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2-Methylhexane

2-Methylhexane

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2-Methylhexane Cov ntaub ntawv yooj yim
Khoom npe: 2-Methylhexane
Synonyms: 2-methyl-hexan; d726; ethylhexane, 99% 5ML; NSC -24840
CAS: 591-76-4
MF: C7H16
MW: 100.2
EINECS: 209-730-6
Khoom Categories:  
Mol File: 591-76-4.mol
2-Methylhexane Structure
 
2-Methylhexane Chemical Properties
Melting point -118 degree
Boiling point 90 degree (lit.)
ceev 0.679 g/mL ntawm 25 degree (lit.)
vapor siab 2.27 psi (37.7 degree)
Refractive Index n20/D 1.384 (lit.)
Fp 25 degree F
cia temp. Flammables cheeb tsam
solubility Soluble hauv acetone, cawv, benzene, chloroform, ligroin, thiab ether (Weast, 1986). Miscible nrog kua aliphatic hydrocarbons.
daim ntawv Ua kua
xim Ntshiab xim tsis muaj xim
tawg txwv ~7%
Dej Solubility 3.8 mg / L ntawm 23 degree (Coates li al., 1985)
2.54 mg / kg ntawm 25 degree (co flask-GLC, Nqe, 1976)
BRN 1696856
Henry's Law Constant 0.512 atm?m3/mol ntawm 26.9 degree , 0.311 ntawm 35.0 degree , 0.256 ntawm 45.0 degree (dynamic headspace, Hansen li al., 1995)
Dielectric tsis tu ncua 1.9 (20 degree)
LogP 4.118 (yeem)
CAS DataBase Reference 591-76-4(CAS DataBase Reference)
EPA Tshuaj Registry System 2-Methylhexane (591-76-4)
 
Cov ntaub ntawv kev nyab xeeb
Hazard Codes F, Xn, N
Risk Statements 11-38-50/53-65-67
Cov lus hais txog kev nyab xeeb 9-16-29-33-60-61-62
RIDADR UN 3295 3/PG 2
WGK Germany 3
RTECS TIAB SA 3871500
Autoignition Kub 536 degree F
HazardClass 3.1
PackingGroup II
HS Code 29011000
 
MSDS Cov Ntaub Ntawv
Tus kws kho mob Lus
SigmaAldrich Lus Askiv
ACROS Lus Askiv
 
2-Kev Siv Methylhexane Thiab Synthesis
Chemical Properties ntshiab colorless kua
Lub cev muaj zog Ntshiab, tsis muaj xim, flammable, kua dej uas muaj ntxhiab tsw zoo ib yam li pentane, 2-methylpentane, 3- methylpentane, hexane, thiab 3-hexane. Cov ntxhiab tsw qhov pib ntawm 420 ppbvtau tshaj tawm los ntawm Nagata thiab Takeuchi (1990).
Siv 2-Methylhexane feem ntau yog siv los ua qauviso-alkane hauv kev tshawb fawb txogiso-alkane oxidation, vapor-kua theem equilibria ntawm heptane isomers thiab catalytic cracking.
Siv Organic synthesis.
Hazard Flammable, phom sij txaus ntshai, explosivelimits nyob rau hauv huab cua 1-6%.
Qhov chaw Schauer et al. (1999) tau tshaj tawm 2-methylhexane nyob rau hauv lub diesel-powered nruab nrab-lub luag hauj lwm tsheb tso tawm ntawm tus nqi emission ntawm 570 ug / km.
Schauer et al. (2001) ntsuas cov organic compound emission rates rau volatile organic compounds, gas-theem semi-volatile organic compounds, thiab particle-phase organic compounds from the home (fireplace) combustion of Pine, Oak, and eucalyptus. Cov pa roj-theem emission tus nqi ntawm 2-methylhexane yog 2.6 mg / kg ntawm ntoo thuv hlawv. Emission tus nqi ntawm 2-methylhexane tsis tau ntsuas thaum lub sij hawm combustion ntawm ntoo qhib thiab eucalyptus.
California Phase II kho cov roj av muaj 2-methylhexane ntawm qhov concentration ntawm 15.3 g / kg. Gas-phase tailpipe emission tus nqi los ntawm roj av-powered tsheb nrog thiab tsis muaj catalytic converters yog 2.88 thiab 372 mg / km, raws li (Schauer li al., 2002).
Environmental txoj hmoo Tshuaj lom neeg.Riser-Roberts (1992) tau tshaj tawm 2- thiab 5-methylhexanoic acids li metabolites los ntawm cov kab mob Pseudomonas aeruginosa.
Photolytic.Raws li kev tshaj tawm photooxidation cov tshuaj tiv thaiv tus nqi tas li ntawm 6.80 x 10-12cm3/molecule?sec nrog OH radicals, ib nrab-lub neej ntawm 2-methylhexane yog 25 h (Altshuller, 1990).
Tshuaj/Physical.Ua tiav combustion hauv huab cua ua rau carbon dioxide thiab dej vapor. 2- Methylhexane yuav tsis hydrolyze vim nws tsis muaj ib pab pawg ua haujlwm hydrolyzable.
Txoj kev Purification Purify nws los ntawm azeotropic distillation nrog MeOH, tom qab ntawd ntxuav nws nrog dej (kom tshem tawm MeOH), qhuav nws hla hom 4A molecular sieves thiab distil nws. [Beilstein 1 IV 397.]
 
2-Methylhexane Kev Npaj Cov Khoom Siv Thiab Cov Khoom Raw
Cov khoom siv raw Butylcyclopropane-->5-METHYL-3-HEXANOL-->2-METHYL-2-HEXENE-->2-METHYL-3-HEXANOL-->ETHYLCYCLOPENTANE-->2,2-Dimethylpentane-->3-METHYLHEXANE-->1,3-DIMETHYLCYCLOPENTANE-->Methylcyclopentane-->1,1-DIMETHYLCYCLOPENTANE-->2-methylpentane-->Cyclohexane, methyl-, radical ion(1+)-->n-Butane-->ISOBUTANE-->Heptane-->Hexane
Cov khoom npaj 2-METHYL-2-HEXANOL-->2, 4-DIMETHYLPENTANE

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