性状 微有乙醇样气味,易挥发,易流动,燃烧时无烟有蓝色火焰,能与水、醇、醚等有机溶剂互溶,能与多种化合物形成共沸混合物,能与多种化合物形成溶剂混溶,溶解性能优于乙醇,能溶解多种无机盐类,如碘化钠、氯化钙、硝酸铵、硫酸铜、硝酸银、氯化铵和氯化钠等。易燃,蒸气能与空气形成爆炸极限6.0%-36.5%(体积)。有毒,一般误饮15ml可致眼睛失明,一般致死量。 密度:0.7915 熔点:-97.8℃ 沸点:64.7℃ 闪点:12℃ 折光率n20/D:1.3292 质量标准 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
品级Grade 梯度级 (gradient grade, for HPLC, ≥99.9% ) 外观Appearance Colorless liquid 纯度Purity (GC) ≥99.90 % 水分Water (by Karl Fischer) ≤0.02 % 蒸发残渣Residue on Evaporation ≤0.0005 % 碱度Alkalinity ≤0.0005 %(As NH3) 紫外吸收UV Absorbance 260nm ≤0.01 紫外吸收UV Absorbance 235nm ≤0.10 紫外吸收UV Absorbance 220nm ≤0.30 紫外吸收UV Absorbance 210nm ≤0.50 HPLC吸收HPLC Absorbance 230 nm ≤2 mAU HPLC吸收HPLC Absorbance 254 nm ≤5 mAU 荧光Fluorescence 254nm ≤1.0 ppb(As Quinine)
品级Grade ACS级 (ACS, ≥99.8% ) 外观Appearance Colorless liquid 红外光谱Infrared spectrum Conforms to Structure 色度Color Test ≤10 APHA 纯度Purity (GC) ≥99.80 % 水分Water (by Karl Fischer) ≤0.1 % 蒸发残渣Residue on Evaporation ≤0.001 % 溶解试验Solubility Pass 羰基化合物Carbonyl Pass 硫酸黑化物质Substance darkened by H2SO4 Pass MnO4还原物质Substances reducing MnO4 Pass 可滴定酸Titratable acid ≤0.0003 meq 可滴定碱Titratable base ≤0.0002 meq
品级Grade HPLC, 用于制备 (for HPLC,≥99.5% ) 外观Appearance Colorless liquid 红外光谱Infrared spectrum Conforms to Structure 紫外吸光度UV Absorbance 400nm ≤0.005 250nm ≤0.02 230nm ≤0.10 220nm ≤0.20 210nm ≤0.80 205nm ≤1.0 荧光Fluorescense 365nm ≤1.0 ppb (as Quinine) 254nm ≤1.0 ppb (as Quinine) HPLC吸光度HPLC Absorbance 230nm ≤2mAU 254 nm ≤5mAU 纯度Purity (GC) ≥99.90 % 水分Water (by Karl Fischer) ≤ 0.05 % 蒸发残渣Residue on Evaporation ≤0.0001 % 色度Color Test ≤10 APHA 可滴定酸Titratable Acid ≤0.0003 贮存 密封阴凉处保存。 用途 分离硫酸钙和硫酸镁, 与异丁醇混合分离锶和钡的溴化物。检验和测定硼, 溶剂, 有机合成的甲基化剂, 防冻剂, 萃取剂, 清洗剂, 稀释剂, 脱水剂, 浸出剂。 联合国编号 1230 Risk: R11- R23/24/25- R39/23/24/25- Safety : S16 - S36/37 - S45 - S7 -
|