性质 Properties 本品为白灰色粉末，熔点：680℃，自燃点或引燃温度：200℃，常温常压下稳定，不得与氧化物，酸，水或潮湿空气及酒精等物体接触。必须储存在惰性气体中并存放在阴凉、干燥、通风处。 The pure substance of this product is white grey powder. Melting point: 680℃, kindling point: 200℃. It is stabile under normal temperature and pressure. It can not be touch with oxide, acid, **, moist air and alcohol etc. It must be stored in the inert gas in a cool, dry ventilated place.   用途 Usage     在有机合成中用作还原剂，及核能工业，光导纤维工业。 It is used as reducing agent in organic synthesis, nuclear energy industry and optical fiber industry.