Safety Data SheetChemical Risk Assessment
n-Butyldimethylchlorosilane
by Avocado Research Chemicals Ltd. (Part of Thermo Fisher Scientific)
SDS · PDF, approx. 220 KB CRA · PDF, approx. 180 KB
n-Butyldimethylchlorosilane is supplied by Avocado Research Chemicals Ltd. (Part of Thermo Fisher Scientific) under product code B23551. This page provides both the Safety Data Sheet (SDS) and the Chemical Risk Assessment (CRA) for this substance, under GHS/CLP regulations for UK workplace use under COSHH. The full SDS and CRA documents are available to download above.
This SDS was last revised on 12 February 2024. The matching CRA is updated in line with SDS revisions. Workplaces handling this substance should retain a current SDS and risk assessment for the duration of use.
- Language
- English
- Regulation
- GHS/CLP
- Revision Date
- 12 Feb 2024
- Signal Word
- DANGER
- Product Code
- B23551
- CAS Number
- 1000-50-6
Switch between the Safety Data Sheet and the Chemical Risk Assessment for this substance.
Hazards at a GlanceFrom the Safety Data Sheet
Signal Word: DANGER
GHS02Flammable
GHS07Harmful / irritant
GHS05Corrosive
GHS09EnvironmentHazard Statements (H-phrases)
- H226
- Flammable liquid and vapour.
- H302
- Harmful if swallowed.
- H314
- Causes severe skin burns and eye damage.
- H335
- May cause respiratory irritation.
- H411
- Toxic to aquatic life with long lasting effects.
- EUH014
- Reacts violently with water.
Need the full hazard breakdown? Precautionary statements, first aid, physical properties and exposure controls are in the full SDS PDF.
Common QuestionsAbout this Safety Data Sheet
This Safety Data Sheet was issued by Avocado Research Chemicals Ltd. (Part of Thermo Fisher Scientific) on 12 February 2024 under GHS/CLP. ISDSS syncs its database regularly to keep documents current.
Yes, a free ISDSS account is required to download the PDF. Registration takes under two minutes and gives you access to over 1.5 million Safety Data Sheets. Once registered, you can also save documents to your personal library for quick access.
The manufacturer, importer or supplier that places the substance on the market is responsible for providing a current Safety Data Sheet to downstream users, free of charge.
No. An SDS provides the hazard information you need, but a COSHH assessment must consider how the substance is actually used in your workplace. The matching Chemical Risk Assessment (CRA) on this page is a starting point you should adapt to your own tasks and controls.
Chemical Risk Assessment SummaryFrom the Chemical Risk Assessment
Assessment Summary
This Chemical Risk Assessment is derived from the Safety Data Sheet for n-Butyldimethylchlorosilane issued by Avocado Research Chemicals Ltd. (Part Of Thermo Fisher Scientific) on 12 February 2024 It presents the substance's hazards organised by risk level, with the relevant regulatory statements and recommended controls for each. These hazards are rated across three levels: High, Medium and Low Risk, based on the hazard classifications in the SDS.
Hazard PreviewA snapshot of substance hazards and controls
Rating Before Controls
HIGH RISK
H314: Causes severe skin burns and eye damage
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P264 Wash skin thoroughly after handling.
P501 Dispose of contents/container to correct disposal area.
P405 Store locked up
P280: Wear protective gloves/protective clothing/eye protection/face protection.
P363 Wash contaminated clothing before reuse.
5 other controls in place
Rating Before Controls
HIGH RISK
H226: Flammable liquid and vapour
P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
P243 Take precautionary measures against static discharge.
P403 + P233 Store in a well-ventilated place. Keep container tightly closed.
P235 Keep cool.
P241 Use explosion-proof electrical/ventilating/lighting/…/equipment
P501 Dispose of contents/container to correct disposal area.
5 other controls in place
Rating Before Controls
HIGH RISK
H411: Toxic to aquatic life with long lasting effects
P273 Avoid release to the environment
P501 Dispose of contents/container to correct disposal area
P391 Collect spillage. Hazardous to the aquatic environment
Note: This is a preview of the substance's hazards. A substance commonly carries more hazards. Download the full Chemical Risk Assessment for more information.
Recommended Control MeasuresKey PPE and handling controls
Need to download the Chemical Risk Assessment? The full CRA PDF includes all hazard classifications, regulatory statements and recommended controls.
Common QuestionsAbout this Risk Assessment
This Chemical Risk Assessment provides the substance-level hazard inputs needed for a COSHH assessment under the UK Control of Substances Hazardous to Health Regulations 2002. It is not a substitute for a full workplace risk assessment. You must combine this with your own assessment of how the substance is actually used on your site, including task specifics, exposure duration and local controls.
The CRA is derived from the hazard data in the manufacturer's SDS for n-Butyldimethylchlorosilane, mapped against standard workplace task profiles. It is updated in line with SDS revisions. The CRA is a starting point for your own assessment, not a finished document.
A Safety Data Sheet is produced by the manufacturer and describes the hazards of the substance itself. A Chemical Risk Assessment evaluates those hazards in the context of how the substance is actually used in the workplace, covering specific tasks, exposure routes and recommended controls. Both documents work together.
Yes, a free ISDSS account gives you access to both the SDS and the linked CRA for over 1.5 million substances. Registration takes under two minutes.