Isopentana

Isopentana
Nama


Nama IUPAC 2-Metilbutana
Nama lain Metil butana
Penanda
Nomor CAS	78-78-4^Y
Model 3D (JSmol)	Gambar interaktif
3DMet	{{{3DMet}}}
ChEBI	CHEBI:30362^Y
ChemSpider	6308^Y
Nomor EC
Nomor RTECS	{{{value}}}
UNII	ZH67814I0O^Y
CompTox Dashboard (EPA)	DTXSID901335409, DTXSID201032357 DTXSID8025468, DTXSID901335409, DTXSID201032357
InChI InChI=1S/C5H12/c1-4-5(2)3/h5H,4H2,1-3H3^Y Key: QWTDNUCVQCZILF-UHFFFAOYSA-N^Y InChI=1/C5H12/c1-4-5(2)3/h5H,4H2,1-3H3 Key: QWTDNUCVQCZILF-UHFFFAOYAE
SMILES CC(C)CC
Sifat
Rumus kimia	C₅H₁₂
Massa molar	72.15 g/mol
Penampilan	cairan tak berwarna
Densitas	0.616 g/ml, liquid^[1]
Titik lebur	−159.9 °C (113.3 K)^[1]
Titik didih	27.7 °C (300.9 K)^[1]
Kelarutan dalam air	Ya
Termokimia
Entropi molar standar (S^o)	260.7 J·K⁻¹·mol⁻¹
Entalpi pembentukan standar (Δ_fH^o)	−179 kJ/mol
Entalpi pembakaran standar Δ_cH^o₂₉₈	−3504 kJ/mol
Bahaya
Klasifikasi UE (DSD) (usang)	Mudah terbakar (F+) Beracun (Xn) Berbahaya untuk lingkungan (N)
Frasa-R	R12, R51/53, R65, R66, R67
Frasa-S	S2, S9, S16, S29, S33, S61, S62
Titik nyala	<−51 °C
Ambang ledakan	1.4–7.6%
Senyawa terkait
Kecuali dinyatakan lain, data di atas berlaku pada suhu dan tekanan standar (25 °C [77 °F], 100 kPa).
Y verifikasi (apa ini ^YN ?)
Referensi

Isopentana, C₅ H₁₂, disebut juga dengan metil butana atau 2-metil butana adalah alkana rantai bercabang dengan 5 atom karbon. Isopentana adalah senyawa yang sangat mudah terbakar pada suhu dan tekanan ruang. Titik didih normal dari senyawa ini hanya beberapa derajat di atas suhu ruangan. Isopentana biasanya dipakai dengan mencampurkannya dengan nitrogen cair.

Gugus isopentil adalah sub gugus dari gugus pentil. Mempunyai struktur kimia -CH₃CH₂CH(CH₃)₂.

Isomer

Isopentana adalah satu dari tiga isomer struktur yang mempunyai rumus kimia C₅H₁₂. Isomer yang lainnya adalah pentana (n-pentana) dan dimetil propana (neopentana).

Penggunaan

Contohnya Isopentana merupakan salah satu bahan yang terdapat pada produk pasta gigi Aquafresh® dan Sensodyne®.^[2]

Referensi

^ ^a ^b ^c James Wei (1999), Molecular Symmetry, Rotational Entropy, and Elevated Melting Points. Ind. Eng. Chem. Res., volume 38 issue 12, pp. 5019–5027 {{doi:10.1021/ie990588m}}
^ "Aquafresh Website". Diarsipkan dari versi asli tanggal 2011-12-30. Diakses tanggal 2012-01-01.

Pranala luar

International Chemical Safety Card 1153
IUPAC Nomenclature of Organic Chemistry Diarsipkan 2011-06-08 di Wayback Machine. (online version of the "Blue Book")

Alkana

Metana (CH
4)
Etana (C
2H
6)
Propana (C
3H
8)
Butana (C
4H
10)
Pentana (C
5H
12)
Heksana (C
6H
14)
Heptana (C
7H
16)
Oktana (C
8H
18)
Nonana (C
9H
20)
Dekana (C
10H
22)
Undekana (C
11H
24)
Dodekana (C
12H
26)
Tridekana (C
13H
28)
Tetradekana (C
14H
30)
Pentadekana (C
15H
32)
Heksadekana / Setana (C
16H
34)
Heptadekana (C
17H
36)
Oktadekana (C
18H
38)
Nonadekana (C
19H
40)
Ikosana (C
20H
42)
Heneikosana (C
21H
44)
Tetrakosana (C
24H
50)
Nonakosana (C
29H
60)
Hentriakontana (C
31H
64)

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