化学品危险性类别与标志－第7类放射性化学品
该类化学品系指放射性比活度大于74×10 4Bq/kg的化学品。如：硝酸钍、夜光粉等。
根据放射性比活度的强弱不同，其标志分别为一级放射性物品、二级放射性物品和三级放射性物品，见图13、14、15。
![](https://wkrtcs.bdimg.com/rtcs/image?w=235.00&md5sum=f59f8a2bea32c31e3a4cd98a0a1af853&sign=3ce9929df9&rtcs_flag=2&rtcs_ver=3&l=webapp&bucketNum=110&ipr={"t":"img","r":"r_5","w":"235.00","h":"365.00","dataType":"png","c":"word/media/image1.png","imgOriW":235,"imgOriH":365})
图13
![](https://wkrtcs.bdimg.com/rtcs/image?w=232.00&md5sum=f59f8a2bea32c31e3a4cd98a0a1af853&sign=3ce9929df9&rtcs_flag=2&rtcs_ver=3&l=webapp&bucketNum=110&ipr={"t":"img","r":"r_5","w":"232.00","h":"363.00","dataType":"png","c":"word/media/image2.png","imgOriW":232,"imgOriH":363})
图14
![](https://wkrtcs.bdimg.com/rtcs/image?w=245.00&md5sum=f59f8a2bea32c31e3a4cd98a0a1af853&sign=3ce9929df9&rtcs_flag=2&rtcs_ver=3&l=webapp&bucketNum=110&ipr={"t":"img","r":"r_5","w":"245.00","h":"373.00","dataType":"png","c":"word/media/image3.png","imgOriW":245,"imgOriH":373})
图15
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