Product Name: Propyne C3H3 Propyne may burn and explode when exposed to heat sources and open flames. The gas is heavier than air and can spread to a considerable distance at a lower place, and will ignite when it encounters a fire source. Acute inhalation can irritate the respiratory tract, cause bronchitis and pneumonia; and has anesthetic effect. Transportation DOT Shipping Name Propyne DOT Classification 2.1 DOT Label Flammable UN Number UN1954 CAS No. 74-99-7 CGA/DISS/JIS 330/642/W22-14L Shipped as Gas
