6830-01-493-5659 (ASTM)
NSN 6830-01-493-5659 (NIIN 01-493-5659) is a butane-propane mixture in Federal Supply Class 6830, Gases: Compressed And Liquefied — a mixture consisting predominantly of butanes and/or butylenes with propane and/or propylene. Manufacturer part number ASTM; also referenced as ASTM D 1835 (American Society For Testing And).
NIIN assigned January 2002; DEMIL A (none required); unit of issue GL (gallon), $3.89 gov standard price.