| 摘要 |
<p>1,252,835. Calcium hypochlorite. PENNWALT CORP. 12 Aug., 1969 [4 Sept., 1968], No. 40346/69. Heading C1A. A free flowing, granular (0À075-2 mm.), dust free calcium hypochlorite containing 4-15% H 2 O is produced by adding water to dry material. Preferred water content is 7-12%.</p> |
