RISCTOX

RISCTOX Database

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Identification

Name:
methanethiol
Synonyms:
  • METILMERCAPTANO
  • MERCAPTANO DE METILO
CAS:
74-93-1
EC/EINECS:
200-822-1
Molecular Formula:
CH4S
International Chemical Safety Card (ICSC):
0299

Black list

Substances particularly hazardous to the environment or health

CLASSIFICATION AND LABELLING (Regulation 1272/2008)

Symbols

  • GHS02

    Flammable gases

  • GHS04

    Gases under pressure

  • GHS06

    Acute toxicity (oral, dermal, inhalation)

  • GHS09

    Hazardous to the aquatic environment

H Phrases

  • H220 : Extremely flammable gas

    Flam. Gas (Cat. 1) : Flammable gas

  • H???

    Press. Gas : Gases under pressure

  • H331 : Toxic if inhaled

    Acute Tox. (Cat. 3 *) : Acute toxicity

  • H400 : Very toxic to aquatic life

    Aquatic Acute (Cat. 1) : Hazardous to the aquatic environment

  • H410 : Very toxic to aquatic life with long lasting effects

    Aquatic Chronic (Cat. 1) : Hazardous to the aquatic environment

Notes

  • R.1272-Note U

Specific health risks

Occupational Exposure Limits (OEL) ?

Daily exposure limit values (VLA-ED) published by the Spanish National Institute of Safety and Health at Work (INSST). They represent the average concentration of a chemical agent in the worker's breathing zone, measured or calculated in a time-weighted manner for an 8-hour daily working period.

OEL Data
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Specific environmental risks

Hazardous water substances (Germany) ?

Substances classified with chronic aquatic toxicity under the CLP Regulation (H410–H413 phrases, Aquatic Chronic categories 1 to 4). They pose a long-term hazard to aquatic organisms, even at low concentrations and through prolonged exposure.

MMA Classification
3
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Atmospheric emissions ?

Substances subject to atmospheric emission limitations under the Industrial Emissions Directive (2010/75/EU) and its Spanish transposition. Includes pollutants regulated in industrial installation emission permits and best available technique reference documents (BAT/BREF).

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Environmental regulations

Major accident hazards (Seveso) ?

Hazardous substances listed in Annex I of the Seveso III Directive (Directive 2012/18/EU), transposed in Spain by Royal Decree 840/2015. Their presence in industrial establishments in quantities equal to or above established thresholds triggers obligations to implement major accident risk control measures.

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