Tropical bleach

Historically, bleaching powder and tropical bleach were significant sources of available chlorine but very Httle are used today. This is because of the greater availabiUty of sodium hypochlorite solutions and the development of calcium hypochlorite. They are stiU used to sanitize fields, drainage ditches, and reservoirs where its insoluble portion is not important. And, they are important sources of available chlorine within some less developed tropical countries. 

Solid hypochlorites [e.g., high test hypochlorite (HTH), super tropical bleach (STB), and Dutch powder] are also effective in destroying G-series agents. Reaction with hypochlorites, including household bleach, may produce toxic gases such as chlorine. 

If 5.25 percent Sodium Hypochlorite solution is not available then the following decontaminants may be used instead and are listed in the order of preference Calcium Hypochlorite Decontamination Solution No. 2 (DS2), and Super Tropical Bleach Slurry (STB). WARNING Pure, undiluted Calcium Hypochlorite (HTH) will burn on contact with liquid blister agent. 

WARNING Never use dry High Test Hypochlorite (HTH) or Super Tropical Bleach (STB) since they will react violently with T and may burst into flames. 

INCOMPATIBILITY DS2 is a corrosive material and because of its content, it is incompatible with some metals (e.g., cadmium, tin and zinc) some plastics (e.g., Lexan, cellulose acetate, polyvinyl chloride, Mylar, and acrylic) some paints wool leather oxidizing materials (e.g., Super Tropical Bleach or High Test Hypochlorite) and acids. 

Trona deposits, sodium carbonate from, 22 787, 788-790 Tropane, 2 79 Tropical bleach, 4 45, 52 Tropical fishes aquaculture, 3 183 Troposphere, 22 526 Tropospheric ozone, 27 790-793 as greenhouse gas, 2 806, 807t Trost-Tsuji coupling reaction ionic liquids in, 26 890-891 Troubleshooting, technical service and, 24 341-342 Trousers (dress/sport)... 

Othei hypochlorites include calcium hypochlorite, bleach liquor, bleaching powder and tropical bleach, dibasic magnesium hypochlorite, lithium hypochlorite, chlorinated tnsodium phosphate, and hypochlorous acid. 

DS2 is a clear, amber colored liquid effective against all known toxic chemical agents and biological materials (except bacterial spores). It is issued in a 1 1/3 quart can (Mil), 14-Liter container (M13), and 5 gallon container. DS-2 is extremely corrosive and dissolves paint. Since DS-2 is extremely corrosive it is not for use on people or on electronics or other sensitive equipment. DS-2 ignites spontaneously on contact with super tropical bleach (STB) or calcium hypochlorite (HTH). 

STB - Super Tropical Bleach. A decontaminant. Sternutator - A substance that irritates the nasal and respiratory passages and causes coughing and sneezing. 

Tropical bleach is produced by blending bleaching powder with finely divided quicklime which converts any free water into calcium hydroxide. The resulting product is stable at temperatures up to 100 °C. 

The M12A1 Power-Driven Decontamination Apparatus (PDDA) is used to apply decontamination solutions or hot soapy water and rinses during field decontamination operations. The M12A1 PDDA consists of a pump unit, 500-gal tank, personnel shower assembly, and M2 water heater, all of which is mounted on a 5- or 10-ton truck with drop sides (Figure 16-41). The pump assembly can deliver 50 gal of water or super tropical bleach (STB) decontaminating agent per minute at a pressure of 105 psi to the two spray wands. 

M291 Decontamination kit for individual equipment M258 Skin decontamination kit STB super tropical bleach... 

Solid hypochlorites are stable up to 80 °C, their stability depending on the water content, which is < 1 % for bleaching powder, < 0.3 % for tropical bleach. They decompose by reaction with water or by heating to 180 °C. 

Other examples of items in which co-ordination of supply was effected were gas bombs and tropical bleach. Until May 1944 the British supplied the U.S. Eighth Air Force in England with ten thousand phosgene-filled 500-pound bombs. In the fall of 1943 USCWC representatives arranged for the procurement of fifteen thousand tons of tropical bleach from Great Britain, a measure which saved much valuable shipping space. In the summer of 1944 the committee representatives made plans for the supply... 

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