2,2-bis(methylthio)propane

Guidance on Safe Use

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 off immediately with soap and plenty of water.

Eye contact:

Wash immediately, abundantly and thoroughly with water. Consult an ophthalmologist.

Ingestion:

If swallowed, DO NOT induce vomiting. Hospitalise.

Fire-fighting measures

Suitable extinguishing media: Dry powder, Carbon dioxide (CO2), Water spray

Special hazards arising from the substance or mixture:

Flammable liquid.

Thermal decomposition giving flammable and toxic products :, Hydrogen sulphide, Sulphur oxides, Carbon oxides

Advice for firefighters:

Specific methods:

Cool containers / tanks with water spray.

Special protective actions for fire-fighters:

Wear self-contained breathing apparatus and protective suit.

Accidental release measures

Personal precautions, protective equipment and emergency procedures:

Avoid contact with the skin and the eyes. Prohibit inhalation of vapours. Use personal protective equipment. In case of insufficient ventilation,

wear suitable respiratory equipment Evacuate non-essential staff and those not equipped with individual protection apparatus.

Environmental precautions:

Do not release into the environment. Do not let product enter drains. Dam up with sand or inert earth (do not use combustible materials).

Methods and materials for containment and cleaning up:

Recovery:

Pump into a labelled inert emergency tank. Small quantities : Soak up with inert absorbent material (Vermiculite, Clean sand).

Elimination:

Destroy the product by incineration (in accordance with local and national regulations).

Handling and storage

Precautions for safe handling:

Technical measures/Precautions:

Storage and handling precautions applicable to products: Liquid. Highly flammable With vapours explosive in air. Irritant. 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.

Keep well away from naked flames. Prohibit all sources of sparks and ignition - Do not smoke. Take precautionary measures against static

discharges. Open drum carefully as content may be under pressure.

Hygiene measures:

Avoid contact with the skin and the eyes. Prohibit inhalation of vapours. When using do not eat, drink or smoke.

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 impermeable floor. Provide electrical earthing of equipment and electrical equipment usable in explosive atmospheres.

Incompatible products:

Strong oxidizing agents, Strong acids

Packaging material:

Recommended: Stainless steel 316 L, Stainless steel 304 L, Polytetrafluoroethylene (PTFE)

To be avoided: Polystyrene, Polypropylene, Polyethylene

Transport information

Land transport (UN RTDG/ADR/RID)

UN number:

1993

Shipping information

Proper shipping name and description:

FLAMMABLE LIQUID,
N.O.S.(DIMETHYLTHIOPROPANE)

Chemical name:

(DIMETHYLTHIOPROPANE)

Language:

English

Labels:

3

SpecialProvisions

Inland waterway transport (UN RTDG/ADN(R))

UN number:

1993

Shipping information

Proper shipping name and description:

FLAMMABLE LIQUID,
N.O.S.(DIMETHYLTHIOPROPANE)

Chemical name:

(DIMETHYLTHIOPROPANE)

Labels:

3

Remarks

Marine transport (UN RTDG/IMDG)

UN number:

1993

Shipping information

Proper shipping name and description:

FLAMMABLE LIQUID,
N.O.S.(DIMETHYLTHIOPROPANE)

Chemical name:

DIMETHYLTHIOPROPANE

Labels:

3

Marine pollutant

Remarks

Air transport (UN RTDG/ICAO/IATA)

UN number:

1993

Shipping information

Proper shipping name and description:

Flammable liquid, n.o.s.
(DIMETHYLTHIOPROPANE)

Chemical name:

(DIMETHYLTHIOPROPANE)

Labels:

3

Remarks

SpecialProvisions

Exposure controls / personal protection

Control parameters:

Exposure Limit Values Acetone Source Date Value type Value (ppm) Value (mg/m3) Remarks

EU ELV 12 2009 TWA 500 1.210 Indicative

INRS (FR) 01 2008 VLE (FR) 1.000 2.420 Regulatory binding (VRC)

INRS (FR) 01 2008 VME (FR) 500 1.210 Regulatory binding (VRC)

ACGIH (US) 2007 TWA 500 – –

ACGIH (US) 2007 STEL 750 – –

Methanethiol Source Date Value type Value (ppm)  Value (mg/m3) Remarks

INRS (FR) 01 2008 VME (FR) 0,5 1 Indicative limit (VL)

ACGIH (US) 2007 TWA 0,5 – –

Exposure controls:

General protective measures: Ensure sufficient air exchange and/or exhaust in work areas

Personal protective equipment:

Respiratory protection: Mask with specific cartridge (organic vapours) ( Respiratory protection complying with EN 141 )

Recommended Filter type: A2B2E2K2

Hand protection: Gloves

Protective gloves complying with EN 374.

Natural Rubber

Eye/face protection: Safety glasses

Skin and body protection: Protective suit

Stability and reactivity

Reactivity & Chemical stability:

The product is stable at normal handling and storage temperatures.

Possibility of hazardous reactions:None known.

Conditions to avoid:

Keep away from heat and sources of ignition. To avoid thermal decomposition, do not overheat.

Incompatible materials to avoid:

Strong oxidizing agents, Strong acids

Hazardous decomposition products:

Thermal decomposition:

Decomposition temperature: > 250 °C

Thermal decomposition giving flammable and toxic products :, Hydrogen sulphide, Sulphur oxides, Carbon oxides

Disposal considerations

Disposal of product: Destroy the product by incineration (in accordance with local and national regulations).