Manufactured in the United States from the finest raw materials, the Stevens brand is known for its consistently high quality and longer shelf life. Special orders are encouraged for different solution concentrations and packaging requirements.

Osmium Tetroxide
Electron Microscopy Grade

Purity 99.95% Minimum
OsO4   F.W. 254.20  
CAS #20816-12-0
Melting Range: 39.5-41.0°C Boiling Point: 129.7°C
Vapor Pressure at 25°C: 9.8 mmHg
Solubility: 5.07% in Cold Water; 6.5% in Hot Water; 25.0% in CCl4 Osmium Purity: >99.95% Non-Volatile matter: <0.02%

Packing: Scored vials for safer and easier handling. Ampoules are pre-cleaned and heat sealed in plastic bags to assure a contaminant-free solution. Ampoules are also free of pressure-sensitive labels and, therefore, do not require cleaning prior to solution preparation.

Storage: A cool, dry area, preferably under refrigeration.

Shipping: All prices are FOB. We prepay shipping charges and add the cost to our invoice.

Terms of Payment: Net cash - 30 Days. Shipments are generally made the day following receipt of order.