Dichloro(methyl)(phenyl)silane

Guidance on Safe Use

First-aid measures

Description of first aid measures

General information:

Take persons to a safe place. Observe self-protection for first aid. Always seek medical advice in the event of contact with this

substance.

After contact with the eyes:

Rinse immediately with plenty of water for 10-15 minutes. Keep eyelids well open to rinse the whole eye surface and eyelids with

water. Seek medical advice immediately and clearly identify substance. Continue to bathe eyes during transport to medical

practitioner.

After contact with the skin:

Remove contaminated clothes at once. Wash off with plenty of water or water and soap immediately for 10-15 minutes. In serious

cases, use emergency shower immediately. Seek medical advice immediately and clearly identify substance.

After inhalation:

Keep the patient calm. If unconscious place in stable sideways position. Protect against loss of body heat. If breathing stops,

administer artificial respiration. Seek medical advice immediately and clearly identify substance.

After swallowing:

If conscious, give several small portions of water to drink. Do not induce vomiting. Seek medical advice immediately and clearly

identify substance.

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

After inhalation: treat as early as possible using cortisone spray. Medical checks necessary up to a latency period of at least 24

hours. In the event of 1st degree burns use corticoid-externa. In the case of 2nd degree burns, use symptomatic treatment. Risk

of intra-abdominal gas developing if swallowed. Risk of perforation of the stomach.

Fire-fighting measures

Extinguishing media

Suitable extinguishing media:

alcohol-resistant foam , carbon dioxide , dry sand . Application of foam will release at least initially significant amounts of

flammable and corrosive vapors. These vapors could be trapped under the foam blanket.

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. Exposure to combustion products may be a health hazard! Hazardous

combustion products: carbon oxides , silicon oxides , hydrogen chloride , incompletely burnt hydrocarbons , toxic and very toxic

fumes .

Advice for firefighters

Special protective equipment for fire fighting:

Use respiratory protection independent of recirculated air. Use tightly fitting chemical protection suit. Keep

unprotected persons away.

Accidental release measures

Personal precautions, protective equipment and emergency procedures

Secure the area. Wear personal protection equipment (see section 8). Task force: Use tightly fitting chemical protection suit. Keep unprotected persons away. Avoid contact with eyes and skin. Do not inhale gases/vapours/aerosols. Do not walk

through spilled material. Ensure adequate ventilation. If material is released indicate risk of slipping.

Environmental precautions

Prevent material from entering surface waters, drains or sewers and soil. Close leak if possible without risk. Contain any fluid that

runs out using suitable material (e.g. earth). Condense gasses/vapours/mists using a directed spray of water. Retain

contaminated water/extinguishing water. Dispose of in prescribed marked containers. Inform authorities if substance leaks into

surface waters, sewerage or ground.

Methods and material for containment and cleaning up

Do not flush away with water. For small amounts: Absorb with liquid, mainly acid binding material and dispose of according to

local/state/federal regulation. Cover larger quantities by near waterless foam and take up in container. Exhaust vapours. Clean up

with plenty of water.

Further information:

Exhaust vapours. Eliminate all sources of ignition. Consider explosion protection.

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

General information:

Avoid exposure by technical measures or personal protective equipment.

Precautions for safe handling:

Ensure adequate ventilation. Must be syphoned off in situ. Spilled substance increases risk of slipping. Avoid formation of

aerosols. In case of aerosol formation special protective measures are required (exhausting by suction, respiratory protection).

Keep away from incompatible substances.

Precautions against fire and explosion:

Flammable vapors may accumulate and form explosive mixtures with air in containers, process vessels, including partial, empty

and uncleaned containers and vessels, or other enclosed spaces. Vapours heavier than air, therefore inflammable gas mixture

may form mainly near floor. Keep away from sources of ignition and do not smoke. Take precautionary measures against

electrostatic charging. Cool endangered containers with water.

Conditions for safe storage, including any incompatibilities

Conditions for storage rooms and vessels:

Store under protective gas.

Advice for storage of incompatible materials:

Keep away from incompatible substances. Observe local/state/federal regulations.

Further information for storage:

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

Transport information

Land transport (UN RTDG/ADR/RID)

UN number:

2437

Shipping

SpecialProvisions

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

UN number:

2437

Shipping

Remarks

Marine transport (UN RTDG/IMDG)

UN number:

2437

Shipping information

Proper shipping name and description:

Methylphenyldichlorsilan

Remarks

Air transport (UN RTDG/ICAO/IATA)

UN number:

2437

Shipping information

Proper shipping name and description:

Methylphenyldichlorsilan

Remarks

SpecialProvisions

Exposure controls / personal protection

Control parameters

Maximum airborne concentrations at the workplace:

CAS No. 7647-01-0, Hydrogen chloride, AGW 3,0 mg/m3; 2,0 ppm.

CAS No. 7647-01-0, Hydrogen chloride, EU 8,0 mg/m3; 5,0 ppm.

Hydrogen chloride (CAS-Nr. 7647-01-0): Refer to Technical Rules for Hazardous Substances "TRGS 900" for more details on the

German AGW.

hydrogen chloride (CAS no. 7647-01-1): the short-time exposure value of the EU threshold is 15 mg/m3 (= 10 ppm).

Derived No-Effect Level (DNEL):

Phenylmethyldichlorosilane

Area of use: Value:

Worker; dermal; systemic (long term) 1 mg/kg/day

Worker; by inhalation; systemic (long term) 1,8 mg/m³

Worker; by inhalation; local (long term) local (acute) 21 mg/m³

Consumer; oral; systemic (long term) systemic (acute) 0,69 mg/kg/day

Predicted No Effect Concentration (PNEC):

Phenylmethyldichlorosilane

Area of use: Value:

freshwater 0,44 mg/l

The value was derived for the hydrolysis product .

marine water 0,044 mg/l

The value was derived for the hydrolysis product .

Intermittent release 4,4 mg/l

The value was derived for the hydrolysis product .

Sediment (freshwater) 0,61 mg/kg wet weight

The value was derived for the hydrolysis product .

Sediment (marine water) 0,061 mg/kg wet weight

The value was derived for the hydrolysis product .

Soil 0,26 mg/kg wet weight

The value was derived for the hydrolysis product .

sewage treatment plant >= 100 mg/l

Exposure controls

Exposure in the work place limited and controlled

General protection and hygiene measures:

Avoid exposure - obtain special instructions before use. Observe standard industrial hygiene practices for the handling of

chemical substances. Avoid contact with eyes and skin. Do not inhale gases/vapours/aerosols. Use with adequate ventilation.

Preventive skin protection recommended. Remove contaminated, soaked clothing immediately. Clean work areas regularly.

Provide emergency shower and eye-bath. Do not eat, drink or smoke when handling. Keep away from foodstuff, drink and

feedingstuff.

Personal protection equipment:

Respiratory protection

Use respiratory protection where there is insufficient ventilation (e.g. when working with the product in closed rooms without

exhaust ventilation). Suitable respiratory equipment: Respirator with a full face mask, according to acknowledged standards such

as EN 136.

Recommended Filter type: Combined filter type ABEK-P2 (certain inorganic, organic and acidic gases and vapors;

ammonia/amines; particles), according to acknowledged standards such as EN 14387

If inhalative exposure above the occupational exposure limit cannot be excluded, adequate respiratory protection equipment must

be used. Wear a self-contained, positive-pressure respirator with full facepiece and a protection factor (APF) of 2000, according to

acknowledged standards such as EN 137, EN 14593 or EN 14594.

Observe the equipment manufacturer's information and wear time limits for respirators.

Eye protection

tight fitting protective goggles required . Where there is risk of splashing: protective shield . Provide work station with eye bathing

equipment. In case of long or strong exposure: look to respiratory protection .

Hand protection

Gloves are required at all times when handling the material. Due to the substance‘s properties, contaminated gloves must be

immediately decontaminated and changed.

Recommended glove types: Protective gloves made of butyl rubber

thickness of the material: > 0,7 mm

Breakthrough time: 60 - 120 min

Recommended glove types: Protective gloves made of nitrile rubber

thickness of the material: > 0,4 mm

Breakthrough time: 30 - 60 min

Please observe the instructions regarding permeability and breakthrough time which are provided by the supplier of the gloves.

Also take into consideration the specific local conditions under which the product is used, such as the danger of cuts, abrasion,

and the contact time. Note that, due to the numerous external influences (such as temperature), a chemically resistant protective

glove in daily use may have a service life that is considerably shorter than the measured break through time.

Skin protection

If handled uncovered: Chemical protective clothing, full-body liquid-tight protection if necessary. Please observe the instructions

regarding permeability time which are provided by the supplier. Immediately decontaminate and change contaminated protective

clothing.

Exposure to the environment limited and controlled

Prevent material from entering surface waters, drains or sewers and soil. Normally neutralisation is required before waste water is

introduced into purification plants. Do not introduce large amounts into purification plants.

Further information for system design and engineering measures

Observe regulations for protection against explosion. Use only in closed systems.

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. Violent reactions are

possible with various chemicals.

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

Conditions to avoid

moisture , Heat, open flames, and other sources of ignition.

Incompatible materials

proton-active substances . Reacts violently with: water , basic substances , acids , alcohols and ketones/aldehydes . Reaction

causes the formation of: hydrogen chloride and heat .

Hazardous decomposition products

In contact with incompatible substances this material may quickly generate a large volume of hydrogen chloride gas.

Disposal considerations

Waste treatment methods

Material

Recommendation:

Ensure special chem./phys. treatment after discussion with the supplier. Material that cannot be used, reprocessed or recycled

should be disposed of in accordance with Federal, State, and local regulations at an approved facility. Depending on the

regulations, waste treatment methods may include, e.g., landfill or incineration.

Uncleaned packaging

Recommendation:

Completely discharge containers (no tear drops, no powder rest, scraped carefully). Containers may be recycled or re-used.

Observe local/state/federal regulations. Uncleaned packaging should be treated with the same precautions as the material.

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.