what is mustard gas made of

Mustard gas is made of sulfur mustard , chemically known as bis(2-chloroethyl) sulfide. It is a toxic chemical warfare agent, not a single “gas” in the everyday sense, and pure sulfur mustard is usually a colorless oily liquid that can look yellow-brown when impure.

What it is

• Chemical name: bis(2-chloroethyl) sulfide.

• Formula: C4H8Cl2S.

• Commonly called mustard gas, mustard agent, or sulfur mustard.

Important note

This substance is extremely dangerous and can cause severe burns and injury on contact or inhalation. If your question is about exposure or safety, the safest response is immediate fresh air, decontamination, and emergency medical help.