二氧化碳
性狀
本品為無色氣體;無臭;水溶液顯弱酸性反應(yīng)。本品1容在常壓20℃時(shí),能溶于水約1容中。
鑒別
(1)取本品,通入氫氧化鋇試液中,即生成白色沉淀;沉淀能在醋酸中溶解并發(fā)生泡沸。(2)本品能使火焰熄滅。(3)本品的紅外光吸收?qǐng)D譜應(yīng)與對(duì)照的圖譜(圖1)一致(通則0402)
檢查
酸度取水100ml,加甲基橙指示液0.2ml,混勻,分取各50ml,置甲、乙兩支比色管中,于乙管中,加鹽酸滴定液(0.01mol/L)1.0ml,搖勻;于甲管中,通入本品1000ml(速度為每小時(shí)4000ml)后,顯出的紅色不得較乙管更深。
浩瀚色譜（山東）應(yīng)用技術(shù)開發(fā)有限公司，依據(jù)藥典的要求，提供氣體流量計(jì)，歡迎咨詢。
名稱：氣體流量計(jì)
型號(hào)：LZB-3
接口：1/8卡套
應(yīng)用：2020年版藥典二氧化碳
carbon dioxide
character
This product is a colorless gas; Odorless; The aqueous solution exhibits weak acidic reactions. This product is soluble in approximately 1 volume of water at atmospheric pressure of 20 ℃.
distinguish
(1) Take this product and pour it into the barium hydroxide test solution to form a white precipitate; Precipitation can dissolve in acetic acid and undergo boiling. (2) This product can extinguish flames. (3) The infrared absorption spectrum of this product should be consistent with the control spectrum (Figure 1) (General Rule 0402)
inspect
Take 100ml of water for acidity, add 0.2ml of methyl orange indicator solution, mix well, take 50ml of each, place them in two colorimetric tubes A and B, add 1.0ml of hydrochloric acid titrant (0.01mol/L) in tube B, shake well; After introducing 1000ml of this product into tube A (at a speed of 4000ml per hour), the red color should not be darker than that of tube B.
Haohan Chromatography (Shandong) Application Technology Development Co., Ltd. provides gas flow meters according to the requirements of the Pharmacopoeia. Welcome to consult.
Name: Gas Flowmeter
Model: LZB-3
Interface: 1/8 card sleeve
Application: 2020 Pharmacopoeia Carbon Dioxide
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