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| Product Name | Tris Base pH 7.0-9.2 Biological Buffer Raw Material ≥99% Purity 20 kg and 25 kg Drums |
| Catalog No. | ATR-B-YJL-0282 |
| Description | Tris, or tris(hydroxymethyl)aminomethane, is a weak-base biological buffer supplied as white crystalline powder. It is soluble in water and ethanol and is reported to have a pKa of 8.1 below 25°C, with an effective buffering interval of pH 7.0-9.2. The material is commonly adjusted with hydrochloric acid and is described in connection with TE and TAE buffer preparation. |
| Intended Use | For pH adjustment and preparation of biological buffer systems, including TE and TAE formulations. |
| Storage Conditions | Not stated for this product entry. |
| Package Specifications | 20 kg per drum; 25 kg per drum |
| Product Form | Crystalline powder |
| Key Features | Weak-base buffer with a stated effective pH range of 7.0-9.2. |
| Purity | ≥99% |
| pH Range / Optimal pH | Effective buffering range pH 7.0-9.2; aqueous Tris solution is described as approximately pH 10.5 before adjustment. |
| Recommended Buffer System | Hydrochloric acid is typically used to adjust Tris to the required pH. Tris-HCl with EDTA forms TE buffer; replacing the pH-adjusting acid with acetic acid gives TAE buffer. |
| Application Notes / Precautions | Tris pKa is temperature-dependent. The material is described as corrosive to copper and aluminum. |
| Appearance | White crystalline powder |
| Solubility | Soluble in water and ethanol; slowly soluble in ethyl acetate; insoluble in ether and carbon tetrachloride. |
| Chemical Name | Tris(hydroxymethyl)aminomethane |
| CAS Number | 77-86-1 |
| Other Name | Tris |
| pKa | 8.1 below 25°C |
| Safety | Corrosive to copper and aluminum. |
For research use only, not for clinical use.
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