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項(xiàng)目 分析純
(AR)
不飽和化合物unsaturated禁發(fā)網(wǎng)址pounds ≤0.75%
沸程boiling range 96.0～98.0℃
含量Assay ≥99.0%
相對(duì)密度Specific gravity (20/20°C) 0.803～0.805
醛aldehydes ≤0.2%
酸度Acidity(以H+計(jì))/（mmol/100g） ≤0.05
折光率Refractive index n20/D 1.3845～1.3855
蒸發(fā)殘?jiān)麰vaporation residue ≤0.002%
酯ester ≤0.1%
項(xiàng)目 化學(xué)純
(CP)
不飽和化合物unsaturated禁發(fā)網(wǎng)址pounds ≤0.1%
沸程boiling range 96.0～98.0℃
含量Assay ≥98.5%
相對(duì)密度Specific gravity (20/20°C) 0.803～0.805
醛aldehydes ≤0.2%
酸度Acidity(以H+計(jì))/（mmol/100g） ≤0.1
折光率Refractive index n20/D 1.384～1.386
蒸發(fā)殘?jiān)麰vaporation residue ≤0.003%
酯ester ≤0.1%
項(xiàng)目 色譜純
(HPLC)
外觀Appearance 無(wú)色透明液體
純度Purity >99.8% (GC)
非揮發(fā)性物質(zhì)Non-volatile matter
<0.0003 % >游離酸Free acid (C3H6O2)
<0.001 % >水份Water
<0.05 % >紫外吸光值UV (1 cm cell vs HPLC級(jí)水) ：
210 nm A:
<0.70 > 220 nm A:
<0.3 > 250 nm A:
<0.05 >
ACS級(jí)
項(xiàng)目名稱(chēng)Item ACS Grade
含量Assay ≥99.5%
溶解性試驗(yàn)Solubility in water Passes
色度，黑曾單位Color(APHA) 10
蒸發(fā)殘?jiān)黂esidue after evaporation ≤0.001%
可滴定酸Titrable acid ≤0.0004meq/g
羰基化合物(以C2H5OH計(jì))Carbonly禁發(fā)網(wǎng)址pounds ≤0.03%
乙醇Ethyl alcohol ≤0.01%
甲醇Methanol ≤0.01%
異丙醇Isooropyl alchol ≤0.05%
水Water ≤0.2%
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