A colorless,non-flammable,high pressure gas.(一種無(wú)色,不燃,高壓氣體) Formula(分子式): He Molecular weight(分子量): 4.003 Boiling point(沸點(diǎn)): -268.94℃,452.1°F; Melting point(融點(diǎn)): -272.2℃,-457.96°F. Specific Volume(比容): 6.06m3/kg(21.1℃,101.325KPa) 97.1ft3/lb(70°F,14.696psia) UN Number(UN號(hào)碼): UN1046 DOT Classification(DOT類別): 2.2(Nonflammable Gas)(不燃性氣體) DOT Label(DOT標(biāo)簽): NON-FLAMMABLE GAS(不燃性氣體) Cylinder Connection(鋼瓶接口): CGA/DISS/JIS--580/718/W22-14R Grsde(級(jí)別) 6N Purity(純度) 99.9999% Guaranteed Specification(保證規(guī)格)
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