項目Item 分析純
(AR)
純度Purity ≥99.0% (GC)
比重Specific gravity (20/20°C) 0.9385-0.9420
沸程Boiling range,℃ 165-167(95%)
游離酸(以CH3COOH計)Free acid,% ≤0.001
折光率Refractive index n20/D 1.437-1.439
灼燒殘渣Ignition residue,% ≤0.005
水份Water,% ≤0.05
混合度Miscibility 合格
項目 優級純
(GR)
外觀Appearance 清澈、無懸浮物
純度Purity ≥99.9% (GC)
色度Color scale,Hazen單位 ≤10(鉑-鈷色號)
水water ≤250 ppm
鐵Iron(Fe) ≤0.050ppm
酸度Acidity(乙酸計) ≤100.0ppm
堿度alkalinity(二甲胺計) ≤5.0ppm
電導率conductivity(25℃) ≤0.50 us/cm
項目 化學純
(CP)
純度Purity ≥98.0% (GC)
沸程Boiling range,℃ 164.0~167.0
比重Specific gravity (20/20°C) 0.938~0.942
折光率Refractive index n20/D 1.437~1.439
酸度Acidity(以H+計)/(mmol/100g) ≤0.002
水分water ≤0.10%
項目 色譜純
(HPLC)
純度Purity ≥99.8% (GC)
紫外吸光度UV Absorbance:
最大吸收波長Wavelength (nm) Max. Absorbance
268 1.000
275 0.300
300 0.080
350 0.005
400 0.005
溶劑洗脫雜質GC Impurities Eluting Before Solvent <0.5 mg/L
水分Water <0.03%
(色譜純用于HPLC, GC和光譜級,氮氣封裝。)
品級Grade 光譜級
(spectrophotometric grade)
外觀Appearance 白色至米黃色粉末
紅外光譜鑒別Infrared spectrometry Conforms
純度Purity ≥99.8% (GC)
λ H2O reference
UV Absorbance 400nm ≤0.01
UV Absorbance 360nm ≤0.01
UV Absorbance 320nm ≤0.03
UV Absorbance 310nm ≤0.05
UV Absorbance 290nm ≤0.15
UV Absorbance 280nm ≤0.30
UV Absorbance 270nm ≤1.0
水分Water (by Karl Fischer) ≤0.05 %
蒸發殘渣Residue on Evaporation ≤0.001 %
品級Grade 多肽合成級
(grade for peptide synthesis)
外觀Appearance 透明液體
紅外光譜鑒別Infrared spectrometry Conforms
純度Purity ≥99.8% (GC)
水分water ≤0.02%
胺測試實驗suitability in amine test pass test
品級Grade 紫外光譜級
(grade for UV-spectroscopy )
純度Purity ≥99.8% (GC)
λ 1 cm path, H2O reference
UV absorption
λ: 280 nm ≤0.3
λ: 290 nm ≤0.15
λ: 310 nm ≤0.05
λ: 320 nm ≤0.03
λ: 360 nm ≤0.005
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