性状  无色透明液体。微有特殊气味。极易挥发，对呼吸道有刺激性，高浓度时有麻醉作用。溶于乙醇、乙醚、丙酮和氯仿，不溶于水。蒸气能与空气形成爆炸性混合物，爆炸极限1.18%-7.43%（体积）。半数致死量（大鼠，经口）49ml/kg。有刺激性。
密度:  0.659 
熔点:  -95 °C 
沸点:  69 °C 
nD20:  1.3748-1.381 
闪点:  -22 °C 
   
备注:  以上描述，仅作参考，并不表示您收到的产品，与此项描述完全相符，产品的出厂标准，请参见质量标准。
质量标准  
   项目                                      分析纯 
                                           (AR)
芳香烃Aromatic hydrocarbon                ≤0.10% 
含量Assay                                 ≥97.0% 
相对密度Specific gravity (20/20°C)       0.6583～0.6613 
易炭化物质Readily Carbonizable Substance  合格 
折光率Refractive index n20/D              1.3741～1.3761 
蒸发残渣Evaporation residue               ≤0.0015% 

项目                                      化学纯 
                                           (CP)
芳香烃Aromatic hydrocarbon                ≤0.15% 
含量Assay                                 ≥95.0% 
相对密度Specific gravity (20/20°C)       0.6578～0.6618
硫酸试验sulfate-sulfuric acid test        合格 
折光率Refractive index n20/D              1.3740～1.3770 
蒸发残渣Evaporation residue               ≤0.003%
   

ACS级
项目名称　                                   ACS Grade
含量Assay                                   ≥ 98.5%
色度Color(APHA)                                10
蒸发残渣Residue after evaporation           ≤ 0.001%
水溶性可滴定酸Water-soluble titrable Acid   ≤ 0.0003meq/g
硫化物Sulfur compounds(s)                   ≤ 0.005%
噻吩Thiophene                               Passes test

项目                                         色谱纯
                                         （适用于HPLC）
纯度Purity                                  ≥98.0% (GC)
相对密度Specific gravity (20/20)           0.6590 - 0.6630 
折光率Refractive index n20/D               1.3740 - 1.3760 
蒸发残渣Evaporation residue                ≤0.001 %
吸光度Absorbance λ H2O reference
  λ: 200 nm                                ≤0.70
  λ: 225 nm                                ≤0.10
  λ: 250 nm                                ≤0.01
非挥发性物质non-volatile matter            ≤0.0005%
游离酸free acid (as CH3COOH)               ≤0.001% 
水分water                                  ≤0.01%  (Karl Fischer)

品级Grade                               光谱纯 
                                     (for spectroscopy)
外观Appearance                        Colorless Liquid
红外光谱 Infrared spectrum            Conforms to Structure
水分Water (by Karl Fischer)           ≤0.02 %
蒸发残渣Residue on Evaporation        ≤0.0005 %
λ H2O reference
UV absorption
  λ: 195 nm A:                        ≤1.00
  λ: 210 nm A:                        ≤0.30
  λ: 220 nm A:                        ≤0.10
  λ: 230 nm A:                        ≤0.05
  λ: 240 nm A:                        ≤0.02
  λ: 250 nm A:                        ≤0.01
  λ: 400 nm A:                        ≤0.01

品级Grade                               农残级 
                                   (solvent for residue analysis)
determination of P/N                  ≤5 ng/L
non-volatile matter                   ≤0.0005% 
water (Karl Fischer)                  ≤0.01% 
suitability for residue analysis      ≤5 ng/L
贮存  密封保存。
用途  溶剂。甲醇中水分测定。紫外光谱分析。农药残留分析。高效液相色谱。气相色谱分析标准。生化研究，蛋白质顺序分析。测定矿物折光率。有机合成。温度计中代替汞。
联合国编号  1208
Risk：  R11- R38- R48/20- R51/53- - R62- R65- R67-
Safety :  S9- S16- - S29- S33- - S36/37- S61- S62-
Hazard :  F - Xn - N -