Any material or mixture that, when enclosed in a container, has an absolute pressure exceeding 40 psi at 21.1 C or, regardless of the pressure at 21.1 C, has an absolute pressure greater than 104 psi(a) at 54.4 C, or any flammable material having a vapor pressure greater than 40 psi abs at 37.7 C (vapor pressure determined by Reid method (ASTM)). Compressed gases include liquefied petroleum gases and oxygen, nitrogen, anhydrous ammonia, acetylene, nitrous oxide, and fluorocarbon gases. Some of these are shipped in tonnage volume. For details on properties, containers, and shipping regulations, see the entries for specific gases.
Hangzhou ZeErRui Chemical Co., Ltd. Hangzhou ZeErRui Chemical Co., Ltd. located in Lingang industrial areas, our plant covers an area of 6000 square me.. Tianjin YR ChemSpec Technology Co.,Ltd. YR Chemspec?is a qualified manufacturer and supplier which audited and approved by SGS and ISO,we are strictly foll.. Nanjing Freehoo Chemical Co., Ltd. Nanjing Freehoo Chemical Technology Co., Ltd. was founded in 2012. since then we have been committed to the resea..