無(wú)水乙醇
Ethanol absolute
Cas號(hào) 【64-17-5】 MDL: --MFCD00003568
Beilstein 1718733 EINECS: --200-578-6
分子式 C2H6O； CH3CH2OH
分子量 46.07
別名 無(wú)水酒精,絕對(duì)酒精
Alcohol dehydrated
Ethanol denatured
Ethanol
Methylated spirit mineralised
Alcohol
Ethanol absolute - Duty Free
分子結(jié)構(gòu)式
性狀 無(wú)色澄清液體，有愉快的氣味和灼燒味，易流動(dòng)，極易從空氣中吸收水分，能與水和氯仿、醚等多種有機(jī)溶劑混溶。能與水形成共沸混合物（含水4.43%）。蒸氣與空氣能形成爆炸性混合物，爆炸極限3.5%-18.0%(體積)。
密度：0.789
熔點(diǎn)：-114.1℃
沸點(diǎn)：78.5℃
閃點(diǎn)：13℃
折光率n20/D：1.361
備注: 以上描述，僅作參考，并不表示您收到的產(chǎn)品，與此項(xiàng)描述完全相符，產(chǎn)品的出廠(chǎng)標(biāo)準(zhǔn)，請(qǐng)參見(jiàn)質(zhì)量標(biāo)準(zhǔn)。
質(zhì)量標(biāo)準(zhǔn)
執(zhí)行標(biāo)準(zhǔn)： GB/678-2002
項(xiàng)目Item 優(yōu)級(jí)純 分析純 化學(xué)純
(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
與水混合試驗(yàn)Miscibility with water 合格 合格 合格
蒸發(fā)殘?jiān)?/strong>Evaporation residue,% ≤0.0005 0.001 0.001
水份(H2O)Water,% ≤0.2 0.3 0.5
酸度(以H+計(jì))Acidity,mmol/100g ≤0.02 0.04 0.1
堿度(以OH-計(jì))Alkalinity,mmol/100g ≤0.005 0.01 0.03
甲醇(以CH3OH計(jì))Methanol,% ≤0.02 0.05 0.2
異丙醇[(CH3)2CHOH] ≤0.003 0.01 0.05
羥基化合物(以CO計(jì))Carbonyl compounds ≤0.003 0.003 0.005
還原高錳酸鉀物質(zhì)(以O計(jì))Potassium ≤0.00025 0.00025 0.0006
permanganate reducing substances
易碳化物質(zhì)Readily carbonizable
substances 合格 合格 合格
鐵(Fe)Iron,% ≤0.00001 -- --
鋅(Zn)Zinc,% ≤0.00001 -- --
ACS級(jí)
項(xiàng)目名稱(chēng)Item ACS Grade
含量Assay(CH3CH2OH) ≥99.5%
水分(H2O)Water ≤0.2%
色度Color(APHA) 10
水溶解試驗(yàn)Solubility in water Passes test
蒸發(fā)殘?jiān)?/strong>Residue after evaporation ≤0.001%
丙酮異丙醇試驗(yàn)Acetone,isopropyl alcohol ≤Passes test
可滴定酸Titrable acid ≤0.0005meq/g
可滴定堿Titrable base ≤0.0002meq/g
甲醇Methanol(CH3OH) ≤0.1%
硫酸變黑物substances darkened by sulfuric acid Passes test
還原高錳酸鹽物質(zhì)Substances reducing permanganate Passes test
品級(jí)Grade 光譜純
(for HPLC grade)
純度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
熒光度(奎寧)254nm ≤1ppb
熒光度(奎寧)365nm ≤1ppb
游離酸(CH3COOH) ≤0.001%
不揮發(fā)物 ≤0.001%
水分 ≤0.2%
品級(jí)Grade 色譜純, ≥99.8%
(for HPLC, ≥99.8%)
純度Purity ≥99.8% (GC)
游離酸free acid (as CH3COOH) ≤0.001%
非揮發(fā)性物質(zhì)non-volatile matter ≤0.001%
水分water≤0.2% (Karl Fischer)
熒光度(奎寧)fluorescence (quinine)at 254 nm ≤1 ppb
熒光度(奎寧)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
品級(jí)Grade 分子生物學(xué)專(zhuān)用
(for molecular biology, ≥99.8%)
含量assay ≥99.8%
DNA酶DNases, none detected
高錳酸鉀還原物質(zhì)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
遇硫酸變黑物質(zhì)substances darkened by H2SO4, in accordance
游離堿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%
游離酸free acid (as CH3COOH) ≤0.002%
甲醇methanol (CH3OH) ≤0.1%
水分water ≤0.02%
蒸發(fā)殘?jiān)?/strong>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
貯存 密封干燥保存。
用途 溶劑，分析鎳、鉀、鎂及脂肪的酸價(jià)，萃取劑，脫水劑，清洗劑。
聯(lián)合國(guó)編號(hào) 1170
Risk： R11- R20/21/22- R68/20/21/22-
Safety : S16- S36/37 - S7-
Hazard : F - Xn -
