detectin-methyl-mercaptan-thumbnail

Methyl mercaptandetecting-methyl-mercaptan-factsheet

Formula: CH4S | CAS: 74-93-1

Detecting methyl mercaptan: Methyl mercaptan is highly irritant when it contacts moist tissues such as the eyes, skin, and upper respiratory tract. It can also induce headache, dizziness, nausea, vomiting, coma, and death. Ingestion of methyl mercaptan is unlikely since it is a gas at ambient temperatures.

Detecting Methyl mercaptan, routes of exposure

Inhalation
Inhalation is the major route of exposure to methyl mercaptan. An odour threshold of 0.002 ppm has been reported for methyl mercaptan, but olfactory fatigue may occur and thus, it may not provide adequate warning of hazardous concentrations. Vapours of liquified methyl mercaptan gas are heavier than air and spread along the ground. Exposure in poorly ventilated, enclosed, or low-lying areas can result in asphyxiation.

Other routes of exposure come from Skin/Eye contact and Ingestion.

At room temperature (above 43°F), methyl mercaptan is a colourless gas with an unpleasant odour described as rotten cabbage. It is slightly soluble in water. It is generally shipped as a liquified compressed gas. When heated to decomposition, it emits toxic fumes, such as sulfur dioxide, and flammable vapours. Methyl mercaptan should be stored in cool, well ventilated places. The main toxic effect of exposure to methyl mercaptan is irritation of the respiratory airway, skin, and eyes.
– Agency for Toxic Substances & Disease Registry

Why do we use methyl mercaptan?

Methyl mercaptan is mainly used to produce methionine, which is used as a dietary supplement for poultry and animal feed. Methyl mercaptan also is used in industrial applications as an intermediate in the production of pesticides, fungicides, plastics and animal feed additives. As an industrial intermediate, the chemical is reacted into something else or fully consumed to make the product.

Select another gas

Gas Factsheet

Everything you need to know about detecting methyl mercaptan

Our Gas Factsheets which is available to download below provides you with key information on the exposure limits and the locations of where potentially harmful gases can occur. We also share information on gas detection monitoring techniques and equipment that can help you manage gas detection in the workplace, for worker and site safety.

detecting-methyl-merceptan instrument-gas-factsheet

Download Gas Factsheet

Detecting Methyl mercaptan

Formula: CH4S | CAS: 74-93-1

Synonyms: methanethiol, mercaptomethane, methanethiol, methyl sulfhydrate

Specification Value/Information
Formula CH4S
CAS no. 74-93-1
Gas Response Factor, 11.7 eV 1
Gas Response Factor, 10.6 eV 0.7
Gas Response Factor, 10.0 eV 0.6
ppm per mg/m⁻³, (20 °C, 1 bar) 0.5
Molecular Weight, g/mole 48.1
Melting point, °C '-121
Boiling point, °C 6
Flash point, °C '-17.8 (aq)
Specification Value/Information
Upper Explosive Limit, % 21.8
Lower Explosive Limit, % 3.9
Density, g.cm⁻³ 0.9
Ionisation Energy, eV 9.44
EH40 TWA, ppm 0.5
EH40 TWA, mg.m⁻³ 1
NIOSH ceiling, ppm 0.5
NIOSH ceiling, mg.m⁻³ 1
NIOSH IDLH, ppm 150

Related Products

Cub 10.6 eV Personal VOC Gas Detector

Cub 10.6 eV personal VOC gas detector is worn within the breathing zone to detect volatile organic compounds, keeping you safe within your working environment.

Product Details
*** Falco Diffused – Fixed VOC Gas Detector ***

Falco Diffused, Fixed VOC Gas Detector is ideal for detecting VOCs and TACs in areas such as refineries and petrol chemical facilities.

Product Details
*** Falco Pumped – Fixed VOC Gas Monitor ***

Falco pumped instruments are ideal for detecting VOCs and TACs in difficult locations such as underground or in confined spaces.

Product Details
GasCheck G Handheld Helium Gas Leak Detector

Designed for the search and location of gas leaks, the GasCheck G handheld helium gas leak detector provides you with effective detection of almost any gas or gas mixture.

Product Details
GasClam 2 Continuous Ground Gas Detector

GasClam 2 continuous ground gas detector is a unique in-borehole gas monitoring system developed for the unattended collection of long-term gas data.

Product Details
Tiger Handheld VOC Gas Detector

The Tiger handheld VOC gas detector is a revolutionary portable PID instrument for rapid, accurate detection of volatile organic compounds (VOCs).

Product Details
Tiger LT Portable VOC Gas Detector

The Tiger LT portable VOC gas detector is an entry-level, portable instrument for fast, accurate detection of volatile organic compounds (VOCs).

Product Details
TVOC 2 Continuous VOC Gas Detector

TVOC 2 is a fixed, continuous VOC gas detector that accurately detects and measures Total Volatile Organic Compounds within industrial working environments.

Product Details

Download your Gas Factsheet

Simply complete the form below to obtain your Gas Factsheet on “Methyl Mercaptan”.

Which gas are you looking to detect?

or search in our gas table

Gas Search