乙酸 规格:99.0% 产地:德国/比利时 包装:200kg/桶 价格:2700元/吨
冰乙酸
Acetate
Cas号: 64-19-7
分子式 C2H4O2;CH3COOH
分子量 60.05
别名冰醋酸,乙酸
Acetic acid
Acetic acid glacial
Glacial acetic acid
性状无色透明液体。有刺激性气味。有腐蚀性,对皮肤有刺激痛,发水泡。其蒸气有毒,并易着火。纯的无水乙酸(冰醋酸)是无色的吸湿性液体,凝固点为16.7℃(62℉) ,凝固后为无色晶体。能与水、乙醇、醚、四氯化碳和油混和,难溶于二硫化碳。凝固时体积微缩。
密度:1.048
熔点: 16-16.5℃
沸点: 117-118℃
折光率n20/D: 1.37-1.373
闪点:40℃
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
GB/T 676-90
项目Item 优级纯 分析纯 化学纯
(GR) (AR) (CP)
含量(CH3COOH)Assay,% ≥99.8 99.5 99.0
结晶点Freezing point,℃ ≥16.0 15.1 14.8
蒸发残渣Evaporation residue,% ≤0.001 0.002 0.005
与水混合试验Miscibility with water 合格 合格 合格
氯化物(Cl)Chloride,% ≤0.0001 0.0001 0.0004
硫酸盐(SO4)Sulfate,% ≤0.0001 0.002 0.0005
铁(Fe)Iron,% ≤0.00002 0.0001 0.0002
铜(Cu)Copper,% ≤0.00001 0.00005 0.0001
锌(Zn)Zinc,% ≤0.00001 -- --
铅(Pb)Lead,% ≤0.00001 0.00005 0.0001
乙酸酐[CH3CO)2O]Acetic anhydride ≤0.01 0.02 0.02
还原重铬酸盐物质(以O计)Dichromate-reducing
substances,% ≤0.004 0.008 0.01
ACS级
项目名称Item ACS Grade
含量Assay(as CH3COOH) ≥99.7%
色度Color(APHA) ≤10
稀释试验Dilution test Passes test
蒸发残渣Residue after evaporation ≤0.001%
乙酸酐[(CH3CO)2O]Acetic anhydride ≤0.01%
氯化物(Cl)Chloride(Cl) ≤0.0001%
硫酸盐(SO4)Sulfate ≤0.0001%
重金属(以Pb计)Heavy metals(as Pb) ≤0.00005%
铁(Fe)Iron(Fe) ≤0.00002%
还原重铬酸盐Substances reducing dichromate Passes test
还原高锰酸盐Substances reducing permanganate Passes test
可滴定碱Titrable base ≤0.0004meq/g
品级Grade 电子级
(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
品级Grade 药用级
(Ph. Eur., BP, USP, FCC, 99.8-100.5%)
外观Appearance Clear colorless liquid
纯度Purity(titration) 99.8-100.5 %
凝固点Congealing temperature ≤15.6 ° c
非挥发残留Nonvolatile residue ≤ 0.005%
还原性物质Reducing substances pass test
氯化物Chloride pass test
硫酸盐Sulfate pass test
铁Iron ≤5 ppm
重金属Heavy metals ≤5 ppm
易氧化物质Readily oxidizable substances pass test
项目名称Item for LC-MS
含量Assay(as CH3COOH) ≥99.7%
色度Color(APHA) ≤10
蒸发残渣Evaporation residue ≤0.0005%
乙醛Acetaldehyde ≤0.0002%
乙酸酐Acetic anhydride (GC) ≤0.01%
氯离子Chloride (Cl-) ≤0.5 mg/kg
磷酸根Phosphate (PO43-) ≤0.5 mg/kg
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
项目名称Item for HPLC, ≥99.9%
外观Appearance Colorless Liquid
红外光谱Infrared spectrum Conforms to Structure
纯度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.
项目名称Item 用于荧光分析,99.7%
外观Appearance Colorless Liquid
红外光谱Infrared spectrum Conforms to Structure
纯度Purity(GC) ≥99.70 %
乙酸酐Acetic Anhydride < 0.01 %
蒸发残渣Residue on Evaporation < 0.001 %
色度Color Test < 10 APHA
氯离子Chloride (CL) < 1 ppm
硫酸盐Sulfate < 1 ppm
铁Iron (Fe) < 0.2 ppm
重金属Heavy metals (as Pb) < 0.5 ppm
重铬酸还原物质Substances reducing Dichromate Pass
MnO4
贮存密封,在16℃以上的暖处保存,以防凝固而致使容器破裂
用途常用有机酸。分析、溶剂、有机合成,制备缓冲液等。
联合国编号 2789
Risk: R10- R35-
Safety : S23- S26- S45-
Hazard : C -