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 6105-01-411-4616
NSN 6610-01-220-9986
NSN 5975-01-535-6604
NSN 6110-01-317-8073
NSN 6685-01-023-2166
NSN 6685-00-023-5933
NSN 6145-00-203-7776
NSN 5925-01-039-4098
NSN 6150-01-205-8476
NSN 5905-00-859-0671
NSN 5960-01-167-8796
NSN 5910-00-076-5532