SAFETY DATA SHEET

Osmium Tetroxide, 4% Aqueous Solution

Version 1Last reviewed 5 December 2023Catalogue: 19140 (C011-2), 19150 (C011-210), 19151 (C011-250), 19160 (C011-5), 19170 (C011-510), 19171 (C011-550), 19180 (C011), 19190 (C011-1010), 19191 (C011-1050)

1. Identification

Product Identifiers

Product Name: Osmium Tetroxide 4% Aqueous Solution
Other Names: N/A
Product Number(s): 19140 (C011-2), 19150 (C011-210), 19151 (C011-250), 19160 (C011-5), 19170 (C011-510), 19171 (C011-550), 19180 (C011), 19190 (C011-1010), 19191 (C011-1050)
CAS Number: 20816-12-0

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

Emergency Contact Details

ProSciTech Pty Ltd
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. 2 H310 Fatal in contact with skin.
GHS05 corrosion
Eye Dam. 1 H318 Causes serious eye damage.
GHS07
Skin Irrit. 2 H315 Causes skin irritation.

Label Elements

Signal Words: None
Hazard Statement(s): H301 Toxic if swallowed.
H310 Fatal in contact with skin.
H332 Harmful if inhaled.
H315 Causes skin irritation.
H318 Causes serious eye damage.
Precautionary Statement(s): Do not breathe dust/fume/gas/mist/vapours/spray.
Do not get in eyes, on skin, or on clothing.
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.
[In case of inadequate ventilation] wear respiratory protection.
If swallowed: Immediately call a poison center/doctor.
Rinse mouth.
If on skin: Wash with plenty of water.
IF INHALED: Remove person to fresh air and keep comfortable for breathing.
If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do.
Continue rinsing.
Specific treatment is urgent (see on this label).
Take off immediately all contaminated clothing and wash it before reuse.
If skin irritation occurs: 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

Name	CAS No.	Content (w/w)	Classification
Osmium Tetroxide	20816-12-0	2.5-10%	Acute Tox. 2, H300; Acute Tox. 1, H310; Acute Tox. 2, H330; Skin Corr.1B, H314

4. First Aid Measures

Ingestion: Do not induce vomiting; call for medical help immediately.
Inhalation: In case of unconsciousness place patient stably in side position for transportation.
Skin Contact: Immediately wash with water and soap and rinse thoroughly.
Eye Contact: Rinse opened eye for several minutes under running water. Then consult a doctor.
Other Information: Immediately remove any clothing soiled by the product.
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
20816-12-0 Osmium Tetroxide	0.0002 ppm	0.0016 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 skin.
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 liquid
Odour: Chlorine-like
pH: at 20 °C (68 °F): 7
Vapour Pressure: at 20 °C (68 °F): 23 hPa (17.3 mm Hg)
Density: at 20 °C (68 °F): 1.15624 g/cm³ (9.64882 lbs/gal)
Boiling Point: 100 °C (212 °F)
Melting Point: Undetermined.
Solubility: Not miscible or difficult to mix with water.
Specific Gravity of Density: Not available.
Flash Point: Not applicable.
Flammable (Explosive) Limits: Product does not present an explosion hazard.
Ignition Temperature: Product is not self igniting.
Formula: Solvent content:
Water: 96.0 %
VOC content: 0.00 %
0.0 g/l / 0.00 lb/gal
Solids content: 4.0 %

10. Stability and Reactivity

Reactivity: No further relevant information available.
Chemical stability: Stable under normal conditions of use.
Possibility of hazardous reactions: No dangerous reactions known.
Conditions to avoid: No decomposition if used according to specifications.
Incompatible materials: No further relevant information available.

11. Toxicological Information

Acute effects: Toxic if swallowed.
Irritant to skin
Harmful if inhaled.
Eye contact: Strong irritant with the danger of severe eye injury
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
Very toxic
Danger through skin absorption.

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 (German Regulation) (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

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
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: 3287 TOXIC LIQUID, INORGANIC, N.O.S.
Transport hazard class: 6.1
Packing group: PG III
Environmental hazard: Marine pollutant. Symbol (fish and tree)
Special precautions for users: Warning: Toxic substances.
Stowage Category A
Stowage Code SW2 Clear of living quarters.
Additional information: ADR
Quantity limitations On passenger aircraft/rail: 60 L
On cargo aircraft only: 220 L
Remarks: 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: 5 December 2023
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.