ BF4-) has been found to add to 2,3-dimethyl-2-butene (DMB) at 0 degrees C and -15 degrees C. The adduct, 2,3-dimethyl-2,3-(5,10-thianthreniumdiyl)butane ditetrafluoroborate (12), was isolated at -15 degrees C, and its 1H NMR spectrum was recorded
Maryline Pflieger et al.
Environmental science & technology, 47(12), 6239-6246 (2013-05-15)
In order to investigate the heterogeneous oxidation kinetics of the herbicide terbuthylazine (TERB), a stable and reproducible generation system of "dark" hydroxyl radical in the gas phase was developed and optimized using a PTR-MS. TERB was adsorbed on silica particles
Bert F Sels et al.
Journal of the American Chemical Society, 129(21), 6916-6926 (2007-05-10)
A heterogeneous catalyst containing MoO42- exchanged on layered double hydroxides (Mo-LDHs) is used to produce 1O2 from H2O2, and with this dark 1O2, unsaturated hydrocarbons are oxidized in allylic peroxides. The oxidation kinetics are studied in detail and are compared
P Di Mascio et al.
Free radical biology & medicine, 12(6), 471-478 (1992-01-01)
Ultraweak chemiluminescence arising from lipoperoxidation has been attributed by several authors to the radiative deactivation of singlet oxygen and triplet carbonyl products. The latter emitters have been suggested to come from annihilation of RO. and ROO. radicals as well as
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