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648313

TRIS Hydrochloride

Name: TRIS Hydrochloride
Brand: MM

ULTROL^® Grade, ≥99% (titration), useful in pH range 7.0-9.0

Synonym(s):

Trizma^® hydrochloride, tris(Hydroxymethyl)aminomethane, HCl, TRIS HCl, TRIS hydrochloride, Tris(hydroxymethyl)aminomethane hydrochloride, Tromethane hydrochloride

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About This Item

Linear Formula:

NH₂C(CH₂OH)₃ · HCl

CAS Number:

1185-53-1

Molecular Weight:

157.60

NACRES:

NA.25

UNSPSC Code:

12161705

Beilstein/REAXYS Number:

3675235

MDL number:

MFCD00012590

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Properties

description

Merck USA index - 14, 9772

Quality Level

100

assay

≥99% (titration)

form

solid

manufacturer/tradename

Calbiochem^®

storage condition

OK to freeze

color

white

useful pH range

7.0-9.0

pKa (25 °C)

8.1

solubility

water: 500 mg/mL

cation traces

heavy metals: ≤5 ppm

shipped in

ambient

storage temp.

15-25°C

SMILES string

Cl.NC(CO)(CO)CO

InChI

1S/C4H11NO3.ClH/c5-4(1-6,2-7)3-8;/h6-8H,1-3,5H2;1H

InChI key

QKNYBSVHEMOAJP-UHFFFAOYSA-N

Description

General description

Absorbance (1.0 M, H₂O, 260 nm):≤0.1.

Useful in the pH range of 7.0-9.0. Has a pK_a of 8.1 at 25°C.

Widely used as a biological buffer (absorbance: <0.1 at 260 nm, 1.0 M, H₂O). A 1.0 M solution in H₂O has a pH range of 3.5-5.0 and a pK_a of 8.3 at 20°C.

Application

Effect of Organic Solvents on the Activity, Stability and Secondary Structure of asclepain cI, Using FTIR and Molecular Dynamics Simulations.: This study uses Tris hydrochloride as a buffer to assess the stability and structural changes in the asclepain cI enzyme, providing insights into enzyme applications in industrial and medical biotechnology (Origone et al., 2024).

Microencapsulation of Omeprazole by Lactobacillus acidophilus ATCC 4356 Surface Layer Protein and Evaluation of its Stability in Acidic Condition.: Research demonstrates the use of Tris hydrochloride buffer in stabilizing microencapsulated omeprazole, aimed at enhancing drug delivery in acidic environments (Mobarak Qamsari et al., 2020).

Other Notes

The pH values of all buffers are temperature and concentration dependent. For Tris buffers, pH increases about 0.03 unit per °C decrease in temperature, and decreases 0.03-0.05 unit per ten-fold dilution. For precise applications, use a carefully calibrated pH meter with a glass/calomel combination electrode.

Legal Information

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

Trizma is a registered trademark of Merck KGaA, Darmstadt, Germany

ULTROL is a registered trademark of Merck KGaA, Darmstadt, Germany

Disclaimer

Toxicity: Standard Handling (A)

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Storage Class

11 - Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c