Corrosive Smoke

Corrosive Smoke agents cause inflammation and general destruction of tissues. Inhalation of these agents can cause lung membranes to swell and become filled with liquid (pulmonary edema). Death may result from lack of oxygen. 

Corrosive Smoke agents are hazardous through inhalation as well as skin and eye exposure. Excessive dermal impacts may induce systemic complications. 

Human toxicity data for these agents has not been published or has not been established. However, the industrial IDLH levels for these agents are as low as 3 ppms. 

Tissue damage occurs within minutes of exposure to corrosives. In some cases, clinical effects may not appear for several hours. Pulmonary edema caused by inhalation of the agent vapor may be delayed for several hours. 

Corrosive Smoke agents are colorless to yellow or black solids or liquids with pimgent or biting odors. 

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Fire Resistant Elastomers. The poly(aryloxyphosphazene) elastomers offer excellent fire resistance without incorporating halogen in the polymer or as an additive. These polymers are self-extinguishing in air and generate only moderate non-corrosive smoke and a minimum of toxic combustion products upon combustion (50-53). The poly(aryloxyphosphazene) elastomers (APN ) have excellent potential for applications such as... 

Corrosive Smoke agents are reactive with most materials and rapidly decompose. However, hazardous residue may remain for extended periods. 

Vapors from Corrosive Smoke agents have a density greater than air and tend to collect in low places. Agents are either very soluble in water or are rapidly hydrolyzed. Dilution does not significantly reduce the contact hazard posed by these agents. The liquid density of these agents is greater than that of water. 

Some Corrosive Smoke agents are pyroforic and may spontaneously combust in contact with air. Corrosive Smoke agents are reachve to most metals and organic materials. If these materials are finely divided, interactions may cause spontaneous ignition. Reactions of most Corrosive Smoke agents with water may be violent to the point of explosive. 

The LSOH materials, based on polyolefins, are designed to reduce risks of black corrosive smoke from cable fires and are aimed at low- and medium-voltage uses. While the material is at least twice the cost of PVC, it is not a major factor in total cable costs, depending on the t5q)e and size of cable. On a big cable, the jacket will only be around 3% of the total cost, rising for a small cable to 20%. Market growth was seen as 10% pa with demand around 60-70 ktpa. The total demand for PVC cable compounds is around 1000 ktpa, of which special flame retardant t)q)es take 20%. 

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