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首页 > 供应产品 > 美国 乙醇
美国 乙醇
品牌: 乙醇
型号: 64-17-5
规格: 190kg/桶
单价: 4500.00元/吨
最小起订量:
供货总量:
发货期限: 自买家付款之日起 3 天内发货
有效期至: 长期有效
最后更新: 2013-10-22 16:42
 
详细信息
乙醇规格:99.5%    产地:美国     包装:190kg/桶   价格:4500元/吨     
无水乙醇
Ethanol absolute
Cas: 64-17-5      
分子式 C2H6O; CH3CH2OH
分子量 46.07
别名    无水酒精,绝对酒精
Alcohol dehydrated
Ethanol denatured
Ethanol
Methylated spirit mineralised
Alcohol
Ethanol absolute - Duty Free
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、醚等多种有机溶剂混溶。能与水形成共沸混合物(含水4.43%)。
密度:0.789
熔点:-114.1℃
沸点:78.5℃
闪点:13℃
折光率n20/D:1.361
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   
    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 *pounds       ≤0.003       0.003        0.005
还原 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
(Fe)Iron,%                             ≤0.00001      --           --
(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%
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%
***变黑物substances darkened by sulfuric acid             Passes test
还原 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
 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***变黑物质substances darkened by H2SO4, in accordance
游离碱free alkali (as NH3)                  ≤0.0004% 
aldehyde (as CH3CHO)                      ≤0.001% 
甲醛formaldehyde (as HCHO)                  ≤0.001%
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-
Hazard :    F - Xn -
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