乙酸規(guī)格:99.0% 產(chǎn)地:德國(guó)/比利時(shí) 包裝:200kg/桶 價(jià)格:2700元/噸
冰乙酸
Acetate
Cas號(hào): 64-19-7
分子式 C2H4O2；CH3COOH
分子量 60.05
別名冰醋酸，乙酸
Acetic acid
Acetic acid glacial
Glacial acetic acid
性狀 無(wú)色透明液體。有刺激性氣味。有腐蝕性，對(duì)皮膚有刺激痛，發(fā)水泡。其蒸氣有毒，并易著火。純的無(wú)水乙酸（冰醋酸）是無(wú)色的吸濕性液體，凝固點(diǎn)為16.7℃（62℉） ，凝固后為無(wú)色晶體。能與水、乙醇、醚、四氯化碳和油混和，難溶于二硫化碳。凝固時(shí)體積微縮。
密度：1.048
熔點(diǎn): 16-16.5℃
沸點(diǎn): 117-118℃
折光率n20/D: 1.37-1.373
閃點(diǎn)：40℃
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)品的出廠標(biāo)準(zhǔn)，請(qǐng)參見質(zhì)量標(biāo)準(zhǔn)。
質(zhì)量標(biāo)準(zhǔn)
GB/T 676-90
項(xiàng)目Item 優(yōu)級(jí)純 分析純 化學(xué)純
(GR) (AR) (CP)
含量(CH3COOH)Assay,% ≥99.8 99.5 99.0
結(jié)晶點(diǎn)Freezing point,℃ ≥16.0 15.1 14.8
蒸發(fā)殘?jiān)?span>Evaporation residue,% ≤0.001 0.002 0.005
與水混合試驗(yàn)Miscibility with water 合格 合格 合格
氯化物(Cl)Chloride,% ≤0.0001 0.0001 0.0004
禁發(fā) 硫酸鹽(SO4)Sulfate,% ≤0.0001 0.002 0.0005
鐵（Fe)Iron,% ≤0.00002 0.0001 0.0002
銅(Cu)Copper,% ≤0.00001 0.00005 0.0001
鋅(Zn)Zinc,% ≤0.00001 -- --
鉛(Pb)Lead,% ≤0.00001 0.00005 0.0001
乙酸酐［CH3CO)2O］Acetic anhydride ≤0.01 0.02 0.02
還原重鉻酸鹽物質(zhì)(以O(shè)計(jì))Dichromate-reducing
substances,% ≤0.004 0.008 0.01
ACS級(jí)
項(xiàng)目名稱Item ACS Grade
含量Assay(as CH3COOH) ≥99.7%
色度Color(APHA) ≤10
稀釋試驗(yàn)Dilution test Passes test
蒸發(fā)殘?jiān)?span>Residue after evaporation ≤0.001%
乙酸酐[(CH3CO)2O]Acetic anhydride ≤0.01%
氯化物(Cl)Chloride(Cl) ≤0.0001%
禁發(fā) 硫酸鹽(SO4)Sulfate ≤0.0001%
重金屬(以Pb計(jì))Heavy metals(as Pb) ≤0.00005%
鐵(Fe)Iron(Fe) ≤0.00002%
還原重鉻酸鹽Substances reducing dichromate Passes test
還原高錳酸鹽Substances reducing permanganate Passes test
可滴定堿Titrable base ≤0.0004meq/g
品級(jí)Grade 電子級(jí)
(semiconductor grade)
Maximum
Assay(CH3COOH) 99.7%
Color 10 APHA
Cloride(Cl) 500ppb
Sulfate(SO4) 500ppb
Phosphate 500ppb
Residue After Evaporation 500ppb
Acetic Anhydride 0.1%
Maximum limit of impurities
Al 3ppb
As 1ppb
Sb 1ppb
Ba 1ppb
Be 1ppb
Bi 1ppb
B 3ppb
Cd 1ppb
Ca 3ppb
Cr 1ppb
Co 1ppb
Cu 1ppb
Ga 1ppb
Ge 1ppb
Au 1ppb
In 1ppb
Fe 1ppb
Pb 1ppb
Li 1ppb
Mg 1ppb
Mn 1ppb
Mo 1ppb
Ni 1ppb
Nb 1ppb
K 3ppb
Pt 1ppb
Ag 1ppb
Na 3ppb
Sr 1ppb
Sn 1ppb
Ta 1ppb
Ti 1ppb
Zn 1ppb
Zr 1ppb
Particulate Count
≥0.3micron 200pcs/ml
≥0.5micron 100pcs/ml
品級(jí)Grade 藥用級(jí)
(Ph. Eur., BP, USP, FCC, 99.8-100.5%)
外觀Appearance Clear colorless liquid
純度Purity(titration) 99.8-100.5 %
凝固點(diǎn)Congealing temperature ≤15.6 ° c
非揮發(fā)殘留Nonvolatile residue ≤ 0.005%
還原性物質(zhì)Reducing substances pass test
氯化物Chloride pass test
禁發(fā) 硫酸鹽Sulfate pass test
鐵Iron ≤5 ppm
重金屬Heavy metals ≤5 ppm
易氧化物質(zhì)Readily oxidizable substances pass test
項(xiàng)目名稱Item for LC-MS
含量Assay(as CH3COOH) ≥99.7%
色度Color(APHA) ≤10
蒸發(fā)殘?jiān)?span>Evaporation residue ≤0.0005%
乙醛Acetaldehyde ≤0.0002%
乙酸酐Acetic anhydride (GC) ≤0.01%
氯離子Chloride (Cl-) ≤0.5 mg/kg
磷酸根Phosphate (PO43-) ≤0.5 mg/kg
禁發(fā) 硫酸根Sulfate (SO42-) ≤0.5 mg/kg
Ag ≤0.01 mg/kg
Al ≤0.05 mg/kg
As ≤0.01 mg/kg
Ba ≤0.01 mg/kg
Be ≤0.01 mg/kg
Bi ≤0.1 mg/kg
Ca ≤0.2 mg/kg
Cd ≤0.02 mg/kg
Co ≤0.01 mg/kg
Cr ≤0.05 mg/kg
Cu ≤0.01 mg/kg
Fe ≤0.2 mg/kg
Ge ≤0.05 mg/kg
K ≤0.1 mg/kg
Li ≤0.01 mg/kg
Mg ≤0.1 mg/kg
Mn ≤0.01 mg/kg
Mo ≤0.02 mg/kg
Na ≤0.5 mg/kg
Ni ≤0.05 mg/kg
Pb ≤0.02 mg/kg
Sr ≤0.01 mg/kg
Ti ≤0.01 mg/kg
Tl ≤0.05 mg/kg
V ≤0.01 mg/kg
Zn ≤0.05 mg/kg
Zr ≤0.1 mg/kg
項(xiàng)目名稱Item for HPLC, ≥99.9%
外觀Appearance Colorless Liquid
紅外光譜Infrared spectrum Conforms to Structure
純度Purity(GC) ≥99.9 %
紫外吸光度UV absorption UV absorption
Absorbance:260 nm ≤ 0.1 A.U.
Absorbance:270 nm ≤ 0.02 A.U.
Absorbance:280 nm ≤ 0.02 A.U.
項(xiàng)目名稱Item 用于熒光分析,99.7%
外觀Appearance Colorless Liquid
紅外光譜Infrared spectrum Conforms to Structure
純度Purity(GC) ≥99.70 %
乙酸酐Acetic Anhydride < 0.01 %
蒸發(fā)殘?jiān)?span>Residue on Evaporation < 0.001 %
色度Color Test < 10 APHA
氯離子Chloride (CL) < 1 ppm
禁發(fā) 硫酸鹽Sulfate < 1 ppm
鐵Iron (Fe) < 0.2 ppm
重金屬Heavy metals (as Pb) < 0.5 ppm
重鉻酸還原物質(zhì)Substances reducing Dichromate Pass
MnO4
貯存密封，在16℃以上的暖處保存，以防凝固而致使容器破裂
用途常用有機(jī)酸。分析、溶劑、有機(jī)合成，制備緩沖液等。
聯(lián)合國(guó)編號(hào) 2789
Risk： R10- R35-
Safety : S23- S26- S45-
Hazard : C -