Safety Data SheetChemical Risk Assessment
Osmium Tetroxide, 2% Aqueous
by Ted Pella, Inc.
SDS · PDF, approx. 220 KB CRA · PDF, approx. 180 KB
Osmium Tetroxide, 2% Aqueous is supplied by Ted Pella, Inc. under product code 18466. This page provides both the Safety Data Sheet (SDS) and the Chemical Risk Assessment (CRA) for this substance, under OSHA regulations for UK workplace use under COSHH. The full SDS and CRA documents are available to download above.
This SDS was last revised on 13 February 2023. 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
- OSHA
- Revision Date
- 13 Feb 2023
- Signal Word
- DANGER
- Product Code
- 18466
- CAS Number
- 20816-12-0
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
GHS06Acute toxicity
GHS05Corrosive
GHS07Harmful / irritant
GHS08Health hazardHazard Statements (H-phrases)
- H300+H330
- See full Safety Data Sheet for the hazard statement wording.
- H311
- Toxic in contact with skin.
- H314
- Causes severe skin burns and eye damage.
- H319
- Causes serious eye irritation.
- H334
- May cause allergy or asthma symptoms or breathing difficulties if inhaled.
- H361
- Suspected of damaging fertility or the unborn child.
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 Ted Pella, Inc. on 13 February 2023 under OSHA. 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 Osmium Tetroxide, 2% Aqueous issued by Ted Pella, Inc. on 13 February 2023 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 one level: High Risk, based on the hazard classifications in the SDS.
Hazard PreviewA snapshot of substance hazards and controls
Rating Before Controls
HIGH RISK
H361: Suspected of damaging fertility or the unborn child
P201 Obtain special instructions before use.
P202 Do not handle until all safety precautions have been read and un- derstood.
P281 Use personal protective equipment as required.
P405 Store locked up
P501 Dispose of contents/container to correct disposal area.
P308 + P313 IF exposed or concerned: Get medical advice/attention.
Rating Before Controls
HIGH RISK
H311: Toxic in contact with skin
P501 Dispose of contents/container to correct disposal area.
P405 Store locked up
P280: Wear protective gloves/protective clothing/eye protection/face protection.
<p>P302 + P352 IF ON SKIN: wash with plenty of soap and water.</p>
P312 Call a POISON CENTER or doctor/physician if you feel unwell
P322 Specific measures (see …on this label)
2 other controls in place
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
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 Osmium Tetroxide, 2% Aqueous, 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.