Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Administrative data

First-aid measures

Emergency measure - Inhalation: Remove to fresh air.

Emergency measure - Eyes: Immediately flush with water for at least 15 minutes

Emergency measure - Skin: Remove the liquid from the skin with dry cloth and wash with

detergent.

Emergency measure - Ingestion: Wash out mouth with water provided person is conscious.

Never give anything by mouth to an unconscious person.

Consult a physician immediately.

Fire-fighting measures

Recommended extinguishing agent: Carbondioxide or foam extinguisher should be user.

Product arising from burning: Carbon dioxide, water and silica ash are produced by

complete combustion. Various intermediate organic oxides

such as aldehydes and carbon monoxide can naturally be

evolved too.

Product determined by test: N

Protective equipment: Personel protective equipments should be weared to avoid

inhalation and direct contact to skin or eyes.

Accidental release measures

Handling and storage

Handling: To avoid inhalation and direct contact to skin or eyes

rubber gloves, eye protection and/of masks must be weared

during the process.

Storage: The substance should be stored in closed containers at a

cool place without any ingition source.

Packaging of the substance and or preparation: The substance should be packaged in cans or drums of

resin-coated steel.

Transport information

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Marine transport (UN RTDG/IMDG)

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Air transport (UN RTDG/ICAO/IATA)

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Special provisions / remarks
Remarks:
Transport: Usual cans and drums of resin-coated steel should be used.
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Exposure controls / personal protection

Stability and reactivity

Danger other than fire: The substance reacts gradually but steadily with water or

moisture even at ordinary conditions.

The reaction is not considered to be hazardous (not

explosive, not especially exothermic), only the released

methanol is naturally flammable and moderately hazardous to

the human health.

Chemical reaction with water: The methoxy groups directly attached to the Silicon atoms

are reactive with water.

H20

R-Si(OCH3)3  ======> R-Si(OH)3 + 3 CH3OH

Dust explosion determined by test: N

Disposal considerations

Industry - Possibility of recovery/recycling: No recycling of the used substance will be possible because

of the irreversible ready reactivity with water. The

substance will have been degraded before recovery.

Industry - Possibility of neutralisation: The hydrolysis of the substance produces the corresponding

silsequioxane, which will be less hazardous of inhalation

because of no longer volatility and may be less hazardous of

irritation because of lower permeability to skin and eyes.