Methylene chloride must be refrigerated until ready to use, not an explosive; used un calibration of devices used to detect explosives; which have nitrogen present
NSN 5985-00-578-5747
NSN 5998-00-473-0819
NSN 5950-00-726-9849
NSN 5855-01-461-8169
NSN 5996-01-377-9730
NSN 6145-00-952-1735
NSN 5910-00-156-0993
NSN 5915-01-113-9045
NSN 5950-01-602-8755
NSN 6135-01-466-3980
NSN 4140-01-659-3953
NSN 6145-00-072-4878