Description
TRIS, min. 99 %, Ph.Eur., USP is a buffer salt with CAS number 77-86-1 and empirical formula C₄H₁₁NO₃. Molar mass is 121,14 g/mol, density 1,32 g/cm³, and boiling point 288 °C. This grade offers minimum 99 % purity in line with Ph.Eur. and USP TRIS is used to prepare buffer systems for biochemical, analytical, and general laboratory workflows within the buffer salts category. The material is available from manufacturer Carl ROTH with EG number 201-064-4, supporting documented formulation of aqueous buffers for research and quality-control methods. suits preparation of stock solutions and medium-scale buffer batches. Physicochemical data including molar mass, density, and boiling point assist method setup and material identification. Specify this TRIS quality when pharmacopoeial-referenced purity and clearly stated composition are required for validated or routine laboratory buffer work. The plastic pack format supports clean handling and storage in standard chemical inventories.
This article is part of Biological buffers (Tris, HEPES, MOPS), in Buffers & pH solutions.
Key features
- Appearance: white crystals or white crystal powder
- Assay (titr.): 99.0-100.5 %
- pH value (5 %, hydrous sol.): 10.0-11.5
- Appearance of solution: clear and colourless
- Melting point: 168-172 °C
- Loss on drying (105 °C): ≤0.5 %
- Related substances: ≤1.0 %
- Sulphated ash: ≤0.1 %
- Chloride (Cl): ≤0.01 %
- Iron (Fe): ≤0.001 %
- CAS number: 77-86-1
- Pack sizes: 500 g, 1 kg, 5 kg, 2.5 kg
- EG nr.: 201-064-4
- Purity: min. 99 %, Ph.Eur., USP
- Empirical formula: C₄H₁₁NO₃
- Molar mass: 121,14 g/mol
- Technical Information Sheet:
- Safety Data Sheet:
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Questions about TRIS, min. 99 %, Ph.Eur., USP, 500 g, plastic
What is this article?
TRIS, min. 99 %, Ph.Eur., USP, 500 g, plastic is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in Biological buffers (Tris, HEPES, MOPS), inside Buffers & pH solutions, in Lab chemicals.
Tris, HEPES, MOPS and their relatives hold pH in a range that cells and proteins tolerate, with a pKa near the working pH. The useful range is roughly one unit either side of the pKa. A phosphate buffer and Tris are not interchangeable in a method that names one of them, because the ion itself has effects.
A buffer resists a change in pH when a little acid or base is added. It does that because a weak acid and its conjugate base are both present. A pH buffer used to calibrate a meter has a stated value at a stated temperature. A biological buffer such as Tris or HEPES is chosen because it holds the pH of a living system and does not poison it. Conductivity standards are the sister articles for a conductivity meter. The ions are on PubChem. Electrode calibration practice sits with EURAMET and BELAC.
Which category should I open next?
The category is Buffers & pH solutions. The sub-category is Biological buffers (Tris, HEPES, MOPS). The catalogue is Lab chemicals.
Shelves beside this one are pH buffers & conductivity standards and Buffers (other).
What should I check before I order?
The technical information on this page is the manufacturer's sheet. Read that, not a rewritten specification.
When this page shows a safety data sheet, use that manufacturer file. Hazard text does not belong in the sales description. For a pack size, a grade or a certificate that is not on the page, send a quote request or contact the team.
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