Inhibitor removers
ALDRICH/311332 - replacement packing for removing hydroquinone and monomethyl ether hydroquinone
Synonym: inhibitor removal column
MDL Number: MFCD00081548
Product Type: Chemical
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material.
This image depicts SKU: 311332-250G
This image depicts SKU: 311332-250G
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material.
This image depicts SKU: 311332-500G
This image depicts SKU: 311332-500G
| autoignition temp. | 932 °F |
| form | beads |
| InChI | 1S/2Al.3O |
| InChI key | TWNQGVIAIRXVLR-UHFFFAOYSA |
| vapor density | <1 (vs air) |
| vapor pressure | 17 mmHg ( 20 °C) |
| 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 • 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: | 250, 500 g in poly bottle |
| RIDADR | NONH for all modes of transport |
| WGK Germany | nwg |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| UNSPSC | 12162002 |