ISOLUTE® HM-N is a modified form of diatomaceous earth. The support has many uses in reaction work-up, including:
The use of a support eliminates emulsion formation at the interface of the two liquids. All protocols using ISOLUTE HM-N are processed using gravity flow.
When removing polar compounds or salts from reaction mixtures, an aqueous solution is initially immobilized on the ISOLUTE HM-N support. As the reaction mixture is applied to the cartridge, water soluble impurities transfer to the aqueous phase with the target compound remaining in the water-immiscible organic solvent.
ISOLUTE HM-N removes trace amounts of water from water-immiscible organic solvents. The maximum amount of water that can be adsorbed is 750 µL per g of ISOLUTE HM-N. This capacity may vary depending on the solvent used.
Part No. | Description | Pack Size | List Price | |
---|---|---|---|---|
800-0040-BM | ISOLUTE® HM-N 0.3 mL Sample | 100 | 368 USD | Add to quote/cart |
800-0040-BMG | ISOLUTE® HM-N 0.3 mL Sample (Tabless) | 100 | 377 USD | Add to quote/cart |
800-0100-CM | ISOLUTE® HM-N 1 mL Sample | 100 | 291 USD | Add to quote/cart |
800-0100-CMG | ISOLUTE® HM-N 1 mL Sample (Tabless) | 100 | 311 USD | Add to quote/cart |
800-0700-FM | ISOLUTE® HM-N 10 mL Sample | 50 | 255 USD | Add to quote/cart |
800-1300-FM | ISOLUTE® HM-N 20 mL Sample | 50 | 321 USD | Add to quote/cart |
800-0220-DM | ISOLUTE® HM-N 3 mL Sample | 100 | 309 USD | Add to quote/cart |
800-0350-EM | ISOLUTE® HM-N 5 mL Sample | 100 | 338 USD | Add to quote/cart |
9800-1000 | ISOLUTE® HM-N Bulk 1 Kg | 1 | 266 USD | Add to quote/cart |
9800-10000 | ISOLUTE® HM-N Bulk 10 Kg | 1 | 2395 USD | Add to quote/cart |
9800-0025 | ISOLUTE® HM-N Bulk 25 g | 1 | 43 USD | Add to quote/cart |
9800-5000 | ISOLUTE® HM-N Bulk 5 Kg | 1 | 1232 USD | Add to quote/cart |
9800-0500 | ISOLUTE® HM-N Bulk 500 g | 1 | 178 USD | Add to quote/cart |
When it comes time to purify your reaction mixture or natural product extract, you have a choice to make. Should you simply load your dissolved sample onto your flash column or take the extra step to adsorb your mix onto a sorbent and dry it before loading? The choice can have a major impact on your results.
In this post, I will share results of work I conducted in my lab, comparing liquid and dry loading a reaction mixture that containing eight major components.
This is an interesting question that does not have a straightforward answer. In fact, there are many materials that are potentially useful sorbents for dry loading crude mixtures. Some of the more popular are silica, diatomaceous earth (e.g. ISOLUTE® HM-N, Celite®), alumina, and Florisil®. The sorbent choice can influence your purification results because each of the available media have different chemistry and capacity. In most cases, sample/sorbent reactivity really is not a major concern, though it can occur.
For chemists needing to purify natural product extracts or synthesis reaction mixtures flash chromatography is typically the tool of choice. In previous posts I have discussed various ways to optimize the purification to obtain the highest purity compounds with maximum load in minimal time.
Biotage is a global supplier and solutions partner to a wide range of customers within drug discovery and development and analytical testing. With strong expertise in separation and purification technologies, and a focus on leveraging intelligent workflow solutions, we aim to efficiently support the advancement and protection of human health.
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