吗啉乙磺酸
产品别名: 4-吗啉乙磺酸,2-(N-吗啉基)乙磺酸
2-(N-Morpholino)ethanesulfonic acid
4-Morpholineethanesulfonic acid
MES
CAS: 4432-31-9
MDL: MFCD00006181
EINECS: 224-632-3
Beilstein: 141319
分子式: C6H13NO4S
分子量: 195.2
性状 白色结晶粉末。
pH range 5.5 - 6.7
pKa 6.1
熔点: 316 °C
吗啉乙磺酸备注: 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。
≥99.0% (T):
纯度Purity(Titration by NAOH) ≥99.0% (T)
水分Water (by Karl Fischer) ≤9%
useful pH range 5.5 - 6.7
solubility H2O: soluble0.5 M at 20 °C, clear
anion traces chloride (Cl-): ≤50 ppm
sulfate (SO42-): ≤50 ppm
cation traces Ca: ≤50 ppm
Cd: ≤5 ppm
Co: ≤5 ppm
Cr: ≤5 ppm
Cu: ≤5 ppm
Fe: ≤5 ppm
K: ≤50 ppm
Mg: ≤5 ppm
Mn: ≤5 ppm
Na: ≤50 ppm
Ni: ≤5 ppm
Pb: ≤5 ppm
Zn: ≤5 ppm
≥99.5% (T):
外观Appearance White Crystalline Powder
纯度Purity(Titration by NAOH) ≥99.5 %
Anhydrous
水分Water (by Karl Fischer) ≤5%
灼烧残渣ign. residue (900 °C) ≤0.05% (as SO4)
pH 2.5-4.0 (25 °C, 0.5 M in H2O)
useful pH range 5.5 - 6.7
pKa (25 °C) 6.1
水溶性solubility H2O: soluble0.5 M at 20 °C, clear, colorless
氯chloride (Cl-): ≤50 ppm
硫酸根sulfate (SO42-): ≤50 ppm
cation traces
Al: ≤5 ppm
As: ≤0.1 ppm
Ba: ≤5 ppm
Bi: ≤5 ppm
Ca: ≤20 ppm
Cd: ≤5 ppm
Co: ≤5 ppm
Cr: ≤5 ppm
Cu: ≤5 ppm
Fe: ≤5 ppm
K: ≤50 ppm
Li: ≤5 ppm
Mg: ≤5 ppm
Mn: ≤5 ppm
Mo: ≤5 ppm
Na: ≤50 ppm
Ni: ≤5 ppm
Pb: ≤5 ppm
Sr: ≤5 ppm
Zn: ≤5 ppm
λ 0.5 M in H2O
UV absorption λ: 260 nm A: ≤0.025
λ: 280 nm A: ≤0.020
品级Grade 分子生物学级,≥99.5% (T)
(for molecular biology,≥99.5% (T))
外观Appearance White Crystalline Powder
纯度Purity(Titration by NAOH) ≥99.5 %
Anhydrous
DNA酶DNases, none detected
RND酶RNases, none detected
不溶物insoluble matter, passes filter test
磷酸酶phosphatases, none detected
蛋白酶proteases, none detected
灼烧残渣ign. residue (900 °C) ≤0.05% (as SO4)
pH 2.5-4.0 (25 °C, 0.5 M in H2O)
useful pH range 5.5 - 6.7
pKa (25 °C) 6.1
水溶性solubility H2O: soluble0.5 M at 20 °C, clear, colorless
氯chloride (Cl-): ≤50 ppm
硫酸根sulfate (SO42-): ≤50 ppm
cation traces
Al: ≤5 ppm
As: ≤0.1 ppm
Ba: ≤5 ppm
Bi: ≤5 ppm
Ca: ≤20 ppm
Cd: ≤5 ppm
Co: ≤5 ppm
Cr: ≤5 ppm
Cu: ≤5 ppm
Fe: ≤5 ppm
K: ≤50 ppm
Li: ≤5 ppm
Mg: ≤5 ppm
Mn: ≤5 ppm
Mo: ≤5 ppm
Na: ≤50 ppm
Ni: ≤5 ppm
Pb: ≤5 ppm
Sr: ≤5 ppm
Zn: ≤5 ppm
λ 0.5 M in H2O
UV absorption λ: 260 nm A: ≤0.025
λ: 280 nm A: ≤0.020
品级Grade 植物细胞培养级
(for plant cell culture, ≥99.5%)
外观Appearance White Crystalline Powder
纯度Purity(Titration by NAOH) ≥99.5 %
DNA酶DNases, none detected
RND酶RNases, none detected
不溶物insoluble matter, passes filter test
磷酸酶phosphatases, none detected
蛋白酶proteases, none detected
Anhydrous
水分Water (by Karl Fischer) ≤5 %
灼烧残渣ign. residue (900 °C) ≤0.05% (as SO4)
pH 2.5-4.0 (25 °C, 0.5 M in H2O)
useful pH range 5.5 - 6.7
pKa (25 °C) 6.1
水溶性solubility H2O: soluble0.5 M at 20 °C, clear, colorless
内毒素Endotoxin Level ≤0.1 EU/mg
总好氧微生物计数Total Aerobic Microbial Count
≤100 CFU/g
植物细胞培养试验Plant Cell Culture Test Pass
≥99% (T),水分≤1.0%:
(≥99% (T),water≤1.0% )
外观appearance white powder
水溶性solubility clear colorless solution at 20 g plus 80 ml of water
红外光谱鉴别Infrared spectrometry Conforms to Structure
纯度purity by TITRATION WITH NAOH ≥99.0%(anhydrous basis)
水分water by karl fischer ≤1.0%
紫外吸收uv absorbance ≤ 0.05 at 290nm (20%w/w)
重金属heavy metals ≤5 ppm (as lead)
贮存 室温
用途 生物缓冲剂,用在生化诊断试剂盒、DNA/RNA提取试剂盒及PCR诊断试剂盒里。