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methanethiol

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Origin: China

Cas No: 74-93-1

Specification: 99%min

Min order Quantity: 1 /kg

Supply Ability: 50 mt/month

Lead time: 7 days for OEM, 3 days for ready goods

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CAS No.: 74-93-1 Formula: CH4S Molecular Weight: 48.10750

Description

Methanethiol (also known as methyl mercaptan) is an organosulfur compound with the chemical formula CH 3SH. It is a colorless gas with a distinctive putrid smell. It is a natural substance found in the blood and brain of humans and other animals as well as plant tissues. It is disposed of through animal feces. It occurs naturally in certain foods, such as some nuts and cheese. It is also one of the main compounds responsible for bad breath and the smell of flatus. Methanethiol is classified as a thiol and is sometimes abbreviated as MeSH. It is very flammable.

Basic Info

Chemical Name	methanethiol
Synonyms	METHYL MERCAPTAN; Methanthiol; MERCAPTOMETHYLE; Methaanthiol; methylmercaptan; Methanethiol; FEMA 2716; methylenethiol; methyl mercaptane; CH3SH; THIOMETHANOL; MERCAPTAN C1; 4Q 1998; Methvtiolo;
CAS No.	74-93-1
Molecular Formula	CH4S
Molecular Weight	48.10750
PSA	38.80000
LogP	0.54600

Properties

Appearance & Physical State	colourless gas with a garlic-like or rotten cabbage-like smell
Density	0.8665
Boiling Point	6ºC
Melting Point	2ºC
Flash Point	<71ºC
Stability	Stable. Highly flammable - note low flash point. Reacts vigorously or explosively with a wide variety of materials - consult a full MSDS data sheet before using. Incompatible with strong oxidizing agents, alkali and alkaline earth metals, epoxides, hydrazi
Vapor Density	1.66 (vs air)
Vapor Pressure	1536 mm Hg ( 20 °C)

Safety Info

RTECS	PB4375000
Hazard Class	2.3
Safety Statements	S16; S25; S60; S61
HS Code	2931909090
WGK Germany	3
RIDADR	UN 2037 2.3
Risk Statements	R12
Hazard Codes	F+; T; N
Caution Statement	P210; P261; P273; P311; P410 + P403; P501
Signal Word	Danger
Symbol	GHS02, GHS06, GHS09
Hazard Declaration	H220; H280; H331; H410

Synthesis Route

Dimethyl trisulfide+potassium cyanide→methanethiol+potassium thiocyanate
acetic acid-(β,β'-bis-methylsulfanyl-isopropyl ester)→methanethiol+1,3-bis(methylsulfanyl)propan-2-ol
acetic acid-(2,3-bis-methylsulfanyl-propyl ester)→methanethiol+2,3-bis(methylsulfanyl)propan-1-ol

Precursor

Dimethyl sulfide
S-methyl N-methylcarbamothioate
S-methyl N-ethylcarbamothioate
carbon monoxide

Downstream Product

3-CHLOROTHIOANISOLE
METHYL PROPYL SULFIDE
trimethyl(methylsulfanyl)silane
1,3-Bis(methylthio)benzene

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