Safety Data Sheets / Osmium Tetroxide 2% Aqueous Solution
Safety Data Sheet
Osmium Tetroxide 2% Aqueous Solution
1. Identification
Product Identifiers
- Product Name
- Osmium Tetroxide 2% Aqueous Solution
- Other Names
- Synonyms
- Product Number(s)
- 19152, 19152-SP, 19153, 19172, 19173, 19192, 19193
- CAS Number
- N/A
Recommended use of the chemical and restriction on use
Laboratory use
Company Details
ProSciTech Pty Ltd
11 Carlton Street
KIRWAN QLD 4817
Australia
(07) 4773 9444
pst@proscitech.com
proscitech.com.au
11 Carlton Street
KIRWAN QLD 4817
Australia
(07) 4773 9444
pst@proscitech.com
proscitech.com.au
Emergency Contact Details
ProSciTech Pty Ltd
11 Carlton Street
KIRWAN QLD 4817
Australia
(07) 4773 9444
pst@proscitech.com
proscitech.com.au
11 Carlton Street
KIRWAN QLD 4817
Australia
(07) 4773 9444
pst@proscitech.com
proscitech.com.au
2. Hazards Identification
Classification of the substance or mixture
- GHS06 Skull and crossbones
- Acute Tox. 3 H301 Toxic if swallowed.
- Acute Tox. 3 H311 Toxic in contact with skin.
- Acute Tox. 3 H331 Toxic if inhaled.
- GHS07
- Skin Irrit. 2 H315 Causes skin irritation.
- Eye Irrit. 2A H319 Causes serious eye irritation.
Label Elements


- Signal Words
- None
- Hazard Statement(s)
- Toxic if swallowed, in contact with skin or if inhaled.
- Causes skin irritation.
- Causes serious eye irritation.
- Precautionary Statement(s)
- Avoid breathing dust/fume/gas/mist/vapours/spray
- Wash thoroughly after handling.
- Do not eat, drink or smoke when using this product.
- Use only outdoors or in a well-ventilated area.
- Wear protective gloves/protective clothing/eye protection/face protection.
- If swallowed: Immediately call a poison center/doctor.
- Specific treatment (see on this label).
- Rinse mouth.
- If on skin: Wash with plenty of water.
- IF INHALED: Remove person to fresh air and keep comfortable for breathing.
- Call a poison center/doctor.
- If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do.
- Continue rinsing.
- Call a poison center/doctor if you feel unwell.
- Take off immediately all contaminated clothing and wash it before reuse.
- If skin irritation occurs: Get medical advice/attention.
- If eye irritation persists: Get medical advice/attention.
- Store in a well-ventilated place. Keep container tightly closed.
- Store locked up.
- Dispose of contents/container in accordance with local/regional/national/international regulations
Primary route(s) of entry
Inhalation or Skin contact
Human Health
- Inhalation
- Remove person to fresh air and keep comfortable for breathing.
- Ingestion
- Immediately call a POISON CENTRE/ doctor.
- Rinse mouth. Do NOT induce vomiting.
- Eyes
- Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
- Skin
- (or hair): Take off immediately all contaminated clothing. Rinse skin with water/shower.
Environment
No further relevant information available.
3. Composition / Information on Ingredients
No information provided.
4. First Aid Measures
- Ingestion
- Do not induce vomiting; immediately call for medical help.
- Inhalation
- Supply fresh air or oxygen; call for doctor.
- In case of unconsciousness place patient stably in side position for transportation
- Skin Contact
- Immediately remove any clothing soiled by the product.
- Immediately wash with water and soap and rinse thoroughly.
- Eye Contact
- Rinse opened eye for several minutes under running water. If symptoms persist, consult a doctor.
- Other Information
- Immediately remove any clothing soiled by the product.
- Remove breathing apparatus only after contaminated clothing have been completely removed.
- In case of irregular breathing or respiratory arrest provide artificial respiration.
5. Firefighting Measures
Suitable extinguishing equipment
- Fire
- CO₂, powder or water spray.
- Fight larger fires with water spray or alcohol resistant foam.
- Use fire fighting measures that suit the environment
- HAZCHEM
- No further relevant information available.
Special protective equipment and precautions for fire fighters
Mouth respiratory protective device
6. Accidental Release Measures
- Personal precautions, protective equipment and emergency procedures
- Not required.
- Environmental precautions
- Do not allow to enter sewers/ surface or ground water.
- Methods and materials for containment and clean up
- Absorb with liquid-binding material (sand, diatomite, acid binders, universal binders, sawdust).
- Dispose contaminated material as waste according to item 13.
- Ensure adequate ventilation.
- PAC-1:
- 20816-12-0 Osmium Tetroxide 6.00E-04 ppm
- PAC-2:
- 20816-12-0 Osmium Tetroxide 0.0084 ppm
- PAC-3:
- 20816-12-0 Osmium Tetroxide 4.0 ppm
7. Handling and Storage
- Precautions for safe handling
- Ensure good ventilation/exhaustion at the workplace.
- Open and handle receptacle with care.
- Prevent formation of aerosols
- Keep respiratory protective device available
- Conditions for safe storage
- Keep receptacle tightly sealed.
8. Exposure Controls / Personal Protection
Exposure Standards
| Material | TWA ppm | TWA mg/m³ | STEL ppm | STEL mg/m³ |
|---|---|---|---|---|
| Osmium Tetroxide | 0.0002 ppm | 0.002* mg/m³ | 0.0006 ppm | 0.0047 mg/m³ |
- Engineering controls
- Keep away from foodstuffs, beverages and feed.
- Immediately remove all soiled and contaminated clothing.
- Wash hands before breaks and at the end of work.
- Store protective clothing separately.
- Avoid contact with the eyes and skin.
Personal protective equipment
- Eye and face protection
- Tightly sealed goggles recommended.Avoid contact with the eyes.
- Skin protection
- Protective gloves recommended.
- Avoid contact with the skin.
- Wash hands before breaks and at the end of work.
- Body protection
- Immediately remove all soiled and contaminated clothing.
- Store protective clothing separately.
- Respiratory protection
- In case of brief exposure or low pollution use respiratory filter device. In case of intensive or longer exposure use respiratory protective device that is independent of circulating air.
9. Physical and Chemical Properties
General information
- Appearance
- Light yellow, solid
- Odour
- Chlorine-like
- pH
- Not determined
- Vapour Pressure
- at 20 °C (68 °F): 23 hPa (17.3 mm Hg)
- Density
- at 20 °C (68 °F): 1.07812 g/cm³ (8.99691 lbs/gal)
- Boiling Point
- 130 °C (266 °F)
- Melting Point
- Undetermined
- Solubility
- Not miscible or difficult to mix
- Specific Gravity of Density
- Not determined
- Flash Point
- Not applicable
- Flammable (Explosive) Limits
- Not flammable
- Ignition Temperature
- Product is not selfigniting
- Formula
- Solvent content:
- Water: 98.0 %
- VOC content: 0.00 %
- 0.0 g/l / 0.00 lb/gal
- Solids content: 2.0 %
10. Stability and Reactivity
- Reactivity
- No further relevant information available
- Chemical stability
- Stable under normal conditions
- Possibility of hazardous reactions
- No dangerous reactions known.
- Conditions to avoid
- No further relevant information available
- Incompatible materials
- No further relevant information available
11. Toxicological Information
- Acute effects
- Toxic if swallowed.
- Irritant to skin
- Harmful if inhaled.
- Eye contact
- Irritating effect
- Skin contact
- Irritant to skin and mucous membranes.
- Ingestion
- No further relevant information available
- Inhalation
- No further relevant information available
- Toxicity and irritation
- The product shows the following dangers according to internally approved calculation methods for preparations:
- Toxic
- Irritant
12. Ecological Information
- Ecotoxicity
- No further relevant information available.
- Persistence and degradability
- No further relevant information available.
- Bioaccumulative potential
- No further relevant information available.
- Other adverse effects
- Water hazard class 1 (Self-assessment): slightly hazardous for water
- Do not allow undiluted product or large quantities of it to reach ground water, water course or sewage system
13. Disposal Considerations
General information
- Must not be disposed of together with household garbage. Do not allow product to reach sewage system.
- Disposal must be made according to official regulations
- Recommendation:
- Must not be disposed of together with household garbage. Do not allow product to reach sewage system.
14. Transport Information
ADG label required


- HAZCHEM
- No further relevant information available.
- UN Number
- UN3287
- Proper shipping name
- TOXIC LIQUID, INORGANIC, N.O.S.
- Transport hazard class
- 6.1 Toxic substances
- Packing group
- III
- Environmental hazard
- Yes (DOT)
- Symbol (fish and tree)
- Special precautions for users
- Warning: Toxic substances
- SW2 Clear of living quarters
- Additional information
- Quantity limitations On passenger aircraft/rail: 60 L
- On cargo aircraft only: 220 L
- Special marking with the symbol (fish and tree).
- Excepted quantities (EQ) Code: E1
- Maximum net quantity per inner packaging: 30 mL
- Maximum net quantity per outer packaging: 1000 mL
- Limited quantities (LQ) 5L
- Excepted quantities (EQ) Code: E1
- Maximum net quantity per inner packaging: 30 mL
- Maximum net quantity per outer packaging: 1000 mL
15. Regulatory Information
- Poisons Schedule Number
- None of the ingredients is listed.
- Other Information
- No further relevant information available.
16. Other Information
- SDS preparation date
- 27 November 2024
- Comments
- This information is based on our present knowledge. However, this shall not constitute a guarantee for any specific product features and shall not establish a legally valid contractual relationship.This Safety Data Sheet (SDS) has been prepared in compliance with the Preparation of Safety Data Sheets for Hazardous Chemicals Code of Practice February 2016. It is the user's responsibility to determine the suitability of this information for adoption of necessary safety precautions. The information published in this SDS has been compiled from the publications listed in Section 16: to the best of our ability and knowledge these publications are considered accurate. We reserve the right to revise Safety Data Sheets as new information becomes available. Copies may be made for non-profit use.
