蒸汽压
17 mmHg ( 20 °C)
质量水平
形式
beads
色谱柱尺寸
17 mm × 240 mm
InChI
1S/2Al.3O
InChI key
TWNQGVIAIRXVLR-UHFFFAOYSA-N
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一般描述
• 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。
应用
WGK
WGK 3
闪点(°F)
Not applicable
闪点(°C)
Not applicable
个人防护装备
Eyeshields, Gloves, type N95 (US)
Which document(s) contains shelf-life or expiration date information for a given product?
If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.
How do I get lot-specific information or a Certificate of Analysis?
The lot specific COA document can be found by entering the lot number above under the "Documents" section.
How do I find price and availability?
There are several ways to find pricing and availability for our products. Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote. USA customers: 1-800-325-3010 or view local office numbers.
How much can Product 306312, Inhibitor removers - Prepacked column for removing hydroquinone and monomethyl ether hydroquinone, hold at one time?
This product has a bed volume of approximately 30 mL.
What is the flow rate for Product 306312, Inhibitor removers - Prepacked column for removing hydroquinone and monomethyl ether hydroquinone?
According to the manufacturer of this inhibitor removal column, the maximum recommended flow rate is 4 bed volumes (approximately 120 mL) per hour.
Can Product 306312, Inhibitor removers - Prepacked column for removing hydroquinone and monomethyl ether hydroquinone, be used to remove butylated hydroxytoluene (BHT)?
This inhibitor remover is not intended to remove BHT present in a monomer solution; little, if any, BHT will be removed with this column. Unfortunately, Sigma-Aldrich does not currently offer a inhibitor-remover column that will accomplish this purpose.
Can Product 306312, Inhibitor removers - Prepacked column for removing hydroquinone and monomethyl ether hydroquinone, be used more than once?
This pre-packed inhibitor remover column is meant for single use but can be rinsed and reused. If time will pass between uses, this column can be rinsed with methanol, dried, capped on both ends, and stored in a tightly sealed plastic bag in the freezer at -20°C.
What is the Department of Transportation shipping information for this product?
Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.
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商品
An article regarding common FAQs for initiators and stabilizers.
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