商品名：醋酸铵
别 名：乙酸铵 ,乙酸铔 ,醋酸铵；Acetic acid ammonium salt
英文名：Ammonium acetate
产 地：湖南
Cas号：631-61-8
MDL：MFCD00013066
Beilstein：
EINECS：211-162-9
分子结构：
分子式：C2H7NO2； CH3COONH4
分子量：77.0800
备注：
性状：无色结晶。稍有乙酸气味。极易潮解。易溶于水和乙醇,微溶于丙酮。水溶液呈弱酸性,0.5mol/L水溶液的pH为7.0。相对密度(d204)1.17。熔点114℃。致死量(小鼠,静脉)1.8mG(NH+4)/20G。有刺激性。
质量标准：GB/T 1292-86
项目Item 优级纯 分析纯 化学纯
(GR) (AR) (CP)
含量(CH3COONH4)Assay,% ≥99.0 98.0 97.0
水溶液反应Solution reaction 合格 合格 合格
澄清度试验Clarity 合格 合格 合格
水不溶物Insoluble matter in water,% ≤0.002 0.005 0.01
灼烧残渣（以硫酸盐计）Ignition residue,% ≤0.005 0.005 0.01
水分(H2O)Water,% ≤2.0 -- --
氯化物(Cl)Chloride,% ≤0.0005 0.0005 0.001
硫酸盐(SO4)Sulfate,% ≤0.001 0.002 0.005
硝酸盐(NO3)Nitrate,% ≤0.001 0.001 --
磷酸盐(PO4)Phosphate,% ≤0.0003 0.0005 --
镁(Mg)Magnesium,% ≤0.0002 0.0004 0.001
钙(Ca)Calcium,% ≤0.0005 0.001 0.002
铁(Fe)Iron,% ≤0.0002 0.0005 0.001
重金属(以Pb计)Heavy metals,% ≤0.0002 0.0005 0.001
还原高锰酸钾物质Potassium
permanganate-reducing substances ≤0.005 0.01 0.01
项目名称Item ACS Grade
含量(CH3COONH4)Assay ≥97.0%
pH(5%溶液，25.0℃)pH 6.7-7.3
水不溶物Insoluble matter ≤0.005%
蒸发残渣Residue after evaporation ≤0.01%
氯化物(Cl)Chloride(Cl) ≤5ppm
硝酸盐(NO3)Nitrate ≤0.001%
硫酸盐(SO4)Sulfate ≤0.001%
重金属(以Pb计)Heavy metals(as Pb) ≤5ppm
铁(Fe)Iron(Fe) ≤5ppm
品级Grade 色谱纯
(grade for HPLC)
含量assay ≥99.0% (NT)
pH 6.5-7.5 (20 °C, 10% in H2O)
λ 10 % in H2O
UV absorption
λ: 250 nm ≤ 0.05
λ: 260 nm ≤ 0.04
λ: 270 nm ≤ 0.03
λ: 280 nm ≤0.02
λ: 500 nm ≤0.02
RP gradient test pass
品级Grade 分子生物学级, ~98%
(for molecular biology, ~98% )
外观Appearance 白色至类白色粉末
氯Chloride ≤ 5 ppm
铁Iron (Fe) ≤5 ppm
重金属Heavy Metals(As Lead) ≤5 ppm
DNAse, None Detected
核酸外切酶Exonuclease Detection None Detected
RNAse Detection None Detected
蛋白酶Protease by FITC-Casein None Detected
纯度Purity ≥98.0% (滴定)
99.99% metals basis:
外观Appearance White Moist Crystals
红外光谱Infrared spectrometry Conforms to Structure
纯度Purity ≥99.99% Based on Trace Metals Impurities
总痕量金属杂质total metallic impurities ≤100ppm by ICP Atomic emission
滴定纯度Purity (Titration by NAOH) ≥98.0 %
灼烧残渣Residue on ignition (Ash) 0.01 %
不溶物Insoluble matter (C=10%; H2O) ≤0.005 %
C=10%, H2O
氯Chloride (CL) ≤5 ppm
铁Iron (Fe) ≤5 ppm
重金属Heavy Metal (as Pb) ≤5 ppm
硝酸根Nitrate (NO3) ≤0.001 %
pH (@ 25 °C, C=5%; H2O) 6.7- 7.3
硫酸根Sulfate ≤0.001 %
99.996% metals basis:
外观Appearance White Crystals
红外光谱Infrared spectrometry Conforms to Structure
滴定纯度Purity (Titration by NAOH) ≥98.0 %
纯度Purity ≥99.996% Based on Trace Metals Impurities
总痕量金属杂质total metallic impurities ≤40ppm by ICP Atomic emission
品级Grade 用于质谱，LC-MS淋洗液添加剂
(for mass spectroscopy ，eluent additive for LC-MS，≥99.0%)
外观Appearance White Crystals
红外光谱Infrared spectrometry Conforms to Structure
纯度Purity ≥99.0% (calc. on dry substance, T)
不溶物insoluble matter, passes filter test
水分water ≤1%
灼烧残渣ign. residue ≤0.01% (as SO4)
pH 6.2-7.5 (25 °C, 1 M in H2O)
水溶性solubility H2O: soluble1 M at 20 °C, clear, colorless
氯chloride (Cl-): ≤5 ppm
硝酸根nitrate (NO3-): ≤10 ppm
硫酸根sulfate (SO42-): ≤10 ppm
cation traces Al: ≤1 ppm
As: ≤0.1 ppm
Ba: ≤1 ppm
Bi: ≤1 ppm
Ca: ≤5 ppm
Cd: ≤1 ppm
Co: ≤1 ppm
Cr: ≤1 ppm
Cu: ≤1 ppm
Fe: ≤1 ppm
K: ≤5 ppm
Li: ≤1 ppm
Mg: ≤1 ppm
Mn: ≤1 ppm
Mo: ≤1 ppm
Na: ≤5 ppm
Ni: ≤1 ppm
Pb: ≤1 ppm
Sr: ≤1 ppm
Zn: ≤1 ppm
λ 1 M in H2O
UV absorption λ: 260 nm Amax: ≤0.015
λ: 280 nm Amax: ≤0.010
suitability in accordance for LC-MS
存储：密封干燥保存。
用途：用以配制缓冲液,测定铝和铁。从其他硫酸盐分离硫酸铅。
联合编号：
RISK：
Safety：
Hazard：