Fumes, hazardous

Synthetic resins are extensively used, e.g., in surface finishes, in the fabrication and repair of boat and motor vehicle bodies, in the manufacture of laminated boards, for electrical components, in pattern making and in paints and varnishes. Non-rubber adhesives made from fish glues and from cotton derivatives (e.g. cellulose acetate) tend not to be sensitizing but, depending upon composition and the manner of use, many other types may pose significant dermatitic and fume hazards. 

Enclosure takes the concept of isolation still further. In this approach, the complete operation is physically enclosed by an impervious barrier, perhaps metal or plastic, with access allowed only occasionally by suitably protected maintenance workers or in emergencies. This approach might be found, for example, in sand-blasting operations, in conditions where there is a severe fume hazard, or perhaps, as seen in the cautionary tale about Jake Whitman, in a continuous lead-quenching bath operation. It should be noted that in most instances, exhaust ventilation of the enclosed area should also be undertaken. 

Noncombustible. Materials their packa ng which will neither igpite nor support combustion AO combustible materials are dangerous in a fire and/or expin, both because heat will cause them to catch fire and add to the smoke fume hazard, and because small explosions are known to scatter clouds of flammable dusts which in turn cause still greater explns than the original ones(Ref 3)... 

EXPLOSION and FIRE CONCERNS flammable liquid NFPA rating Health 1, Flammability 3, Reactivity 0 volatile vapors may travel considerable distance to source of ignition and flashback vapor may explode if ignited in a confined area incompatible with nitrates, strong oxidizers, strong alkalies and acids decomposition liberates toxic fumes hazardous combustion or decomposition products include carbon monoxide and carbon dioxide use carbon dioxide, dry chemical powder, and alcohol-resistant foam for firefighting purposes. 

Precaution Dangerous incompat. with acid or acid fumes Hazardous Decomp. Prods. Heated to decomp, or on contact with acid or acid fumes, emits highly toxic fumes of SO, and NO,... 

The first of these may be viewed as a sort of half-way house where toxic by-products may still be formed but where their emissions are controlled. For example, changes in the type of accelerator will modify the type of amine produced. Thus if the concern is with a fume hazard, a less volatile amine might be generated (e.g. dibutylamine instead of... 

Precaution Combustible flamm. limits 13-9.5% noncorrosive incompat. with strong oxidizing or redudng agents heated to decomp., emits CO and NO fumes Hazardous Decomp. Prods. CO, oxides of nitrogen HMIS Health 2, Flammability 2, Reactivity 0... 

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