性状 无色澄清液体,有愉快的气味和灼烧味,易流动,极易从空气中吸收水分,能与水和氯仿、乙醚等多种有机溶剂混溶。能与水形成共沸混合物(含水4.43%),易燃。蒸气与空气能形成爆炸性混合物,爆炸极限3.5%-18.0%(体积)。 密度:0.789 熔点:-114.1℃ 沸点:78.5℃ 闪点:13℃ 折光率n20/D:1.361 质量标准 执行标准 : GB/678-2002 项目Item 优级纯 分析纯 化学纯 (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 与水混合试验Miscibility with water 合格 合格 合格 蒸发残渣Evaporation residue,% ≤0.0005 0.001 0.001 水份(H2O)Water,% ≤0.2 0.3 0.5 酸度(以H+计)Acidity,mmol/100g ≤0.02 0.04 0.1 碱度(以OH-计)Alkalinity,mmol/100g ≤0.005 0.01 0.03 甲醇(以CH3OH计)Methanol,% ≤0.02 0.05 0.2 异丙醇[(CH3)2CHOH] ≤0.003 0.01 0.05 羟基化合物(以CO计)Carbonyl compounds ≤0.003 0.003 0.005 还原高锰酸钾物质(以O计)Potassium ≤0.00025 0.00025 0.0006 permanganate reducing substances 易碳化物质Readily carbonizable substances 合格 合格 合格 铁(Fe)Iron,% ≤0.00001 -- -- 锌(Zn)Zinc,% ≤0.00001 -- --
ACS级 项目名称Item ACS Grade 含量Assay(CH3CH2OH) ≥99.5% 水分(H2O)Water ≤0.2% 色度Color(APHA) 10 水溶解试验Solubility in water Passes test 蒸发残渣Residue after evaporation ≤0.001% 丙酮异丙醇试验Acetone,isopropyl alcohol ≤Passes test 可滴定酸Titrable acid ≤0.0005meq/g 可滴定碱Titrable base ≤0.0002meq/g 甲醇Methanol(CH3OH) ≤0.1% 硫酸变黑物substances darkened by sulfuric acid Passes test 还原高锰酸盐物质Substances reducing permanganate Passes test
品级Grade 光谱纯 (for HPLC grade) 纯度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 荧光度(奎宁)254nm ≤1ppb 荧光度(奎宁)365nm ≤1ppb 游离酸(CH3COOH) ≤0.001% 不挥发物 ≤0.001% 水分 ≤0.2%
品级Grade 色谱纯, ≥99.8% (for HPLC, ≥99.8%) 纯度Purity ≥99.8% (GC) 游离酸free acid (as CH3COOH) ≤0.001% 非挥发性物质non-volatile matter ≤0.001% 水分water≤0.2% (Karl Fischer) 荧光度(奎宁)fluorescence (quinine)at 254 nm ≤1 ppb 荧光度(奎宁)fluorescence (quinine) at 365 nm ≤1 ppb λ 1 cm path, H2O reference UV absorption λ: 210 nm A: ≤1.0 λ: 225 nm A: ≤0.26 λ: 254 nm A: ≤0.02 λ: 300 nm A: ≤0.004
品级Grade 分子生物学专用 (for molecular biology, ≥99.8%) 含量assay ≥99.8% DNA酶DNases, none detected 高锰酸钾还原物质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 遇硫酸变黑物质substances darkened by H2SO4, in accordance 游离碱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% 游离酸free acid (as CH3COOH) ≤0.002% 甲醇methanol (CH3OH) ≤0.1% 水分water ≤0.02% 蒸发残渣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
贮存 密封干燥保存。 用途 溶剂,分析镍、钾、镁及脂肪的酸价,萃取剂,脱水剂,清洗剂。 联合国编号 1170 Risk: R11- R20/21/22- R68/20/21/22- Safety : S16- S36/37 - S7-
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