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Mixtures of powdered trichloroisocyanuric Acid (TCCA) and Guar gum

At 7:30 on August 9, 2009, Lung Poon Road is located in Nanjing, Nanjing Sports School swimming pool, the staff Wang accidentally hydrogen partial disinfectant trichloroisocyanuric Acid (TCCA) (disinfectant) scattered in the pool aisle, followed by trying to rinse with water, hydrogen trichloroisocyanuric acid water to produce volatile toxic gases. Although the museum took immediate windows open for ventilation, evacuation swimmers and other measures, but there are still some bathers inhalation of harmful gases, resulting in a total of 28 events out Bathers admission examination, including four serious cases. Source: China Agricultural Network (Agronet.com.cn)
Mixtures of granular trichloroisocyanuric acid (TCCA) (CDB 90®Olin Corporation, Stamford, Conn.) with unmodified corn, wheat, potato, and rice starches were prepared according to the method of Example 1-2. The mixture of unmodified corn starch contained 2.5 wt % corn starch and 97.5 wt % trichloroisocyanuric Acid (TCCA). The mixtures with wheat, potato and rice starches contained 2 wt % starch and 98 wt % TCCA. A tabletting die was charged with 14 grams of the each of the mixtures and the mixtures compressed at 9,000 psi to produce a tablet of each mixture. To determine the disintegration rate of the tablets, a tablet was placed into an 8 oz. jar filled with tap water (25° C.) and the time measured for the tablet to completely disintegrate and disperse the TCCA to form a mound of trichloroisocyanuricacid granules at the bottom of the jar. The disintegration time of the tablet containing 2.5 percent by weight of unmodified corn starch was 4 minutes. The tablets containing mixtures of TCCA with wheat starch, potatostarch, and rice starch only partially disintegrated with the outer edges of the tablets crumbling but the rest of the tablet remaining in tact without any visible further disintegration for an extended period of time.
Mixtures of powdered trichloroisocyanuric Acid (TCCA) and Guar gum at additive levels of 0.5%, 1%, 1.5%, 2%, and 2.5%. were prepared, the trichloroisocyanuric acid being theonly other component. Each of the mixtures was compressed using the method of Example 1 at 10,000 psi into tablets containing 15 grams of the mixture. The disintegration time for a tablet of each of the mixtures was determined by placing the tablet in an 8 oz. jar filled with tap water (25° C.) and measuring the time for the tablet to completely disintegrate. Each of the tablets completely disintegrated within 3 minutes.