Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.
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EC number: 231-545-4 | CAS number: 7631-86-9
Guidance on Safe Use
Administrative data
First-aid measures
Skin Contact: Wash off with plenty of water and soap.
Eye contact: Possible discomfort is due to foreign substance effect. Rinse thoroughly with plenty of water keeping eyelid open. In case of persistent discomfort: Consult an ophthalmologist.
Ingestion: Clean mouth with water and drink afterwards plenty of water. After absorbing large amounts of substance / In case of discomfort: Supply with medical care.
Most important symptoms and effects, both acute and delayed: None known
Indication of any immediate medical attention and special treatment needed Hazards: None known.
Treatment: No hazards which require special first aid measures.
Fire-fighting measures
Unsuitable extinguishing media: Do not use full-force water jet in order to avoid dispersal and spread of the fire.
Special hazards arising from the substance or mixture: None known.
Advice for firefighters Special fire fighting procedures: 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 exting
Accidental release measures
For non-emergency personnel: No data available.
For emergency responders: No data available.
Environmental Precautions: Do not allow entrance in sewage water, soil stretches of water, groundwater, drainage systems.
Methods and material for containment and cleaning up: Sweep up or vacuum up spillage and collect in suitable container for disposal.
Reference to other sections: Wear personal protective equipment
Handling and storage
Conditions for safe storage, including any incompatibilities: Keep in a dry place. Take precautionary measures against static discharges.
Specific end use(s): Applications
Transport information
Land transport (UN RTDG/ADR/RID)
- UN number:
- Not classified as dangerous in the meaning of transport regulations.
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Inland waterway transport (UN RTDG/ADN(R))
- UN number:
- Not classified as dangerous in the meaning of transport regulations.
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Marine transport (UN RTDG/IMDG)
- UN number:
- Not classified as dangerous in the meaning of transport regulations.
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Air transport (UN RTDG/ICAO/IATA)
- UN number:
- Not classified as dangerous in the meaning of transport regulations.
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Exposure controls / personal protection
Occupational Exposure Limit
- Precipitated silica and silica gel:
Type of limit other: TWA 10 mg/m3
The value is for total dust containing no asbestos and < 1 % crystalline silica.
ACGIH, American Conference of Governmental Industrial Hygienists:
1993-1994 Threshold limit values for chemical substances and physical agents and biological exposure indices (1993)
Stability and reactivity
Disposal considerations
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
