| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the following problem: although metal calcium is hitherto hermetically sealed in an iron vessel and is stored therein, because metal calcium has a property to react with water, particularly with water content in air, and generates hydrogen which is accumulated during storage and there is a danger of explosion caused by fire, the iron vessel is too heavy to be handled easily. <P>SOLUTION: A coating film, for example, of a metal such as aluminum, of a synthetic resin or of sodium silicate, is formed on a surface of metal calcium to interrupt contact of metal calcium with water. In addition, metal calcium whose surface is covered in this way is put into a bag made of a polyolefin, and the mouth of the bag is hermetically sealed so as to interrupt contact with moisture. <P>COPYRIGHT: (C)2012,JPO&INPIT |
