General Information
Version
1.2
Revision date
2017-03-21
Product name
Osmium tetroxide
Substance name
Osmium tetroxide
Product Synonyms
Osmium oxide (OsO4), (T-4)- / Osmium tetraoxide / Osmium oxide / Osmic acid / Osmiumoxide, (T-4)- / Osmium oxide (OsO4) / Osmium(VIII) oxide
CAS No.
20816-12-0
1.2.1 Relevant identified uses
Scientific research and development, Use as laboratory reagent, Manufacture of substances
supplier name
Polysciences
Emergency telephone
1-800-255-3924
Icons in SDS
Company Information
company name
Polysciences
e-mail address of the competent person responsible for the Safety Data Sheet
info@polysciences.com
GHS Information
Signal word
Danger
Hazard Codes
Hazard statements (CLP)
H272, H301, H310, H314, H318, H330
Hazard statements
Code
Statements
H272
May intensify fire; oxidiser
Section 2
SECTION 2: Hazards identification
Classification of the substance or mixture GHS US classification Oxidizing solids Category 3 May intensify fire; oxidizer Acute toxicity (oral) Category 3 Toxic if swallowed Acute toxicity (dermal) Category 1 Fatal in contact with skin Acute toxicity (inhalation) Category 2 Fatal if inhaled Acute toxicity (inhalation:dust,mist) Category 2 Fatal if inhaled Skin corrosion/irritation Category 1B Causes severe skin burns and eye damage Serious eye damage/eye irritation Category 1 Causes serious eye damage
2.2 Label elements
GHS US labeling
Signal word
Danger
Hazard statements
May intensify fire; oxidizer Toxic if swallowed Fatal in contact with skin or if inhaled Causes severe skin burns and eye damage Causes serious eye damage
Precautionary statements
Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking Keep/Store away from clothing and other combustible materials Take any precaution to avoid mixing with combustibles Do not breathe dust/fume/gas/mist/vapors/spray. Do not get in eyes, on skin, or on clothing. Wash hands, forearms and face thoroughly after handling.
Other hazards which do not result in classification
No additional information available 02/27/2026 EN (English US) Page 1
Ingredient(s) with unknown acute toxicity
Not applicable
2.1 Classification of the substance or mixture
GHS US classification Oxidizing solids Category 3 May intensify fire; oxidizer Acute toxicity (oral) Category 3 Toxic if swallowed Acute toxicity (dermal) Category 1 Fatal in contact with skin Acute toxicity (inhalation) Category 2 Fatal if inhaled Acute toxicity (inhalation:dust,mist) Category 2 Fatal if inhaled Skin corrosion/irritation Category 1B Causes severe skin burns and eye damage Serious eye damage/eye irritation Category 1 Causes serious eye damage
