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 2925-00-010-9609
NSN 5965-01-362-9609
NSN 6130-01-391-7451
NSN 6240-01-269-0375
NSN 6130-00-504-2695
NSN 6610-01-077-6783
NSN 5999-01-032-5527
NSN 5996-01-030-1387
NSN 6145-01-498-8478
NSN 5930-01-429-8443
NSN 7035-01-432-2424
NSN 6130-01-618-2472