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 5999-01-179-9566
NSN 5965-01-063-7894
NSN 5905-01-205-4952
NSN 6620-00-663-8962
NSN 5999-01-529-5263
NSN 6105-01-328-6473
NSN 5925-01-065-4091
NSN 6650-00-211-6302
NSN 4140-01-013-6807
NSN 5985-01-088-3262
NSN 5835-00-833-7080
NSN 6645-00-947-0625