Neutralization spillages

Monitor stock, e.g. temperature, pressure, reaction, inhibitor content, degradation of substance, deterioration of packaging or containers/corrosion, leakages, condition of label, expiry date, undesirable by-products (e.g. peroxides in ethers) Spillage control bund, spray, blanket, containment. Drain to collection pit Decontamination and first-aid provisions, e.g. neutralize/destroy, fire-fighting Contain/vent pressure generated to a safe area... 

Liquid spillages may be sueked up by pump and non-toxie solids ean be vaeuumed or brushed up (after wetting down where appropriate). Only small quantities of inert, water-soluble waste should be disearded to drains aeids and alkalis should first be neutralized. 

Wear neoprene gloves,17 laboratory coat, and eye protection. Cover spill with a 1 1 1 mixture by weight of sodium carbonate or calcium carbonate, clay cat litter (bentonite), and sand. Scoop into a beaker or pail. In the fume hood, slowly add the acid mixture to a pail of cold water. When reaction ceases, neutralize with more sodium carbonate if necessary. When solids have settled, decant liquid into drain with 50 times its volume of water. Discard solid residue with normal refuse. Ventilate site of spillage well to evaporate remaining liquid and dispel vapor.18,19... 

It is common practice to equip a drainage system or sump with a pump to return the collected inventory to storage or process facilities. Alternatively, for certain toxic materials, the spill is sometimes altered chemically to a nonhazardous substance by draining the spillage to a basin filled with a neutralizing slurry where the reaction forms an insoluble sludge. For acids, in particular, soda ash, limestone, or weak caustic solutions may be used. The reacted product becomes a solid that is neutral and can be disposed of accordingly. 

Even diluted phosphoric acid is too acidic in forming CBPC. Furthermore, transportation and storage of liquid acid has risks of spillage and accidents. Partially neutralized acid-phosphates, on the other hand, are powders and are less acidic and hence are more suitable for transportation, handling, and storage. Therefore, such acid phosphates are preferred in manufacture of CBPC products. 

The accidental spillage of acid and alkalis in manufacturing plants and laboratories occur on a daily basis. An amphoteric buffer composed of magnesium oxide or hydroxide and magnesium sulfate can be used to not only absorb the liquid spill and suppress the emission of vapors but also neutralize it (McGillivray et al., 2004). This product is sold under the trade name... 

Dilute any spillage with clean water and neutralize with sodium bicarbonate. 

Environmental Readily biodeg. LC50 (fish) 3-20 mg/l, (daphnia, 24 h) 10-50 mg/l EC50 (grn. algae) 10-100 mg/l Precaution Spillages may be slippery Storage Store at neutral pH 30-40 C (bulk), below 50 C Ufarol AM 70 [Unger Fabrikker AS]... 

Neutralize any acid spillage by soda ash and then wash with water. Prevent spreading of this water. Collect it and send to ETR... 

Spillage—do not spray water on the spilled oleum. Absorb spillage of oleum in fly ash, lime powder, or earth. Then remove the material and wash the area with dilute (5%) alkali and then plenty of water. Send wash water to ETP for neutralizing. 

Spillage should be contained/absorbed in ash or earth, then neutralized, and finally disposed of to land fill. No water should be sprayed on SO3 spillage. 

Solid, A dry powder contaminant which is recommended for neutralizing isocyanate spillage by covering spills with a thin layer of the powder which absorbs and destroys the isocyanate in a few minutes is prepared as follows ... 

The company treated the spillage with sodium hypochlorite to neutralize the cyanide. The desired reaction is shown below (McGill and Comba, 1990) ... 

In the event of a large spillage of liquid fluorine, the contaminated area can be neutralized with sodium carbonate. The dry powder can be sprayed on the spill area from a fluidized system similar in principle to that of dry-chemical fire extinguishers. If major spillages occur in areas where the formation of hydrofluoric acid liquid and vapor pose no undue danger, water in the form of a fine mist or fog is recommended. 

To avoid acddental spillage of reagents, the work-bench should be kept as free as possible from encumbrances. Spilled reagent must be immediately treated with much water and then with a neutralizing solution. 

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