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| Sigma-Aldrich® MOPS Physical Properties |
| Synonyms |
3-(N-Morpholino)propanesulfonic acid
4-Morpholinepropanesulfonic acid |
 |
| Molecular Formula |
C7H15NO4S |
Beilstein Registry |
1106776 |
pKa (at 20) |
7.28 |
| Molecular Weight |
209.26 |
MDL Number |
MFCD00006183 |
pKa (at 25) |
7.2 |
| CAS Number |
1132-61-2 |
EG/EC Number |
214-478-5 |
pKa (at 37) |
7.02 |
| Useful pH Range |
6.5 - 7.9 |
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| Sigma-Aldrich MOPS Specifications Comparison |
| |
M1254 |
M3183 |
M5162 |
69948 |
69947 |
| Grade |
≥99.5% (titration) |
BPC, cell culture tested, ≥99.5% (titration) |
BioXtra, >99.5% (titration) |
BioUltra, ≥ 99.5% (T) |
BioUltra, for molecular biology, ≥ 99.5% (T) |
| Purity |
≥99.5% |
≥99.5% |
≥99.5% |
≥99.5% |
≥99.5% |
| Reagent Testing |
| |
M1254 |
M3183 |
M5162 |
69948 |
69947 |
Enhanced Quality
Profile Buffers |
|
|
X |
|
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| 260NM |
|
|
<0.020 |
≤0.020 |
≤0.020 |
| 280NM |
|
|
<0.015 |
≤0.015 |
≤0.015 |
| 290NM |
≤0.05 |
≤0.05 |
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| IR |
|
X |
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| pH |
|
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3 - 4 (20 °C, 1 M in H2O) |
2.5 - 4.0 (25 °C, 1 M in H2O) |
2.5 - 4.0 (25 °C, 1 M in H2O) |
| Karl Fischer |
≤0.1% |
≤0.1% |
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|
| LOD |
|
|
<1% |
≤1% |
≤1% |
| Insoluble Matter |
|
|
filter test |
filter test |
filter test |
| Residue on Ignition |
|
|
<0.1% |
≤0.1% |
≤0.1% |
| Life Science Testing |
| |
M1254 |
M3183 |
M5162 |
69948 |
69947 |
| Endotoxin |
|
≤0.1 eu/mg |
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| SPC |
|
≤100 cfu/g |
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| Cell test |
|
X |
|
|
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| RNAse |
|
X |
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|
X |
| DNAse |
|
X |
|
|
X |
| Nickase |
|
X |
|
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| Protease |
|
X |
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|
X |
| Phosphatase |
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|
|
X |
| Trace Elemental Impurities |
| |
M1254 |
M3183 |
M5162 |
69948 |
69947 |
| Sodium(Na) |
|
|
<0.005% |
≤0.0050% |
≤0.0050% |
| Chloride(Cl) |
|
|
<0.05% |
≤0.0050% |
≤0.0050% |
| Sulfate(SO4) |
|
|
<0.005% |
≤0.0050% |
≤0.0050% |
| Aluminum(Al) |
|
|
<0.0005% |
≤0.0005% |
≤0.0005% |
| Arsenic(As) |
|
|
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≤0.00001% |
≤0.00001% |
| Barium(Ba) |
|
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<0.0005% |
≤0.0005% |
≤0.0005% |
| Bismuth(Bi) |
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|
<0.0005% |
≤0.0005% |
≤0.0005% |
| Calcium(Ca) |
|
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<0.001% |
≤0.0010% |
≤0.0010% |
| Cadmium(Cd) |
|
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<0.0005% |
≤0.0005% |
≤0.0005% |
| Cobalt(Co) |
|
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<0.0005% |
≤0.0005% |
≤0.0005% |
| Chromium(Cr) |
|
|
<0.0005% |
≤0.0005% |
≤0.0005% |
| Copper(Cu) |
|
|
<0.0005% |
≤0.0005% |
≤0.0005% |
| Iron(Fe) |
|
≤0.0005% |
<0.0005% |
≤0.0005% |
≤0.0005% |
| Potassium(K) |
|
|
<0.005% |
≤0.0050% |
≤0.0050% |
| Lithium(Li) |
|
|
<0.0005% |
≤0.0005% |
≤0.0005% |
| Magnesium(Mg) |
|
|
<0.0005% |
≤0.0005% |
≤0.0005% |
| Manganese(Mn) |
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<0.0005% |
≤0.0005% |
≤0.0005% |
| Molybdenum(Mo) |
|
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<0.0005% |
≤0.0005% |
≤0.0005% |
| Nickel(Ni) |
|
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<0.0005% |
≤0.0005% |
≤0.0005% |
| Lead(Pb) |
≤0.0005% |
≤0.0005% |
<0.0005% |
≤0.0005% |
≤0.0005% |
| Strontium(Sr) |
|
|
<0.0005% |
≤0.0005% |
≤0.0005% |
| Zinc(Zn) |
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|
<0.0005% |
≤0.0005% |
≤0.0005% |
| |
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