Highly toxic chemicals

Cyanogen chloride, stabilized appears as a colorless gas or liquid with a strong acrid/pungent odor. Shipped as a liquid confined under its own vapor... more info

Potassium cyanide  is a compound with the formula  KCN . This colorless, highly toxic crystalline salt, similar in appearance to... more info

Sodium cyanide  is a poisonous compound with the formula NaCN. It is a white, water-soluble solid. Cyanide has a high affinity for... more info

Mercuric chloride appears as an odorless white crystalline solid. Density 5.4 g / cm3. Melting point 277 °C. Slightly volatile at ordinary... more info

Methanesulfonyl chloride appears as a pale yellow corrosive liquid. Denser than water and insoluble in water. Very toxic by ingestion,... more info

  Mercuric oxide, [solid] appears as red or orange-red odorless, dense crystalline powder or scales, yellow when finely powdered. Used as a... more info

  Osmium tetroxide appears as a colorless or yellow solid with a pungent odor of chlorine. Begins to sublime below the melting point.... more info

  Sodium azide appears as a colorless crystalline solid. Density 1.85 g / cm3. Burns in the air and may explode if large quantities are... more info

  Arsenic trioxide appears as white or transparent, glassy amorphous lumps or crystalline powder. Slightly soluble in water, but dissolves very... more info

Arsine is a colorless, flammable, and highly toxic gas. It has a garlic-like or fishy odor that can be detected at concentrations of 0.5 ppm and... more info

Ethyl chloroformate appears as a colorless liquid with a pungent odor. Flashpoint 66 °F. Very toxic by inhalation. Corrosive to metals and... more info

  Allyl alcohol appears as a clear colorless liquid with a mustard-like odor. Flash point 70 °F. Very toxic by inhalation and ingestion.... more info

At room temperature, chlorine is a yellow-green gas heavier than air and has a strong irritating odor. It can be converted to a liquid... more info

Phosphine is a colorless, flammable, and explosive gas at ambient temperature that has the odor of garlic or decaying fish. Small amounts occur... more info