Registration Dossier

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 (ADR/RID)

UN number:
UN 1064
Hazard N° 263
Proper shipping name and description:
METHYL MERCAPTAN
Language:
English
Class:
2
Classification code:
2TF
Labels:
2.3 (2.1)
SpecialProvisionsopen allclose all

Inland waterway transport (ADN(R))

UN number:
1064
Proper shipping name and description:
METHYL MERCAPTAN
Language:
English
Class:
2
Classification code:
2TF
Labels:
2.3 (2.1)
Remarksopen allclose all

Marine transport (IMDG)

UN number:
1064
Proper shipping name and description:
METHYL MERCAPTAN
Class:
2.3
EmS code:
F-D, S-U
Labels:
2.3 (2.1)
Marine pollutant
Remarksopen allclose all

Air transport ICAO/IATA

UN number:
1064
Proper shipping name and description:
METHYL MERCAPTAN
Class:
2.3
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).