sp gr การใช้

• Molar weight 152.07, N 18.42 %, OB to CO 2 0 %, OB to CO + 21 %; colorless volatile liquid when in pure state; yellowish liquid in crude state; sp gr 1.488 at 20 / 4?or 1.480 at 25? n _ D 1.4452 at 25?or 1.4472 at 20? freezing point-22.75?( versus + 13.1?for NG ); frozen point given in is-22.3? boiling point 199?at 760mm Hg ( with decomposition ).