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 5965-00-099-0698
NSN 5835-01-285-1897
NSN 5905-01-234-3060
NSN 5950-01-237-3406
NSN 5935-01-571-4486
NSN 5990-00-615-7111
NSN 5910-00-132-5402
NSN 5990-01-040-1320
NSN 5905-00-990-5398
NSN 6130-01-322-8507
NSN 6650-01-619-2129
NSN 6645-00-806-6961