Diethoxy(methyl)silane

Guidance on Safe Use

First-aid measures

Description of first aid measures

General information:

In case of accident or if you feel unwell seek medical advice (show label or SDS where possible).

After contact with the eyes:

Rinse immediately with plenty of water. Seek medical advice in case of continuous irritation.

After contact with the skin:

Wash with plenty of water or water and soap. In the event of a visible skin change or other complaints, seek medical advice (show

label or SDS where possible).

After inhalation:

Provide fresh air.

After swallowing:

Give several small portions of water to drink. Do not induce vomiting.

Most important symptoms and effects, both acute and delayed

Any relevant information can be found in other parts of this section.

Indication of any immediate medical attention and special treatment needed

Further toxicology information must be observed.

Fire-fighting measures

Extinguishing media

Suitable extinguishing media:

alcohol-resistant foam , carbon dioxide , sand . Hydrogen gas can become trapped under foam blankets, so sources of ignition

must be eliminated during the clean-up and recovery process.

Extinguishing media which must not be used for safety reasons:

water , extinguishing powder , halones .

Special hazards arising from the substance or mixture

Risk of hazardous gasses or fumes in the event of fire. Do not allow extinguishing water to enter sewerage, the soil or inshore

waters.

Advice for firefighters

Special protective equipment for fire fighting:

Use respiratory protection independent of recirculated air.

Accidental release measures

Personal precautions, protective equipment and emergency procedures

Secure the area. Wear personal protection equipment. Keep unprotected persons away. Avoid contact with eyes

and skin. Avoid inhaling mists and vapours. If material is released indicate risk of slipping.

Environmental precautions

Prevent material from entering surface waters, drains or sewers and soil. Contain any fluid that runs out using suitable material

(e.g. earth). If safe to do so, stop the leak at its source.

Methods and material for containment and cleaning up

For small amounts: Absorb with a neutral (non-acidic / non-basic) liquid binding material such as diatomaceous earth and dispose

of according to government regulations. For large amounts: Liquids may be recovered using suction devices or pumps. Use only

air driven or properly rated electrical eqiupment. Use vented recovery containers. Clean any slippery coating that remains using a

detergent / soap solution or another biodegradable cleaner. Apply sand or other inert granular material to improve traction.

Further information:

Eliminate all sources of ignition. Material designated for disposal must be segregated from incompatible substances or materials.

Do not blend contaminated material with uncontaminated material.

Reference to other sections

Relevant information in other sections has to be considered. This applies in particular for information given on personal protective

equipment and on disposal.

Handling and storage

Precautions for safe handling

Precautions for safe handling:

Use caution when opening any bulging container. Wear all appropriate protective equipment. Work in an open area away from

other materials, operations, and sources of ignition. Open slowly to allow a gradual release of pressure. Ensure adequate

ventilation. Keep container closed when not in use. Keep away from incompatible substances in accordance with section 10.

Where possible, inert process equipment and blanket vessels, tanks and containers with nitrogen to reduce the available oxygen

level. Contact WACKER for additional publications on the safe Handling of SiH Products.

Precautions against fire and explosion:

Product can release hydrogen. In partly emptied containers formation of explosive mixtures is possible. Keep away from sources

of ignition and do not smoke. Keep away from open flames, heat and sparks. Take precautionary measures against electrostatic

charging.

Conditions for safe storage, including any incompatibilities

Conditions for storage rooms and vessels:

none known

Advice for storage of incompatible materials:

Do not store with: basic substances (e.g. alkalis, ammonia, amines) , oxidizing agents , strong acids .

Further information for storage:

Protect against moisture. Store in a dry and cool place. Store container in a well ventilated place.

Transport information

Land transport (UN RTDG/ADR/RID)

UN number:

1993

Shipping

Shipping 1

Proper shipping name and description:

Entzündbarer flüssiger Stoff, n.a.g. (Diethoxymethylsilan)

Language:

German

Shipping 2

Proper shipping name and description:

Flammable liquid, n.o.s (Diethoxymethylsilane)

Language:

English

SpecialProvisions

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

UN number:

1993

Shipping

Shipping 1

Proper shipping name and description:

Entzündbarer flüssiger Stoff, n.a.g. (Diethoxymethylsilan)

Language:

German

Shipping 2

Proper shipping name and description:

Flammable liquid, n.o.s (Diethoxymethylsilane)

Language:

English

Remarks

Marine transport (UN RTDG/IMDG)

UN number:

1993

Shipping information

Proper shipping name and description:

Flammable liquid, n.o.s (Diethoxymethylsilane)

Remarks

Air transport (UN RTDG/ICAO/IATA)

UN number:

1993

Shipping information

Proper shipping name and description:

Flammable liquid, n.o.s (Diethoxymethylsilane)

Remarks

Additional transport information

Additional information

Special provisions / remarks / other:

Bulk transport in tankers is not intended.

Exposure controls / personal protection

Control parameters

Maximum airborne concentrations at the workplace:

CAS No.       Material                     Type       mg/m3       ppm

64-17-5       Ethanol                     AGW       960,0       500,0

      Aerosol - inhalable fraction              10,0

Ethanol (CAS no. 64-17-5): Refer to Technical Rules for Hazardous Substances "TRGS 900" for more details on the German

AGW.

The aerosol limit specified is a recommendation should aerosol be formed during processing.

Exposure controls

Exposure in the work place limited and controlled

General protection and hygiene measures:

Do not eat, drink or smoke when handling. Wash hands at the end of work and before eating.

Personal protection equipment:

Respiratory protection

In case of long or strong exposure: gas mask filter ABEK .

Eye protection

protective goggles .

Hand protection

Recommendation: Protective gloves made of butyl rubber . Gloves suitable for up to 60 minutes' use.

Exposure to the environment limited and controlled

Prevent material from entering surface waters and soil. Do not introduce large amounts into purification plants.

Stability and reactivity

Reactivity; Chemical stability; Possibility of hazardous reactions

If stored and handled in accordance with standard industrial practices no hazardous reactions are known.

Relevant information can possibly be found in other parts of this section.

Conditions to avoid

moisture . Heat, open flames, and other sources of ignition. Contact with contaminated piping or vessels or with corroded and

rusty containers can increase the rate of hydrogen formation.

Incompatible materials

Reacts with basic substances or acids in the presence of: water or alcohols . Reaction causes the formation of: hydrogen and

ethanol .

Hazardous decomposition products

hydrogen . Measurements have shown the formation of small amounts of formaldehyde at temperatures above about 150 °C (302

°F) through oxidation.

Disposal considerations

Waste treatment methods

Material

Recommendation:

Material that cannot be used or chemically reprocessed should be disposed of at an approved facility in accordance with any

applicable governmental regulations. Material designated for disposal must be segregated from incompatible substances or

materials. Wastes of this material should not be mixed with other wastes. Provide measures such as vented

bungs to ensure pressure relief in the waste containers.

Uncleaned packaging

Recommendation:

Containers may contain hazardous quantities of hydrogen gas. Uncleaned containers should not be reused to hold another

material due to the potential for reaction between residual product and incompatible materials. Uncleaned packaging should be

treated with the same precautions as the material. Containers should be completely emptied before recycling as specified in

government regulations.

Waste Disposal Legislation Ref.No.(EC)

It is not possible to determine a waste code for this product in accordance with the European Waste Catalogue (EWC) since it is

only possible to classify it according to how it is used by the customer. The waste code is to be determined within the EU in liaison

with the waste-disposal operator.