Home > Compound List > Product Information
Inhibitor removers_Molecular_structure_CAS_)
Click picture or here to close

Inhibitor removers

Catalog No. 306320 Name Sigma Aldrich
CAS Number Website http://www.sigmaaldrich.com
M. F. Al2H2O3 Telephone 1-800-521-8956
M. W. 103.977156 Fax
Purity Email
Storage Chembase ID: 102051

SYNONYMS

Title
抑制剂清除剂
IUPAC name
oxo[(oxoalumanyl)oxy]alumane
IUPAC Traditional name
aluminium oxide

DATABASE IDS

EC Number 215-691-6
MDL Number MFCD00081548

PROPERTIES

Flash Point 96 °C
Flash Point 204.8 °F
Vapor Pressure 17 mmHg ( 20 °C)
GHS Pictograms GHS07
GHS Signal Word Warning
GHS Hazard statements H315-H319-H335
European Hazard Symbols Irritant Irritant (Xi)
MSDS Link Download
Personal Protective Equipment Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter
GHS Precautionary statements P261-P305 + P351 + P338
Risk Statements 36/37/38
Safety Statements 26-36
German water hazard class 3

DETAILS

Description (简体中文)
Application
即用型预包装一次性填充柱,用于除去常用抑制剂 4-叔丁基邻苯二酚
General description
抑制剂清除剂填充物和即用型一次性预包装填充柱可方便地除去试剂或溶剂中添加的少量抑制剂,这些抑制剂可使试剂或溶剂保持稳定。R:20-37 S:22-38-36
• 用于需要在使用前除去稳定剂或抑制剂(氢醌 (HQ)、对苯二酚单甲醚(MEHQ、4-甲氧基苯酚)或 4-叔丁基邻苯二酚 (TBC))的应用。
• 使用后填充柱可丢弃1,或用新的填充料填充全部容量的大约 3/4 即可再次使用。HQ/MEHQ 柱再填充量:约 21g。TBC 柱再填充量:约 30g。
• 近似柱容量: HQ/MEHQ:3L (100ppm) TBC:4L (15ppm)
• 建议不要将 TBC 柱和填充料用于极性溶剂,包括丙烯酸。建议这些应用中采用真空蒸馏。 操作简便: 1. 建议用少量单体预清洗预包装玻璃柱。 2.将单体(或溶剂)加入固定在柱上方的加料漏斗中。 3.将单体逐滴加入柱中。注意滴加速度,防止溢出柱。用适当的容器收集单体。 4.对于低熔点固态单体,使用过程中使柱温保持在熔点以上。 小心:过热可能使单体在柱上发生聚合。粘稠或高熔点单体应当用适当的溶剂稀释后再加入柱。 1未使用的柱可随固体化学废物一起丢弃。用过的填充料或填充柱应考虑单体(即将除去其中的抑制剂)的毒性和危害,再决定如何处理。
包装
1, 12 ea in glass tube
Description (English)
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 100ppmTBC: 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

REFERENCES