项目Item 分析纯 化学纯 优级纯
(AR) (CP) (GR)
含量(CH3OH)Assay,% ≥99.5 99.5 99.5
密度(20℃)Density,g/ml 0.791-0.793 0.791-0.795 0.791-0.793g
水溶性试验Solubility in water 合格 合格 合格
蒸发残渣Evaporation residue,% ≤0.001 0.001
水分(H2O)Water,% ≤0.1 0.3 0.05
酸度(以H+计)Acidity,mmol/100g ≤0.04 0.08 0.002
碱度(以OH-计)Alkalinity,mmol/100g ≤0.08 0.016 0.0001
易碳化物质Readily carbonizable
substance 合格 合格 合格
羰基化合物(以CO计)Carbonly compounds,% ≤0.005 0.01 0.005
还原高锰酸钾物质Potassium 合格 合格 合格
perman-ganate reducing s-
ubstances
无水甲醇：
品级Grade 分析纯，无水级
(AR，anhydrous)
含量(CH3OH)Assay,% ≥ 99.5
沸点Boiling point,℃ 64-65
与水混合试验Miscibility with water 合格
蒸发残渣Evaporation residue,% ≤ 0.05
水份(H2O)Water,% ≤ 0.04
酸度(以H+计)Acidity,m mol/100g ≤ 0.04
碱度(以OH-计)Alkalinity,m mol/100g ≤ 0.01
醛与酮(以CH3COCH3计)Aldehdes and kelones,% ≤ 0.003
还原高锰酸钾物质Potassium permanganate
reducing substances 合格
易炭化物质Readily carbonizable substances 合格
（用于滴定）
项目 色谱纯
( for HPLC, ≥99.9%)
外观Appearance Colorless Liquid
红外光谱鉴别Infrared spectrometry Conforms
纯度Purity (GC) ≥99.90 %
水分Water ≤0.05 % (by Karl Fischer)
蒸发残渣Residue on Evaporation ≤0.0001 %
色度Color Test ≤10 APHA
碳化合物Carbonyl Compounds ≤0.001% （each of Acetone, Formaldehyde, and Acetaldehyde）
可滴定酸Titratable acid ≤0.0003 meq
可滴定碱Titratable base ≤0.0002 meq
λ H2O reference
UV absorption
λ: 205 nm A: ≤1.0
λ: 210 nm A: ≤0.80
λ: 220 nm A: ≤0.20
λ: 230 nm A: ≤0.10
λ: 250 nm A: ≤0.02
λ: 400 nm A: ≤0.005
项目 农残级
(for residue analysis, ≥99.9%)
外观Appearance 无色液体
纯度Purity ≥99.9% (GC)
色度Color scale <10 APHA
水分Water <0.05% (K.F)
酸度Acidity (CH3COOH) <0.003 %
蒸发残渣Residue after evaporation <0.0001 %
halogenated residue (GC/ECD) <10 ng/L (as heptachlor epoxide)
Grade ACS级光谱级
(ACS spectrophotometric grade)
含量assay ≥99.9%
还原高锰酸盐物质MnO4- reducers, passes test
可滴定酸Titrable acid ≤0.0002 meq/g
可滴定碱Titrable base ≤0.0003 meq/g
乙醛acetaldehyde ≤0.001%
丙酮acetone ≤0.001%
甲醛formaldehyde ≤0.001%
水分water ≤0.1%
蒸发残渣Residue after evaporation ≤0.001%
色度color ≤10(APHA)
λ H2O reference
紫外吸收UV absorption
λ: 205 nm A: ≤1.00
λ: 210 nm A: ≤0.80
λ: 220 nm A: ≤0.40
λ: 230 nm A: ≤0.20
λ: 240 nm A: ≤0.10
λ: 260 nm A: ≤0.04
λ: 280 nm A: ≤0.01
λ: 400 nm A: ≤0.01
品级Grade LC-MS级
(for LC-MS,≥99.9%)
外观Appearance Clear Colorless Liquid
荧光Fluorescence 254nm（as Quinine） ≤1 ppb
荧光Fluorescence 365nm（as Quinine） ≤1 ppb
Test for suitability for LC-MS Passes
HPLC Absorbance 254 nm ≤0.005 Abs UN
纯度Purity (GC) ≥99.90 %
水分Water ≤0.02 % (by Karl Fischer)
蒸发残渣Residue on Evaporation ≤0.0005 %
碱度Alkalinity (as NH3) ≤0.0005 %
游离酸Free Acid （as Formic Acid） ≤0.001 %
Aluminum (Al) ≤0.5 ppm
Barium (Ba) ≤0.1 ppm
Cadmium (Cd) ≤0.50 ppm
Calcium (Ca) ≤0.1 ppm
Chromium (Cr) ≤0.02 ppm
Cobalt (Co) ≤0.02 ppm
Copper (Cu) ≤0.01 ppm
Iron (Fe) ≤0.1 ppm
Lead (Pb) ≤0.02 ppm
Magnesium (Mg) ≤0.1 ppm
Manganese (Mn) ≤0.01 ppm
Nickel (Ni) ≤0.02 ppm
Potassium (K) ≤0.1 ppm
Silver (Ag) ≤0.1 ppm
Sodium (Na) ≤0.1 ppm
Tin (Sn) ≤0.1 ppm
Zinc (Zn) ≤0.1 ppm
品级Grade 用于自动多次展开(AMD)技术
(grade AMD, ≥99.9%)
含量assay ≥99.9% (GC)
游离碱free alkali (as NH3) ≤0.0005%
非挥发物non-volatile matter ≤0.0005%
水分water ≤0.02% (Karl Fischer)
荧光fluorescence (quinine) at 254 nm ≤1 ppb
荧光fluorescence (quinine) at 365 nm ≤1 ppb
透光度transmittance
210 nm, ≥30%
220 nm, ≥50%
235 nm, ≥80%
260 nm, ≥98%
abs. HPLC-gradient/230 nm ≤2 mAU
test for AMD technique passes
品级Grade 无丙酮级，用于Romanowsky甲醇染色法
(Acetone free）
外观Appearance Clear Colorless Liquid
颗粒/沉淀物particles/precipitate free
（备注：适合作为固定剂和制备各种Romanowsky型染色液）
品级Grade 蛋白测序级
(for protein sequencing，≥99.9 % )
外观Appearance Clear Colorless Liquid
纯度Purity ≥99.9 %(GC)
蛋白测序测试Test for protein sequencing passes
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