22 



The Philippine Journal of Science 



Table I. — Decomposition of chloride of lime in the dark.' 







s5 





















Time. 



■S,; £ 



















< 



Hrs. mins. 













b37.2 







6 



36.0 







11 



35.5 







15 



35.1 



1 



14 



34.8 



5 



43 



34.4 



23 



34 



33.1 



29 



15 



33.0 



48 







32.5 



70 







31.0 



98 







30.6 



194 







29.6 



890 







26.6 



IN 5 LITERS DIS- 

 TILLED WATER 

 PLUS 0. 1 GRAM 

 AMMONIUM 

 ACETATE. 



IN SEWAGE. 



Time. 



i" 



O OS o 



hi 



>X p. 

 < 



Hrs. mins. 

 

 6 

 12 



37 

 3 30 

 5 

 5 35 

 22 

 46 

 73 

 145 



t>36.0 

 35.0 

 34.2 

 30.8 

 30.7 

 5.00 

 4.75 

 4.47 

 3.78 

 3.15 

 2.8 











b38. 4 







4 



37.9 



o 



10 



34.2 







16 



34.2 







54 



33.9 



5 







33.5 



23 







32.7 



30 







32.4 



54 







31.5 



70 







31.0 







t>37. 



4 



9.6 



9 



4.5 | 



17 



2.7 



55 



2.4 



3 46 



1.9 



3 51 



2.0 



23 



1.4 



! 



Time. 



1 Available chlo- 

 | rine. Parts 

 1 per million. 







Hrs. mins. 













b228.0 







2 



116.0 







6 



100. 0(?) 







9 



38.0 







15 



35.2 







49 



30.5 



21 



20 



22.0 



45 







14.5 











213.0 



o 



2 



190.0 







4 



176.0 







5 



161.0 







7 



147.0 







8 



127.5 



o 



11 



102.0 







13 



78.6 







15 



65.5 







17 



55.8 ! 







20 



41.2 







22 



37.2 







25 



35.5 







28 



35.4 







32 



33.3 ; 



1 



1 



29.4 



1 



11 



28.7 



2 



29 



20.7 



alts were verified by R. H. 



molar oxalic acid solution 



■ In this and subsequent tables some of the experimental r 

 Aguilar, chemist, Bureau of Science. 



b Calculated. 



c The decomposition of hypochlorite proceeded so rapidly in 

 that it could not be followed quantitatively. 



Table II. — Decomposition of a solution of chloride of lime in tap water 

 in diffused daylight. 



Time. 



Available 

 chlorine. 



Parts per 

 million. 



Time. 



Available 

 chlorine. 

 Parts per 

 million. 



Hrs. mins. 







2 



30 



2 00 



0.8 

 0.6 

 0.3 

 trace 



Hrs. mins. 

 

 2 



45 

 1 25 

 3 45 



10.0 

 9.7 

 8.5 

 7.9 

 7.0 







