CAS号：67-56-1
分子式：CH4O;CH3OH
分子量：32.04
MDL：MFCD00004595
EINECS：200-659-6
别名：甲醇(无水);木醇;木粗;木精;无水甲醇;
甲醇;甲醇/光谱纯;工业甲醇
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 &nbs
规格参数
|
好评度