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執行標準 ： GB/678-2002
項目Item 優級純 分析純 化學純
(GR) (AR) (CP)
含量(CH3CH2OH),% ≥99.8 99.7 99.5
密度(20℃)Density,g/mL 0.789-0.791 0.789-0.791 0.789-0.791
與水混合試驗Miscibility with water 合格 合格 合格
蒸發殘渣Evaporation residue,% ≤0.0005 0.001 0.001
水份(H2O)Water,% ≤0.2 0.3 0.5
酸度(以H+計)Acidity,mmol/100g ≤0.02 0.04 0.1
堿度(以OH-計)Alkalinity,mmol/100g ≤0.005 0.01 0.03
甲醇(以CH3OH計)Methanol,% ≤0.02 0.05 0.2
異丙醇[(CH3)2CHOH] ≤0.003 0.01 0.05
羥基化合物(以CO計)Carbonyl compounds ≤0.003 0.003 0.005
還原高錳酸鉀物質(以O計)Potassium ≤0.00025 0.00025 0.0006
permanganate reducing substances
易碳化物質Readily carbonizable
substances 合格 合格 合格
鐵(Fe)Iron,% ≤0.00001 -- --
鋅(Zn)Zinc,% ≤0.00001 -- --
ACS級
項目名稱Item ACS Grade
含量Assay(CH3CH2OH) ≥99.5%
水分(H2O)Water ≤0.2%
色度Color(APHA) 10
水溶解試驗Solubility in water Passes test
蒸發殘渣Residue after evaporation ≤0.001%
丙酮異丙醇試驗Acetone,isopropyl alcohol ≤Passes test
可滴定酸Titrable acid ≤0.0005meq/g
可滴定堿Titrable base ≤0.0002meq/g
甲醇Methanol(CH3OH) ≤0.1%
硫酸變黑物substances darkened by sulfuric acid Passes test
還原高錳酸鹽物質Substances reducing permanganate Passes test
品級Grade 光譜純
(for HPLC grade)
純度Purity ≥99.8% (GC)
λ 1 cm path, H2O reference
吸光度
λ:210nm ≤1.0
λ:225nm ≤0.26
λ:240nm ≤0.10
λ: 254 nm ≤ 0.02
λ:260nm ≤0.01
熒光度(奎寧)254nm ≤1ppb
熒光度(奎寧)365nm ≤1ppb
游離酸(CH3COOH) ≤0.001%
不揮發物 ≤0.001%
水分 ≤0.2%
品級Grade 色譜純
(HPLC)
純度Purity ≥99.8% (GC)
游離酸free acid (as CH3COOH) ≤0.001%
非揮發性物質non-volatile matter ≤0.001%
水分water≤0.2% (Karl Fischer)
熒光度(奎寧)fluorescence (quinine)at 254 nm ≤1 ppb
熒光度(奎寧)fluorescence (quinine) at 365 nm ≤1 ppb
透光率transmittance
210 nm, ≥20%
225 nm, ≥50%
240 nm, ≥80%
260 nm, ≥98%
品級Grade 分子生物學專用
(for molecular biology, ≥99.8%)
含量assay ≥99.8%
DNA酶DNases, none detected
高錳酸鉀還原物質KMnO4-reducing substances, in accordance
RNA酶RNases, none detected
不溶物insoluble matter, passes filter test
磷酸酶phosphatases, none detected
蛋白酶proteases, none detected
遇硫酸變黑物質substances darkened by H2SO4, in accordance
游離堿free alkali (as NH3) ≤0.0004%
醛aldehyde (as CH3CHO) ≤0.001%
甲醛formaldehyde (as HCHO) ≤0.001%
酮ketone (as CH3COCH3) ≤0.001%
游離酸free acid (as CH3COOH) ≤0.002%
甲醇methanol (CH3OH) ≤0.1%
水分water ≤0.02%
蒸發殘渣evapn. residue ≤0.001%
Al: ≤0.5 ppm
Ba: ≤0.1 ppm
Bi: ≤0.1 ppm
Ca: ≤0.5 ppm
Cd: ≤0.05 ppm
Co: ≤0.02 ppm
Cr: ≤0.02 ppm
Cu: ≤0.1 ppm
Fe: ≤0.1 ppm
K: ≤0.5 ppm
Li: ≤0.1 ppm
Mg: ≤0.1 ppm
Mn: ≤0.02 ppm
Mo: ≤0.1 ppm
Na: ≤1 ppm
Ni: ≤0.02 ppm
Pb: ≤0.1 ppm
Sr: ≤0.1 ppm
Zn: ≤0.1 ppm
λ neat
紫外吸收UV absorption
λ: 260 nm ≤0.04
λ: 280 nm ≤0.03
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