EMAIL THIS PAGE TO A FRIEND
306320 Sigma-Aldrich

Inhibitor removers

Prepacked column, for removing tert-butylcatechol

Purchase

Properties

Related Categories Glass Chromatography Columns, Glassware, Labware, Prepack Columns
vapor pressure   17 mmHg ( 20 °C)
InChI Key   TWNQGVIAIRXVLR-UHFFFAOYSA-N

Description

Application

Ready-to-use, prepacked, disposable columns for removal of the commonly used inhibitor 4-tert-butylcatechol.

General description

Inhibitor-remover packings and ready-to-use, disposable prepacked columns conveniently remove small amounts of inhibitors which are added to reagents or solvents that would otherwise be unstable. R: 20-37 S: 22-38-36
• Useful in applications which require that the stabilizer or inhibitor (hydroquinone (HQ), hydro-quinone monomethyl ether (MEHQ, 4-methoxyphenol), or 4-tert-butylcatechol (TBC) be removed prior to use.
• Columns may be discarded1 when exhausted or reused by filling column approximately 3/4 full with new packing material. HQ/MEHQ columns refill vol.: ~21g. TBC column refill vol.:~30g.
• Approx. column capacity:
HQ/MEHQ: 3L at 100ppm
TBC: 4L at 15ppm
• TBC columns and packings are not recommended for use with polar solvents, including acrylic acid. Vacuum distillation is suggested for such applications.
Easy-to-use:
1.
Prewashing of prepacked glass columns with a small amount of monomer is recommended.
2. Add monomer (or solvent) to an addition funnel which is secured above column.
3. Add monomer dropwise to the column. Monitor rate of addition to prevent overflow of the column. Collect monomer in an appropriate container.
4. For low-melting solid monomers, keep temperature of column above the melting point during use.
Caution: Overheating may cause monomer to polymerize on the column. Viscous or high-melting monomers may be diluted in an appropriate solvent before addition to the column.
1Unused columns can be discarded with other solid chemical waste. After use, the toxicity and hazards of the monomer, from which the inhibitor is being removed, should be considered in deciding how to dispose of the packing material or column.

Packaging

1, 12 ea in glass tube

Safety & Documentation

Safety Information

RIDADR 
NONH for all modes of transport
WGK Germany 
nwg
Protocols & Articles

Articles

Initiator/Stabilizer FAQs

In a free-radical addition polymerization, the choice of polymerization initiator depends mainly on two factors: a) its solubility and b) its decomposition temperature. If the polymerization is perfo...
Dr. S. S. Newaz
Material Matters 2006, 1.1, 3.
Keywords: Bacterial conjugations, Chromatography, Column chromatography, Emulsion polymerization, Polymerization reactions, Precipitation, Radical polymerization

Related Products

related product

Product #

Description

Add to Cart

S4972 Styrene, ReagentPlus®, contains 4-tert-butylcatechol as stabilizer, ≥99%

Technical Service:

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Bulk Ordering & Pricing:

Need larger quantities for your development, manufacturing or research applications?