Osmium Tetroxide
Synonyms: Osmic acid
SECTION 1: Identification of the substance/mixture and of the company/undertaking
Chemical Name
Osmium Tetroxide
Product Form
Substance
Catalogue No.
AL3358
CAS Number
20816-12-0
EC Number
244-058-7
EC Index Number
-
Grade
AR
HSN Code
28439019
Molecular Formula
OsO4
SECTION 1: Identification of the substance/mixture and of the company/undertaking
1.1 Product identifier
Chemical Name
Osmium Tetroxide
Catalogue No.
AL3358
Product form
Substance
CAS Number
20816-12-0
EC Number
244-058-7
Grade
AR
EC Index Number
Not specified
Chemical Formula
OsO4
HSN Code
28439019
Synonyms
Osmic acid
Chemical Structure
-
1.2 Relevant identified uses of the substance or mixture and uses advised against
Use of the substance/mixture
Fixative and stain in electron microscopy
Uses advised against
Not specified
1.3 Details of the supplier of the safety data sheet
Company identification
Address:- 102, B wing, Savgan Heights, RTO Lane,Andheri (W), Mumbai-400 053Maharashtra, India.
1.4 Emergency Contact Details
Phone / e-Mail
Phone : +91 22 26317055 Mobile : +91 9820385757 e-mail : info@alphachemika.co.in
SECTION 2: Hazards identification
2.1 Classification of the substance or mixture
Classification according to Regulation (EC) No 1272/2008
Acute Tox. 2; Acute Tox. 1; Skin Corr. 1B; Resp. Sens. 1
Classification source
ECHA C&L Inventory via PubChem CID 30318 - hazard classes notified by at least 50% of companies; pictograms and signal word derived from those statements
2.2 Label elements
Hazard pictograms
Corrosive, Acute Toxic, Health Hazard
Signal word
Danger
Hazard statements
H300: Fatal if swallowed; H310: Fatal in contact with skin; H314: Causes severe skin burns and eye damage; H330: Fatal if inhaled; H334: May cause allergy or asthma symptoms or breathing difficulties if inhaled
Precautionary statements
P233, P260, P262, P264, P270, P271, P280, P284, P301+P316, P301+P330+P331, P302+P352, P302+P361+P354, P304+P340, P305+P354+P338, P316, P320, P321, P330, P342+P316, P361+P364, P363, P403, P403+P233, P405, P501
2.3 Other hazards
Other hazards
Extremely toxic; may cause severe eye and respiratory tract damage.
SECTION 3: Composition/information on ingredients
3.1 Substance
Name
Osmium Tetroxide
CAS No.
20816-12-0
SECTION 4: First aid measures
4.1 Description of first aid measures
First-aid measures after inhalation
If this chemical has been inhaled, remove the exposed person to fresh air at once. If breathing has stopped, perform artificial respiration. Keep the person warm and at rest.
First-aid measures after skin contact
If this chemical contacts the skin, immediately wash the contaminated skin with soap and water. If this chemical penetrates the clothing, immediately remove the clothing, wash the skin with soap and water, and get medical attention promptly.
First-aid measures after eye contact
If this chemical contacts the eyes, immediately wash (irrigate) the eyes with large amounts of water, occasionally lifting the lower and upper lids. Get medical attention immediately.
First-aid measures after ingestion
If this chemical has been swallowed, get medical attention immediately.
4.2 Most important symptoms and effects, both acute and delayed
Symptoms relating to use
Severe respiratory distress, eye damage, skin irritation.
4.3 Indication of any immediate medical attention and special treatment needed
General information
Treat symptomatically. Show this safety data sheet to the treating physician.
SECTION 5: Fire-fighting measures
5.1 Extinguishing media
Suitable extinguishing media
Water spray, carbon dioxide, dry chemical powder, foam.
Unsuitable extinguishing media
Not specified
5.2 Special hazards arising from the substance or mixture
Special procedures
Reacts violently with organic materials; use appropriate extinguishing media.
5.3 Advice for firefighters
Protection during firefighting
Do not enter fire area without proper protective equipment, including respiratory protection.
SECTION 6: Accidental release measures
6.1.1 For non-emergency personnel
Emergency procedures
Evacuate area; ventilate; use appropriate PPE.
6.3 Methods and material for containment and cleaning up
Methods for cleaning up
Evacuate danger area! Consult an expert! Personal protection: complete protective clothing including self-contained breathing apparatus. Ventilation. Do NOT let this chemical enter the environment. Sweep spilled substance into covered containers.
6.4 Reference to other sections
Reference
Not specified
SECTION 7: Handling and storage
7.1 Precautions for safe handling
Precautions for safe handling
Use in a fume hood; wear appropriate PPE including gloves and goggles.
Hygiene measures
Wash hands and other exposed areas with mild soap and water before eating, drinking or smoking and when leaving work.
7.2 Conditions for safe storage, including any incompatibilities
Storage conditions
Separated from combustible substances, reducing agents and food and feedstuffs. Ventilation along the floor.
SECTION 8: Exposure controls/personal protection
8.2 Exposure controls
Hand protection
Protective gloves (e.g. nitrile rubber)
Eye protection
Chemical safety goggles or safety glasses
Skin and body protection
Wear suitable protective clothing
Respiratory protection
Use NIOSH-approved respirator if exposure limits are exceeded.
SECTION 9: Physical and chemical properties
9.1 Information on basic physical and chemical properties
Physical state
Solid
Colour
Pale yellow to golden
Odour
Acrid, chlorine-like odor
Odour threshold
Not specified
pH value
Not applicable
Relative evaporation rate (butylacetate=1)
Not specified
Melting point
40.6 °C
Freezing point
Not specified
Boiling point
130.0 °C at 760 mm Hg; begins to sublime and distill well below bp
Flash point
Not applicable
Auto-ignition temperature
Not applicable
Decomposition temperature
Not specified
Flammability (solid, gas)
Not flammable
Vapour pressure
11 mm Hg at 27 °C
Relative vapour density at 20°C
Relative vapor density (air = 1): 8.8
Density
5.10 (Calculated)
Solubility
Soluble in water, alcohol, and ether
Log Pow
Not specified
Viscosity, kinematic
Not applicable
Viscosity, dynamic
Not specified
Explosive properties
Not explosive
Oxidising properties
Strong oxidizer
Explosive limits
Not applicable
SECTION 10: Stability and reactivity
10.1 Reactivity
Reactivity
Reacts violently with organic materials and reducing agents.
10.2 Chemical stability
Chemical stability
Readily vaporizes from aqueous solution even at room temperature.
10.3 Possibility of hazardous reactions
Possibility of hazardous reactions
Decomposes on heating. This produces fumes of osmium. The substance is a strong oxidant.
10.4 Conditions to avoid
Conditions to avoid
Avoid contact with incompatible materials and excessive heat.
10.5 Incompatible materials
Incompatible materials
Strong reducing agents, organic materials, and bases.
10.6 Hazardous decomposition products
Hazardous decomposition products
When heated to decomposition, it emits toxic fumes of osmium.
SECTION 11: Toxicological information
11.1 Information on toxicological effects
Acute toxicity
LD50 Mouse oral 162 mg/kg; LD50 Rat ip 14.1 mg/kg; LD50 Mouse ip 13.5 mg/kg
Skin corrosion/irritation
H314: Causes severe skin burns and eye damage
Serious eye damage/irritation
Not classified (based on available data)
Respiratory or skin sensitisation
H334: May cause allergy or asthma symptoms or breathing difficulties if inhaled
Germ cell mutagenicity
Not classified (based on available data)
Carcinogenicity
Not classified (based on available data)
Specific target organ toxicity (single exposure)
Not classified (based on available data)
Specific target organ toxicity (repeated exposure)
Not classified (based on available data)
SECTION 12: Ecological information
12.1 Toxicity
Toxicity information
Not specified
12.2 Persistence - degradability
Persistence - degradability
Not specified
12.3 Bioaccumulative potential
Bioaccumulative potential
Not specified
12.4 Mobility in soil
Mobility in soil
Not specified
12.6 Other adverse effects
Environmental precautions
Not specified
SECTION 13: Disposal considerations
13.1 Waste treatment methods
Additional Info
Dispose of contents/container in accordance with local, regional, national and international regulations.
SECTION 14: Transport information
14.1 UN number
UN-No. (ADR)
UN 2471
UN-No. (IMDG)
UN 2471
UN-No. (IATA)
UN 2471
UN-No. (ADN)
UN 2471
UN-No. (RID)
UN 2471
14.2 UN proper shipping name
Proper Shipping Name (ADR)
Osmium Tetroxide
Proper Shipping Name (IMDG)
Osmium Tetroxide
Proper Shipping Name (IATA)
Osmium Tetroxide
Proper Shipping Name (ADN)
Osmium Tetroxide
Proper Shipping Name (RID)
Osmium Tetroxide
14.3 Transport hazard class(es)
Transport hazard class(es)
6.1
14.4 Packing group
Packing group (ADR)
I
Packing group (IMDG)
I
Packing group (IATA)
I
Packing group (ADN)
I
Packing group (RID)
I
14.5 Environmental hazards
Dangerous for the environment
Not specified
Marine pollutant
Not specified
Other information
No supplementary information available
SECTION 15: Regulatory information
15.1 Safety, health and environmental regulations/legislation specific for the substance or mixture
15.1.1 EU-Regulations
Not specified
SECTION 16: Other Information
Disclaimer
The information provided in this Safety Data Sheet is correct to the best of our knowledge, information and belief at the date of its publication. The information is designed only as a guidance for safe handling, use, processing, storage, transportation, disposal and release and is not to be considered a guarantee or quality specification. The information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process, unless specified in the text.