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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Diss Factsheets
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EC number: 200-822-1 | CAS number: 74-93-1
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
- Melting point / freezing point
- Boiling point
- Density
- Particle size distribution (Granulometry)
- Vapour pressure
- Partition coefficient
- Water solubility
- Solubility in organic solvents / fat solubility
- Surface tension
- Flash point
- Auto flammability
- Flammability
- Explosiveness
- Oxidising properties
- Oxidation reduction potential
- Stability in organic solvents and identity of relevant degradation products
- Storage stability and reactivity towards container material
- Stability: thermal, sunlight, metals
- pH
- Dissociation constant
- Viscosity
- Additional physico-chemical information
- Additional physico-chemical properties of nanomaterials
- Nanomaterial agglomeration / aggregation
- Nanomaterial crystalline phase
- Nanomaterial crystallite and grain size
- Nanomaterial aspect ratio / shape
- Nanomaterial specific surface area
- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
- Nanomaterial radical formation potential
- Nanomaterial catalytic activity
- Endpoint summary
- Stability
- Biodegradation
- Bioaccumulation
- Transport and distribution
- Environmental data
- Additional information on environmental fate and behaviour
- Ecotoxicological Summary
- Aquatic toxicity
- Endpoint summary
- Short-term toxicity to fish
- Long-term toxicity to fish
- Short-term toxicity to aquatic invertebrates
- Long-term toxicity to aquatic invertebrates
- Toxicity to aquatic algae and cyanobacteria
- Toxicity to aquatic plants other than algae
- Toxicity to microorganisms
- Endocrine disrupter testing in aquatic vertebrates – in vivo
- Toxicity to other aquatic organisms
- Sediment toxicity
- Terrestrial toxicity
- Biological effects monitoring
- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
- Irritation / corrosion
- Sensitisation
- Repeated dose toxicity
- Genetic toxicity
- Carcinogenicity
- Toxicity to reproduction
- Specific investigations
- Exposure related observations in humans
- Toxic effects on livestock and pets
- Additional toxicological data
Guidance on Safe Use
Administrative data
First-aid measures
General advice:
Take off immediately all contaminated clothing
Inhalation: Move to fresh air. Oxygen or artificial respiration if needed. Keep under medical surveillance. In case of problems : Hospitalise.
Skin contact: Wash immediately, abundantly and thoroughly with water. Frostbite : treat as thermal burns
Eye contact: Wash immediately, abundantly and thoroughly with water. If irritation persists, consult an ophthalmologist.
Protection of first-aiders: In case of insufficient ventilation, wear suitable respiratory equipment.
Fire-fighting measures
Suitable extinguishing media: Carbon dioxide (CO2), Dry powder
Unsuitable extinguishing media: Foam
Specific hazards: Extremely flammable, Possible re-ignition of vapours from a distance, Thermal decomposition giving flammable and toxic products, Hydrogen sulphide, Sulphur oxides, Carbon oxides
Specific methods: Cool containers / tanks with water spray. Prohibit all sources of sparks and ignition - Do not smoke.
Special protective actions for fire-fighters: Wear self-contained breathing apparatus and protective suit.
Accidental release measures
Personal precautions, protective equipment and emergency procedures:
Prohibit all sources of sparks and ignition - Do not smoke. Avoid contact with the skin and the eyes. Prohibit inhalation of vapours
Evacuate non-essential staff and those not equipped with individual protection apparatus. Use personal protective equipment.
In case of leak, wear a self-contained breathing apparatus If possible position the leaking point uppermost If safe to do so, plug or seal off leak
Environmental precautions:
Do not release into the environment Pump into a labelled inert emergency tank.
Methods and materials for containment and cleaning up: Dam up with sand or inert earth (do not use combustible materials).
Recovery: Pump into a labelled inert emergency tank
Elimination: Destroy product by oxidation with dilute solutions of : Hydrogen peroxide sodium hypochlorite or Destroy the product by incineration (in accordance with local and national regulations).
Handling and storage
Precautions for safe handling:
Storage and handling precautions applicable to products: Liquefied gas extremely flammable forming explosive mixtures with air , toxic, dangerous for the environment Provide appropriate exhaust ventilation at machinery. Provide showers, eye-baths. Provide self-contained breathing apparatus nearby. Well ventilate empty vats and tanks before entering.
Safe handling advice: Prohibit all sources of sparks and ignition - Do not smoke. Avoid the accumulation of gas at the lowest points. Take precautionary measures against static discharges. Do not use air for transfers. Open drum carefully as content may be under pressure. Keep well away from naked flames
Hygiene measures: Avoid contact with the skin and the eyes. Prohibit inhalation of vapours Smoking, eating and drinking should be prohibited in the application area.Wash hands after handling.Remove contaminated clothing and protective equipment before entering eating areas.
Conditions for safe storage, including any incompatibilities: Keep containers tightly closed in a cool, well-ventilated place. Store away from heat and ignition sources. Provide a catch-tank in a bunded area Provide electrical earthing of equipment and electrical equipment usable in explosive atmospheres.Do not store above: 50 °C
Incompatible products: Acids, Bases, Mercurous oxide, Strong oxidizing agents
Packaging material:
Recommended: Ordinary steel, Stainless steel
Joints : polyethylene, Rilsan ®, polytetrafluoroethylene (PTFE)
To be avoided: Copper and copper alloys, Iron (non passified)
Transport information
Land transport (UN RTDG/ADR/RID)
- UN number:
- UN 1064
Hazard N° 263
Shipping information
- Proper shipping name and description:
- METHYL MERCAPTAN
- Language:
- English
- Labels:
- 2.3 (2.1)
SpecialProvisionsopen allclose all
Inland waterway transport (UN RTDG/ADN(R))
- UN number:
- 1064
Shipping information
- Proper shipping name and description:
- METHYL MERCAPTAN
- Language:
- English
- Labels:
- 2.3 (2.1)
Remarksopen allclose all
Marine transport (UN RTDG/IMDG)
- UN number:
- 1064
Shipping information
- Proper shipping name and description:
- METHYL MERCAPTAN
- Labels:
- 2.3 (2.1)
- Marine pollutant
Remarksopen allclose all
Air transport (UN RTDG/ICAO/IATA)
- UN number:
- 1064
Shipping information
- Proper shipping name and description:
- METHYL MERCAPTAN
Special provisions / remarks
- Remarks:
- Transport prohibited
SpecialProvisionsopen allclose all
Exposure controls / personal protection
CONTROL PARAMETERS:
Exposure Limit Values
Methanethiol
Source Date Value type Value(ppm) Value(mg/m3) Remarks
INRS (FR) 01 2008 VME 0,5 1 Indicative limit (VL)
ACGIH (US) 2007 TWA 0,5 – –
Methanol
Source Date Value type Value(ppm) Value(mg/m3) Remarks
INRS (FR) 01 2008 VME 200 260 Regulatory binding (VRC)
INRS (FR) 01 2008 SKIN_DES – – Can be absorbed through the skin.
INRS (FR) 01 2008 VLE 1.000 1.300 Regulatory binding (VRC)
ACGIH (US) 2007 TWA 200 – –
ACGIH (US) 2007 STEL 250 – –
ACGIH (US) 2007 SKIN_DES – – Can be absorbed through the skin.
For monitoring procedures refer to for instance to the American "Occupational Safety and Health Administration" Manual of Analytical Methods (OSHA 26).
Personal protective equipment:
Respiratory protection: Low concentrations or short activity: Self contained Breathing Apparatus
High concentrations or prolonged activity: On line apparatus
Hand protection: Splash contact, intermittent and prolonged : Gloves nitrile rubber Glove thickness: 0,75 mm
Eye protection: Safety glasses
Skin and body protection: At the workplace: Combination with delayed penetration
Intervention at incident: Combination with delayed penetration - anti-acid suit
This substance is handled under Strictly Controlled Conditions in accordance with REACH regulation Article 17(3) for on-site isolated intermediates and, in case the substance is transported to other sites for further processing, the substance should be handled at these sites under the Strictly Controlled Conditions as specified in REACH regulation Article 18(4).
Stability and reactivity
Conditions to avoid:
Keep away from heat and sources of ignition.
Do not store above: 50 °C
Materials to avoid: Strong oxidizing agents, Hydrogen peroxide, Nitric acid, Hypochlorites,
Reacts violently with : Acids, Bases, Mercurous oxide
Thermal decomposition: > 540 °C
Hazardous decomposition products:
Thermal decomposition giving flammable and toxic products, Hydrogen sulphide,
Formation of toxic products through combustion:, Sulphur oxides, Carbon oxides
Disposal considerations
Disposal of product:
Destroy product by oxidation with dilute solutions of : sodium hypochlorite Hydrogen peroxide or Destroy the product by incineration (in accordance with local and national regulations).
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.