Sanitation Standards for Butane to be Used in Food Article 4

┌──────────┬───────────────────┐│ Item │ Standards │├──────────┼───────────────────┤│Purity │Not less than 94% (v/v) │├──────────┼───────────────────┤│Characteristics │Colorless, and flammable gas the ││ │flavor of natural gas │├──────────┼───────────────────┤│Boiling temperature │-11 ℃ │├──────────┼───────────────────┤│Infrared absorption │The spectrum of a sample exhibits ││spectrum │absorptions,at approximately ││ │3.4 μ m(vs), 6.8 μ m(s), 7.2μm(m ││ │ and 10.9μm (m). │├──────────┼───────────────────┤│Moisture content │Not exceed 0.005 % │├──────────┼───────────────────┤│High-boiling residue│Not exceed 5 mg/kg │├──────────┼───────────────────┤│Acidity of │Add 10 mL of water to the sample, mix ││high-boiling residue│by swirling for about 30 s, add 2 ││ │drops of methyl orange TS, insert the ││ │stopper in the tube, and shake the ││ │tube vigorously. No pink or red color ││ │appears in the aqueous layer. │├──────────┼───────────────────┤│Sulfur compounds │The gas is free from the ││analysis │characteristic odor of sulfur ││ │compounds. │└──────────┴───────────────────┘
中文原文 食品用丁烷衛生標準第4條
食品用異丁烷應符合下列標準:┌──────────┬───────────────────┐│項目│標準│├──────────┼───────────────────┤│純度│94%(v/v)以上│├──────────┼───────────────────┤│性狀│無色、天然氣味道,具易燃性之氣體。
│├──────────┼───────────────────┤│沸點│-11℃│├──────────┼───────────────────┤│紅外線吸收光譜(│約於光譜上3.4μm(很強吸收),6.8││Infraredabsorption│μm(強吸收),7.2μm(中度吸收)及││spectrum)鑑別試驗│10.9μm(中度吸收)的區域呈現吸收反應│││。
│├──────────┼───────────────────┤│水分含量│0.005%以下│├──────────┼───────────────────┤│揮發殘渣│5mg/kg以下││(High-boiling│││residue)││├──────────┼───────────────────┤│揮發殘渣之酸度試驗│將殘渣加入水10mL,旋轉搖晃混合30秒│││後,加入甲基橙試劑(methylorangeTS)│││2滴,將試管口塞住,震盪混合後觀察呈色│││反應,水溶液不應轉變成粉紅色或紅色。
│├──────────┼───────────────────┤│含硫成分之試驗│以鼻嗅聞,不應有硫磺成分之特異性氣味。
│└──────────┴───────────────────┘

English translation for reference only; the Chinese text prevails. Not legal advice.