Home Categories Organic Chemistry 2,3-Dimethylbutane
A3157612

2,3-Dimethylbutane , 98% , 79-29-8

Synonym(s):
Diisopropyl

CAS NO.:79-29-8

Empirical Formula: C6H14

Molecular Weight: 86.18

MDL number: MFCD00008925

EINECS: 201-193-6

Update time: 2022-07-08

PRODUCT Properties

Melting point: -129 °C
Boiling point: 58 °C(lit.)
Density  0.662 g/mL at 25 °C(lit.)
vapor density  3 (vs air)
vapor pressure  7.41 psi ( 37.7 °C)
refractive index  n20/D 1.375(lit.)
Flash point: −28 °F
storage temp.  Flammables area
solubility  In methanol: 495, 593, 760, and 1,700 g/L at 5, 10, 15, and 20 °C, respectively. Miscible at higher temperatures (Kiser et al., 1961).
pka >14 (Schwarzenbach et al., 1993)
form  Liquid
color  Colorless
explosive limit ~7.7%
Odor Threshold 0.42ppm
Water Solubility  Soluble in water (1mg/ml @22°C), DMSO, ethanol, acetone.
BRN  1730737
Henry's Law Constant 1.28(atm?m3/mol) at 25 °C (Mackay and Shiu, 1981)
Exposure limits ACGIH TLV: TWA and STEL for all isomers except n-hexane are 500 and 1,000 ppm, respectively (adopted).
Dielectric constant 1.8899999999999999
Stability: Stable. Flammable. Readily forms explosive mixtures with air. Note low flash point. Incompatible with strong oxidizing agents, oxygen.
InChIKey ZFFMLCVRJBZUDZ-UHFFFAOYSA-N
LogP 3.42
CAS DataBase Reference 79-29-8(CAS DataBase Reference)
EPA Substance Registry System 2,3-Dimethylbutane (79-29-8)

Description and Uses

2,3-Dimethylbutane is a colorless liquid.Molecular weight= 86.20; Boiling point = 58℃; Flashpoint= 229℃; Autoignition temperature= 405℃.Explosive limits: LEL = 1.2%; UEL= 7.0%. HazardIdentification (based on NFPA-704 M Rating System):Health 2, Flammability 3, Reactivity 0. Insoluble in water

2,3-Dimethylbutane is used in high octane fuels and in organic synthesis. It is also used as a gas chromatography standard.

Safety

Symbol(GHS) 
GHS02,GHS07,GHS08,GHS09
Signal word  Danger
Hazard statements  H225-H304-H315-H336-H411
Precautionary statements  P210-P233-P273-P301+P310-P303+P361+P353-P331
Hazard Codes  F,Xn,N
Risk Statements  11-65-67-51/53-38
Safety Statements  16-23-33-62-61-29-9
RIDADR  UN 2457 3/PG 2
OEB A
OEL TWA: 100.0 ppm; 350.0 mg/m3, STEL: 510.0 ppm; 1800.0 mg/m3
WGK Germany  3
RTECS  EJ9350000
Autoignition Temperature 788 °F
TSCA  Yes
HazardClass  3
PackingGroup  II
HS Code  29011000
Hazardous Substances Data 79-29-8(Hazardous Substances Data)

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