Check the solubility of 128 common inorganic compounds (salts and acids) in water at different temperatures from 0 degrees Celsius to 100 C. Compound formulas are also given in this table of solubility in relation to temperature.

Periodic Table of the Elements

Download the Periodic Table of the Elements with names, atomic mass and number in printable .pdf and image format. Use the periodic table chart by element names in alphabetical order for quick research, reference and lab use.

Thermal Transitions of Homopolymers: Glass Transition & Melting Point

Literature values for the glass transition temperature, (Tg), and melting temperature, (Tm), are given for the more common homopolymers.

Melamine Analysis via GC-MS

Sigma-Aldrich presents an article about the analysis of melamine and related compounds in dog food with the use of more economical gas chromatography-mass spectrometry (GC-MS) instrumentation.

Ionic Liquids

Ionic Liquids have experienced a comet-like boost in the last few years. In this edition of ChemFiles, we highlight some current applications of this fascinating class of new materials. We present over 50 new additions to our portfolio of 130+

Sample Preparation for Size Exclusion Chromatography

Samples for chromatographic purification should be clear and free from particulate matter. Simple steps to clarify a sample before beginning purification will avoid clogging the column, can reduce the need for stringent washing procedures, and can extend the life of

Analysis of Pesticides in Turmeric Powder by LC/MS/MS and GC/MS/MS after Cleanup with Dual-Layer SPE Cartridge

Pesticide residue testing of turmeric and other (dried) spices is challenging due to their complex compositions and high matrix. An efficient SPE clean-up can be achieved by a new Dual-layer cartridge.

Sample Preparation for Chromatographic Purification

This page discusses various aspects of sample preparation for chromatographic purification.

ENVI-Carb Plus for the Extraction of Propylene Glycol and Ethylene Glycol from Water

Analysis of Pesticide Residues in Ginger Powder Using QuEChERS Extraction and Clean-up with a Novel Dual Layer SPE Cartridge

The odor and pungency of ginger is due to the presence of terpenes, gingerols and shogaols. These compounds contribute to the highly complex matrix of ginger, which subsequently presents a challenge in low level analyses of contaminants. A novel 2-layer

Barrier Formation and Permeability Assays using Millicell^® Hanging Cell Culture Inserts

How to set up barrier formation and permeability assays using cell culture inserts and TEER measurements.

Recent Advances in Scalable Synthesis and Processing of Two-Dimensional Materials

Advances in scalable synthesis and processing of two-dimensional materials

Multiplexed Evaluation of Soluble Immune-Checkpoint Molecules | MILLIPLEX® Assays

Research evaluating immune checkpoints may help identify those likely to benefit from PD-1/PD-L1 immunotherapy and reveal new immunotherapy targets for future investigation. See how the MILLIPLEX® Human Immuno-Oncology Checkpoint Protein Panel 2 was used to multiplex immune checkpoint molecules for

Sample Preparation for Affinity Chromatography in Specific Groups of Biomolecules

Electrospun Nanofibers for Drug Delivery Systems

Local delivery of bioactive molecules using an implantable device can decrease the amount of drug dose required as well as non-target site toxicities compared to oral or systemic drug administration.

Sample Preparation in Ion Exchange Chromatography

This page clarifies sample preparation, buffer exchange and desalting, removal of lipoproteins, phenol red, and low molecular weight contaminants in Ion exchange chromatography.

Protein Affinity Chromatography

Affinity chromatography is the process of bioselective adsorption and subsequent recovery of a compound from an immobilized ligand. This process allows for the highly specific and efficient purification of many diverse proteins and other compounds. The process requires

Organic and Hybrid Electronics in Optical Analytical Applications

Professor Shinar (Iowa State University, USA) summarizes the developments of a variety of sensor configurations based on organic and hybrid electronics, as low-cost, disposable, non-invasive, wearable bioelectronics for healthcare.

Isotopic Labeling for NMR Spectroscopy of Biological Solids

Isotopic Labeling for NMR Spectroscopy of Biological Solids;

Graphene-Based Composites and their Unique Renewable Energy Applications

Graphene is a unique two-dimensional (2D) structure of monolayer carbon atoms packed into a dense honeycomb crystal that has attracted great interest due to its diverse and fascinating properties.

2D MXenes Ink: Synthesis, Properties, and Their Precursors

Optimizing the synthesis of high-quality 2D MXene flakes for 3D ink printing is essential to such technological developments as printable and flexible electronics.

Lithography Nanopatterning Tutorial

Tutorial Lithography Nanopatterning at Sigma-Aldrich. Lithography, based on traditional ink-printing techniques, is a process for patterning various layers, such as conductors, semiconductors, or dielectrics, on a surface.

Poly(2-oxazoline)s (POx) in Biomedical Applications

Poly(2-oxazoline)s (POx) can be viewed as conformational isomers of polypeptides. They are synthesized via living cationic ringopening polymerization (LCROP) of 2-oxazolines and were almost simultaneously discovered in 1966 by the groups of Litt, Tomalia, Fukui and Seeliger.

1/2