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| Product Name | Caps buffer powder raw material, CAS 1135-40-6, purity >99% |
| Catalog No. | ATR-B-YJL-0226 |
| Description | CAPS, chemically known as 3-(cyclohexylamino)-1-propanesulfonic acid (CAS 1135-40-6), is an organic weak acid supplied as a white powder with a purity above 99%. Its sodium and potassium salt forms are widely used in biological experiments. With a pKa of 10.4 at 25°C, CAPS functions as an effective acid-base buffer in aqueous solutions. Owing to its weak acidity, it is frequently used to maintain a high intracellular pH in order to protect enzyme activity. A 0.5 M aqueous solution at 20°C exhibits a pH in the range of 3.0-7.0. |
| Intended Use | Biological buffer for maintaining high-pH conditions in biological experiments and protecting enzyme activity. |
| Package Specifications | 25 kg per drum |
| Product Form | White powder |
| Key Features | High pKa value: with a pKa of 10.4 at 25°C, CAPS provides effective buffering across a wide pH range, making it suitable for a variety of experimental scenarios. Good ion selectivity: CAPS exhibits high selectivity toward certain ions, effectively minimizing ionic interference and ensuring the accuracy of experimental results. |
| Purity | >99% |
| Molecular Weight | 221.32 |
| pH Range / Optimal pH | 3.0-7.0 (0.5 M in H2O at 20°C) |
| Molecular Formula | C9H19NO3S |
| Appearance | White powder |
| Alias | CAPS; 3-(Cyclohexylamino)-1-propanesulfonic acid |
| CAS Number | 1135-40-6 |
| pKa | 10.4 (at 25°C) |
| Indicator Transition Range | pH 3-7 |
For research use only, not for clinical use.
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