草酸銨的化學(xué)性質(zhì),質(zhì)量標(biāo)準(zhǔn)及用途
草酸銨性狀 :無(wú)色結(jié)晶或顆粒。無(wú)氣味,有毒,加熱即分解
熔點(diǎn) 133 °C (dec.)(lit.)
密度 1.5
儲(chǔ)存條件 Store at RT.
溶解度 H2O: 0.1 M at 20 °C, clear, colorless
水溶解性 45 g/L (20 ºC)
質(zhì)量標(biāo)準(zhǔn) :
項(xiàng)目名稱(chēng)Item : ACS Grade
含量[(COONH4)2·H2O]Assay 97.0-101.0%
水不溶物Insoluble matter ≤0.002%
灼燒殘?jiān)黂esidue after ignition ≤0.02%
氯化物(Cl)Chloride(Cl) ≤0.002%
硫酸鹽(SO4)Sulfate ≤0.002%
重金屬(以Pb計(jì))Heavy metals(as Pb) ≤5ppm
鐵(Fe)Iron(Fe) ≤2ppm
HG/T 3-976-81
項(xiàng)目Item 優(yōu)級(jí)純 分析純 化學(xué)純
(GR) (AR) (CP)
含量[(NH4)2C2O4· H2O)]Assay,% ≥99.8 99.8 99.5
水溶液反應(yīng)Solution reaction 合格 合格 合格
澄清度試驗(yàn)Clarity 合格 合格 合格
水不溶物Insoluble matter in water,% ≤0.003 0.005 0.015
灼燒殘?jiān)ㄒ粤蛩猁}計(jì))Ignition residue,% ≤0.005 0.01 0.03
氯化物(Cl)Chloride,% ≤0.0005 0.001 0.002
硫化合物(以SO4計(jì))Sulfur compounds,% ≤0.005 0.01 0.02
鐵(Fe)Iron,% ≤0.0002 0.0005 0.001
重金屬(以Pb計(jì))Heavy metals,% ≤0.0002 0.001 0.0015
99.99% metals basis:
外觀Appearance White Powder or Crystalline Powder
紅外光譜鑒別Infrared spectrometry Conforms to Structure
純度Purity ≥99.99% Based on Trace Metals Impurities of ICP
C2O4 (Titration with Kmno4) 60.4% - 64.1%
痕量金屬分析total metallic impurities ≤100ppm by ICP Atomic emission
用途: 析鈣、鉛稀土元素等。塑料、金屬磨光劑,血液常規(guī)檢查
貯存 :密封干燥保