Low-priced stock that sells at less than $1.00 per share. Often highly-speculative and volatile, such as start-up mining companies. While, in general, penny stock are considered high-risk securities, some penny stock mature into less-speculative investments. All penny stock are traded over-the-counter.
In its natural form, cork is also a very good fire retardant, although cork dust is actually extremely flammable (because here the cell structure has been broken down). Impermeable: Cork has a magic chemical in its cell membrane that makes it completely impermeable to liquids and gases.
1 The agent itself does not burn, but it may decompose upon heating to produce corrosive and/or toxic fumes. 2  Water-sensitive: Potassium cyanide releases highly flammable and toxic hydrogen cyanide gas on contact with water or damp air and in a fire. Water-sensitive: Potassium cyanide releases highly flammable and toxic hydrogen cyanide gas on contact with water or damp air and in a fire. 2  Note: Most foams will react with the agent and release corrosive/toxic gases. 3  For small fires, do not use carbon dioxide; use dry chemical, dry sand, or alcohol-resistant foam.