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:
Molecular Weight:
84.16
UNSPSC Code:
12352100
NACRES:
NA.22
PubChem Substance ID:
EC Number:
209-263-8
Beilstein/REAXYS Number:
1361357
MDL number:
Assay:
≥99%
Form:
liquid
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
Quality Level
bp
73 °C (lit.)
mp
−75 °C (lit.)
density
0.708 g/mL at 25 °C (lit.)
storage temp.
2-8°C
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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.
Application
2,3-Dimethyl-2-butene was employed as substrate in photoinduced molecular transformations involving 2-hydroxy-1,4-naphthoquinones.
signalword
Danger
hcodes
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
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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
Bridgett E Coleman et al.
The journal of physical chemistry. A, 114(48), 12667-12674 (2010-11-17)
The matrix isolation technique, combined with infrared spectroscopy and twin jet codeposition, has been used to characterize intermediates formed during the ozonolysis of 2,3-dimethyl-2-butene (DMB). Absorptions of early intermediates in the twin jet experiments grew up to 200% upon annealing
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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