Octachlorotrisilane

Guidance on Safe Use

First-aid measures

Description of first aid measures

Take off all contaminated clothing immediately.

Inhalation

If aerosol or mists are formed:

Possible discomfort: severe irritation of mucous lining (nose, throat, eyes), cough, sneezing, flow of tears

Move victims into fresh air.

If breathing difficulties occur:

Keep patient half sitting with upper body raised.

Call a physician immediately.

Skin contact

Wash off immediately with plenty of water.

Consult a physician.

Eye contact

With eye held open, thoroughly rinse immediately with plenty of water for at least 10 minutes.

Continue rinsing process with eye rinsing solution.

Protect unharmed eye.

Call ambulance. (Cue: caustic burn of the eyes)

Immediate further treatment in ophthalmic hospital/ ophthalmologist.

Continue rinsing eye until arrival at ophthalmic hospital.

Ingestion

Do NOT induce vomiting.

Only when patient fully conscious:

Have the mouth rinsed with water.

Have patient drink plenty of water in small sips.

Notify ambulance immediately (keyword: chemical burn).

Most important symptoms and effects, both acute and delayed

Symptoms

None known

Hazards

None known

Indication of any immediate medical attention and special treatment needed

Therapy as for chemical burn.

If substance has been swallowed:

Early endoscopy in order to assess mucosa lesions in the oesophagus and stomach which may appear.

If necessary, suck away leftover substance.

Fire-fighting measures

Extinguishing media

Suitable extinguishing media:       dry sand

Carbon dioxide (CO2)

foam

Unsuitable extinguishing media:       water

Special hazards arising from the substance or mixture

In the case of fire, the following hazardous smoke fumes may be produced: chlorine, hydrogen chloride.

Closed container may rupture if strongly heated.

In case of fire cool endangered containers with water.

Advice for firefighters

Water used to extinguish fire should not enter drainage systems, soil or stretches of water.

Ensure there are sufficient retaining facilities for water used to extinguish fire.

Fire residues and contaminated fire extinguishing water must be disposed of in accordance with local regulations.

In the case of fire, wear respiratory protective equipment independent of surrounding air and chemical protective suit.

Accidental release measures

Accidental release measures

Personal precautions, protective equipment and emergency procedures

Use personal protective equipment.

Ensure adequate ventilation.

Keep away from sources of ignition - No smoking.

Do not allow to enter drains (danger of explosion).

Environmental precautions

Do not allow entrance in sewage water, soil stretches of water, groundwater, drainage systems.

Cover over drainage system. Avoid penetration into drainage system or in rooms situated at a lower level because of danger of explosion.

Methods and material for containment and cleaning up

Take up with liquid-binding material (e.g. sand, universal binder, diatomaceous earth). Store used liquid binder closed in stable, labelled containers.

To be disposed of in compliance with existing regulations.

Unsuitable binder:       sawdust

Handling and storage

Precautions for safe handling

Provide good ventilation or extraction.

Ventilators required at emission site.

Handle under inert gas

Protect from moisture.

Confer with the manufacturer, request technical support.

Hydrolysis products are explosive, sensitive to impact, sensitive to friction.

Conditions for safe storage, including any incompatibilities

Advice on protection against fire and explosion

Take precautionary measures against static discharges.

Keep away from sources of ignition - No smoking.

When repairs of the production system are to be made (e.g. welding work), the section to be repaired must be essentially free of product.

Hydrolysates react with alkali agents to yield: hydrogen

Hydrolyses on contact with water.

Formation of hydrogen

Storage

With exclusion of air/oxygen

Keep containers tightly closed in a cool, well-ventilated place.

Beware of pressure build-up when stored in tightly closed containers.

Avoid temperatures greater than 30°C when using closed vessels without pressure compensation.

Keep away from direct sunlight.

Protect from moisture.

Suitable materials       stainless steel

Unsuitable materials       light metals and their alloys, Bronze

Transport information

Land transport (UN RTDG/ADR/RID)

UN number:

UN 2987

Shipping

Labels:

ADR: Tunnel Restriction Code: (E)

SpecialProvisions

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

UN number:

UN 2987

Shipping

Remarks

Marine transport (UN RTDG/IMDG)

UN number:

UN 2987

Shipping information

Proper shipping name and description:

CHLOROSILANES, CORROSIVE, N.O.S.

Chemical name:

Octachlorotrisilane

Remarks

Air transport (UN RTDG/ICAO/IATA)

UN number:

UN 2987

Shipping information

Proper shipping name and description:

CHLOROSILANES, CORROSIVE, N.O.S.

Chemical name:

Octachlorotrisilane

Labels:

IATA-C: Cargo Aircraft only. ERG-Code 8L.
Maximum Net Quantity per Package 30 L
IATA-P: Transport prohibited.

Remarks

SpecialProvisions

Exposure controls / personal protection

Control parameters

Hydrogen chloride

CAS-No.       7647-01-0       EC-No.

231-595-7

Control parameters       5 ppm

8 mg/m3              Time Weighted Average (TWA):(EU ELV)

Indicative

      

Control parameters       10 ppm

15 mg/m3              Short Term Exposure Limit (STEL):(EU ELV)

Indicative

Exposure controls

Engineering measures

If possible, use material transfer/filling, metering and blending plants that are closed.

If contact with gases or vapours cannot be excluded: Provide good ventilation or extraction.

Personal protective equipment

Respiratory protection

In case of dusts/vapours/aerosols being formed or if the limit values like TLV are exceeded:

use respiratory equipment with suitable filter (filter type ABEK) or wear a self contained respiratory apparatus

Use only respiratory protection equipment with CE-symbol including four digit test number.

The filter class for the respirator must be suitable for the maximum expected contaminant concentration (gas/vapour/aerosol/particulates) that may arise when handling the product. If this concentration is exceeded, self-contained breathing apparatus must be used.

Note time limit for wearing respiratory protective equipment.

Hand protection

Glove material       for example, Fluorinated rubber (Viton)

Material thickness       0,7 mm

Break through time       240 - 480 min

Glove material       for example, Nitrile rubber

Material thickness       0,5 mm

Break through time       30 - 120 min

The following glove materials are not suitable:

Glove material       neoprene

Selection of protective gloves to meet the requirements of specific workplaces.

Suitability for specific workplaces should be clarified with protective glove manufacturers.

The information is based on our own tests, references from the literature and information from glove manufacturers, or derived by analogy with similar materials.

Please observe that the daily duration of usage of a chemical protective glove is in practice far shorter due to the many influencing factors (e.g. temperature, mechanical strain on the glove material) than the permeation time determined acc. EN 374.

Eye protection

close-fitting protective goggles (e.g. closed goggles)

Skin and body protection

When handling larger quantities:

chemical protective suit, disposable protective clothing, acid-proof

for example:

Fluorinated rubber (Viton)

Hygiene measures

When using, do not eat, drink or smoke. Wash face and/or hands before break and end of work.

Remove immediately all contaminated clothing.

Dispose of promptly.

Protective measures

Handle in accordance with good industrial hygiene and safety practice.

The personal protective equipment used must meet the requirements of directive 89/686/EEC and amendments (CE certification).

If workplace exposure limits are exceeded and/or larger amounts are released (leakage, spilling, dust) the indicated respiratory protection should be used.

If there is the possibility of skin/eye contact, the indicated hand/eye/body protection should be used.

Use protective clothing / face shield if necessary.

Do not breathe in vapours or aerosols.

Avoid contact with skin and eyes.

Stability and reactivity

Reactivity

No dangerous reaction known under conditions of normal use.

Chemical stability

Stable under recommended storage conditions.

Possibility of hazardous reactions

Possibility of hazardous reactions       Reacts violently with:

water

decomposition (exothermic) with:

alcohols

amines

Conditions to avoid

Protect from moisture.

Prevent entrance of air/oxygen.

Keep away from direct sunlight.

Incompatible materials

atmospheric humidity, water, liberation of: hydrogen chloride., formation of mist

Hazardous decomposition products

hydrogen chloride in case of hydrolysis

Hydrolyses on contact with water.

Formation of hydrogen

Keep in inert gas (nitrogen).

Hydrolysis products are potentially explosive and sensitive to impact.

Hydrolysates react with alkali agents to yield: hydrogen

Disposal considerations

Waste treatment methods

Product

Before disposal consult producer.

Send back to producer.

Uncleaned packaging

Do not reuse empty containers and dispose of in accordance with the regulations issued by the appropriate local authorities.

If there is product residue in the emptied container, follow directions for handling on the container's label.

Incorrect disposal or reuse of this container is illegal and can be dangerous.

Other countries: observe the national regulations.

Waste Key Number

No waste key number as per the European Waste Types List can be assigned to this product, since such classification is based on the (as yet undetermined) use to which the product is put by the consumer.

The waste key number must be determined as per the European Waste Types List (decision on EU Waste Types List 2000/532/EC) in cooperation with the disposal firm / producing firm / official authority.