Dimethyl disulphide

Guidance on Safe Use

First-aid measures

Description of necessary first-aid measures :

General advice: Take off immediately all contaminated clothing.

Move to fresh air. Oxygen or artificial respiration if needed. Keep under medical surveillance. In case of persistent problems : Hospitalise.

Skin contact : Wash off immediately with soap and plenty of water. If significant contact: Keep under medical surveillance. Hospitalise

Eye contact: Wash immediately, abundantly and thoroughly with water. If irritation persists, consult an ophthalmologist.

Ingestion: Do not induce vomiting, rinse mouth and lips with plenty of water if the subject is conscious, then hospitalize.

Protection of first-aiders: In case of insufficient ventilation, wear suitable respiratory equipment.

Fire-fighting measures

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

Specific hazards: Flammable liquid,

Thermal decomposition giving flammable and toxic products, Hydrogen sulphide, Methylmercaptan

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:

Prohibit contact with skin and eyes and 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. Prohibit all sources of sparks and ignition - Do not smoke.

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 Absorb the remainder with an inert absorbent material. Rinse with water and recover water for later processing.

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: Technical measures/Precautions:

Storage and handling precautions applicable to products: Liquid. Flammable. With vapours explosive in air. Irritant. Sensitizing. Harmful.

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. Provide electrical earthing of equipment.

Safe handling advice: 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: Prohibit contact with the skin and the eyes. Avoid inhalation of vapours. Remove and wash contaminated clothing before re-use.

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 impermeable floor. Provide a catch-tank in a bunded area. Provide electrical earthing of equipment and electrical equipment usable in explosive atmospheres.

Incompatible products: Strong oxidizing agents

Packaging material: Recommended: Lined metallic drums., Stainless steel, Joints : polyethylene, Rilsan ®

To be avoided: Rubber, Plastic materials

Transport information

Land transport (UN RTDG/ADR/RID)

UN number:

2381

Shipping

Labels:

3

SpecialProvisions

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

UN number:

2381

Shipping

Labels:

3

Remarks

Marine transport (UN RTDG/IMDG)

UN number:

2381

Shipping information

Proper shipping name and description:

DIMETHYL DISULPHIDE

Chemical name:

DIMETHYL DISULPHIDE

Labels:

3

Marine pollutant

Remarks

Air transport (UN RTDG/ICAO/IATA)

UN number:

Not permit

Shipping

Remarks

SpecialProvisions

Exposure controls / personal protection

CONTROL PARAMETERS:

Exposure Limit Values

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

ACGIH (US)       2007       TWA            0,5       –       –

ACGIH (US)       2007       SKIN_DES       –       –        Can be absorbed through the skin.

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

Personal protective equipment:

Respiratory protection: Low concentrations or short activity: ( Respiratory protection complying with EN 141 )

Recommended Filter type: A2

High concentrations or prolonged activity: On line apparatus

Hand protection: Splash contact, intermittent and prolonged Gloves nitrile rubber Glove thickness: 0,75 mm

Eye/face protection: Safety glasses with side-shields

Skin and body protection: At the workplace : Combination with delayed penetration

Intervention at incident: anti-acid suit

Stability and reactivity

Reactivity & Stability:       The product is stable at ambient temperature

Conditions to avoid: Heat, Source of ignition.

To avoid thermal decomposition, do not overheat.

Materials to avoid: Hydrogen peroxide, Strong oxidizing agents, Nitric acid, Hypochlorites

Thermal decomposition:

Decomposition temperature:  390 °C

Thermal decomposition giving flammable and toxic products : Hydrogen sulphide,

Thermal decomposition giving flammable and harmful products: Methylmercaptan, Dimethylsulphide

Disposal considerations

Waste treatment:

Disposal of product: 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).