Methanethiol

Methanethiol
Ball-and-stick model of the methanethiol molecule	Space-filling model of the methanethiol molecule
Hō-miâ
	Iu-sian ê IUPAC hō-miâ Methanethiol
	Kî-tha hō-miâ Methyl mercaptan; Mercaptomethane; Methiol; Thiomethyl alcohol/Thiomethanol; Methylthiol
Sek-pia̍t-hō
CAS Number	74-93-1 ;
3D model (JSmol)	Interactive image;
3DMet	B00105
ChEBI	CHEBI:16007 ;
ChemSpider	855 [chemspiders];
ECHA InfoCard	100.000.748
EC Number	200-822-1
KEGG	C00409 ;
PubChem CID	878;
RTECS number	PB4375000
UNII	2X8406WW9I ;
UN number	1064
	InChI InChI=1S/CH3SH/c1-2/h2H,1H3 Key: LSDPWZHWYPCBBB-UHFFFAOYSA-N ; InChI=1/CH3SH/c1-2/h2H,1H3 Key: LSDPWZHWYPCBBB-UHFFFAOYAW;
	SMILES SC;
Sèng-chit
Hòa-ha̍k-sek	CH3SH
Mole chit-liōng	48.11 g·mol−1
Gōa-māu	colorless gas
Khì-bī	Distinctive, like that of rotten cabbage or eggs
Bi̍t-tō͘	0.9 g/mL (liquid at 0°C)
Iûⁿ-tiám	−123 °C (−189 °F; 150 K)
Hut-tiám	5.95 °C (42.71 °F; 279.10 K)
Tī chúi ê iûⁿ-kái-tō͘	2%
Iûⁿ-kái-tō͘	alcohol, ether
Cheng-khì-ap	1.7 atm (20°C)
Acidity (pKa)	~10.4
Gûi-hiám
GHS pictograms
GHS signal word	Gûi-hiám
NFPA 704	4 4 1
Ín-hóe-tiám	−18 °C; 0 °F; 255 K
Autoignition; temperature	364 °C; 687 °F; 637 K
Explosive limits	3.9%-21.8%
	Lethal dose or concentration (LD, LC):
LD50 (median dose)	60.67 mg/kg (tsia̍h-ling tōng-bu̍t)
LC50 (median concentration)	3.3 ppm (mouse, 2 hr); 675 ppm (rat, 4 hr)
	Bí-kok kiān-hong pī-pha̍k chè-hān (NIOSH):
PEL (Ē-thong-kòe)	C 10 ppm (20 mg/m3)
REL (Chhui-chiàn)	C 0.5 ppm (1 mg/m3) [15-minute]
IDLH (Chek-sî gûi-hiám)	150 ppm
Koan-liân hòa-ha̍p-bu̍t
Koan-liân hòa-ha̍p-bu̍t	Ethanethiol Hydrogen sulfide
	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).
	cha-chèng ( sī siáⁿ ?)
	Infobox chham-chiàu

Methanethiol (methanethiol /ˌmɛθ.eɪn.ˈθaɪ.ɒl/, MeSH, (mā kiò-tsò methyl mercaptan); kah-ki liû-sûn (甲基硫醇)) sī tsi̍t-tsióng iú-ki liû huà-ha̍p-bu̍t [en] (有機硫化合物), huà-ha̍k sik sī CH
3SH. Methanethiol sī tsi̍t-tsióng bô-sik ê khì-thé, kū-iú to̍k-ti̍k ê àu-tshàu khì-bī. Methanethiol sī tsi̍t-tsióng thian-jiân ê bu̍t-tsit, tsûn-tsāi teh tōng-bu̍t (pau-kuat jîn-luī) ê hiat-i̍k, tuā-náu hām hùn-piān í-ki̍p si̍t-bu̍t tsoo-tsit tang-tiong. Methanethiol mā thian-jiân tsûn-tsāi teh tsi̍t-kuá-á si̍t-bu̍t tang-tiong, pí-jû tsi̍t-kuá-á kian-kó hām lú-lo̍k (奶酪). Methanethiol sī tì-sú kháu-tshàu hām tn̂g-uī khì (pàng-phuì) tíng-tíng khì-bī ê huà-ha̍p bu̍t tsi-it. Methane-thiol sī siōng kán-tan ê thiol, ū-tang-sî-á sok-siá tsò MeSH. Methanethiol tsiânn-kín to̍h-hué.