Bayville Chemical Supply Company Inc 70-G East Jefryn Boulevard Deer Park, New York, 11729 USA Telephone: 631-586-4309 Fax: 631-254-5591 E-Mail:
Bayville Chemical Supply Company Inc70-G East Jefryn BoulevardDeer Park, New York, 11729  USA           Telephone: 631-586-4309      Fax: 631-254-5591      E-Mail:

Carbonyl Sulfide Gas


98% pure



Carbonyl Sulfide gas is a colorless gas with an unpleasant odor and is very toxic. The smell is that of "rotten eggs". COS is also a flammable gas. Normally it is shipped as a liquefied gas under its vapor pressure of 160 psig (21.1oC).



COS is useful for the synthesis of the chemical compounds like Thioacids, Substituted Thiozoles, S-Trisubstituted Carbinols and Substituted Thiocarbamic Acids.


Technical Data:



Molecular Weight


Absolute Density (Gas)

2.527 kg/m3 (@101.325 kPa@20oC)

Relative Density (Gas)

2.10 (@101.325 kPa @20oC)

Density (Liquid)

1.238 kg/l (@saturation pressure @ -80oC)

Boiling Point


50.2oC (@101.325 kPa)


Recommended Cylinder and Valve:

DOT approved cylinder with CGA 330 Valve



Where to Find Us:

Bayville Chemical
70 East Jefryn Boulevard
Suite G
Deer Park, NY 11729

Phone: 631 586-4309

What's New

New larger location

As of August 2014, we have moved to this new, larger, modern facility to better service your needs.


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