Methane sī siōng kan-tan-ê chi̍t-khóaⁿ Alkane, i-ê hòa-ha̍k-sek siá-chòe CH4. 1-ê methane sī 1-ê carbon keng-iû 4-ê sp3 hūn-sêng kúi-tō lâi hām 4-ê hydrogen só͘ chó͘-sêng ê hoà-ha̍p-bu̍t. Methane sī thian-jiân-khì ê chú-iàu sêng-hun. In-ūi methane ū siong-tùi kah koâiⁿ-ê sán-liōng, só͘-í i sī chi̍t-ê chin jia̍t-mn̂g-ê jiân-liāu; put-kò, siu-chi̍p methane ē khì tú-tio̍h kī-su̍t-ê thiau-chiàn, in-ūi methane tī phiau-chún chōng-hóng chi-hā sī khì-thé.
Quick Facts Hō-miâ, Sek-pia̍t-hō ...
Methane
 |
 Ball and stick model of methane |
 Spacefill model of methane |
|
| Hō-miâ |
| Iu-sian ê IUPAC hō-miâ
|
Hē-thóng-tek IUPAC hō-miâ
Carbane (never recommended [1]) |
Kî-tha hō-miâ
- Marsh gas
- Natural gas
- Carbon tetrahydride
- Hydrogen carbide
|
| Sek-pia̍t-hō |
CAS Number |
|
3D model (JSmol) |
|
| 3DMet |
B01453 |
Beilstein Reference |
1718732 |
| ChEBI |
|
| ChEMBL |
|
| ChemSpider |
|
| ECHA InfoCard |
100.000.739 |
| EC Number |
200-812-7 |
Gmelin Reference |
59 |
| KEGG |
|
| MeSH |
Methane |
|
|
| RTECS number |
PA1490000 |
| UNII |
|
| UN number |
1971 |
InChI
InChI=1S/CH4/h1H4 Y Key: VNWKTOKETHGBQD-UHFFFAOYSA-N Y
|
|
| Sèng-chit |
|
CH4 |
| Mole chit-liōng |
16.04 g·mol−1 |
| Gōa-māu |
Colorless gas |
| Khì-bī |
Odorless |
| Bi̍t-tō͘ |
- 0.657 kg·m−3 (gas, 25 °C, 1 atm)
- 0.717 kg·m−3 (gas, 0 °C, 1 atm)[2]
- 422.8 g·L−1 (liquid, −162 °C)[3]
|
| Iûⁿ-tiám |
−182.456 °C (−296.421 °F; 90.694 K)[3] |
| Hut-tiám |
−161.5 °C (−258.7 °F; 111.6 K)[3] |
Tī chúi ê iûⁿ-kái-tō͘ |
22.7 mg·L−1[4] |
| Iûⁿ-kái-tō͘ |
Soluble in ethanol, diethyl ether, benzene, toluene, methanol, acetone and insoluble in water |
| log P |
1.09 |
Henry's law
constant (kH) |
14 nmol·Pa−1·kg−1 |
| Conjugate acid |
Methanium |
| Conjugate base |
Methyl anion |
Chû-hòa-lu̍t (χ) |
−17.4×10−6 cm3·mol−1[5] |
| Kò͘-chō |
Point group |
Td |
Molecular shape |
Tetrahedron |
Dipole moment |
0 D |
| Jia̍t-hòa-ha̍k[6] |
Heat capacity (C) |
35.7 J·(K·mol)−1 |
Piau-chún mole
entropy (So298) |
186.3 J·(K·mol)−1 |
Piau-chún hêng-sêng
enthalpy (ΔfHo298) |
−74.6 kJ·mol−1 |
Std enthalpy of
combustion (ΔcHo298) |
−891 kJ·mol−1 |
| Gûi-hiám[7] |
| GHS pictograms |
 |
| GHS signal word |
DANGER |
GHS hazard statements |
H220 |
GHS precautionary statements |
P210 |
| NFPA 704 |
|
| Ín-hóe-tiám |
−188 °C (−306.4 °F; 85.1 K) |
Autoignition
temperature |
537 °C (999 °F; 810 K) |
| Explosive limits |
4.4–17% |
| Koan-liân hòa-ha̍p-bu̍t |
Related alkanes |
- Methyl iodide
- Difluoromethane
- Iodoform
- Carbon tetrachloride
|
Tû-liáu te̍k-pia̍t chí chhut, chu-liāu sī kun-kù bu̍t-chit ê piau-chún chōng-thài (tī 25 °C [77 °F], 100 kPa). |
| N cha-chèng (YN sī siáⁿ ?) |
| Infobox chham-chiàu |
|
|
Close
