Lab Desiccants and Drying Agents
Hygroscopic substances and drying agents for use in laboratory settings; drying agents are commonly used to keep other substances and samples dry, or to prevent moisture from forming on/in containers. Products include drying tubes, kits, etc.
Desiccants are typically chemicals or compounds that are hydroscopic (readily absorb moisture). Common desiccants include clays, silica gels, and calcium sulfate.
In the lab, desiccants are commonly used in desiccators and desiccator cabinets, with in-line air and gas drying columns, in absorption bulbs, U-tubes, glove boxes, sealed chambers, and wherever a dry environment is required. They are also used during transport, for storage, and maintaining materials and products ─ everything from clothing to electronics.
The moisture may come from a variety of sources:
- Water vapor in the air
- Moisture in packaging materials
- Moisture from permeation or leakage
Some desiccants contain an indicator or additive that produces a color change with moisture absorption. The indicator allows the user to see when the desiccant has absorbed its maximum amount of moisture and needs to be replaced or regenerated.
Some desiccants can be reused many times simply by heating them in an oven to allow moisture to evaporate. For indicating desiccants, one can also easily tell when the desiccant is again ready to use by the change back to the original color.
Desiccants may be available in a range of mesh or particle sizes. The Tyler Equivalent is a common type of mesh sizing and indicates the number of openings per linear inch of mesh. Common desiccant mesh sizes are 4, 8, and 10 to 12. Size 4 is typically used in gas phase applications; they are larger and less likely to break. Size 8 is smaller and can be more tightly packed.
Thomas Scientific Ascarite II CO2 Absorbent 8-20 Mesh 50 kg
Ascarite II CO2 Absorbent 8-20 Mesh 50 kg
Thermo Scientific IS5 Desiccant Replacement Kit 2 EA
A desiccant replacement kit designed for IS5™ desiccants containing desiccant packets, screens, springs, and seals tailored for replacing the desiccant in an IS5™ desiccant unit to help maintain its moisture absorbing capabilities
Strem, An Ascensus Company CAS# 112926-00-8. 10g. Metals scavenging agent, Mercaptopropyl modified silica (BASF MSA-FC Si-3). MFCD07370733
CAS# 112926-00-8. 10g. Metals scavenging agent, Mercaptopropyl modified silica (BASF MSA-FC Si-3). MFCD07370733. Molecular Weight: . Molecular Formula: . Color/form: d50=83mum; white to slightly yellow pwdr. Strem# 14-4353. http://www.strem.com/catalog/v/14-4353/
Sorbent Technologies Inc Activated Alumina Spheres, 1/8in, 3.2mm, 1kg
The activated alumina spheres are very porous, have a high surface area, and do not change form. They will not soften or disintegrate when immersed in liquids. When used to adsorb water, they act as an efficient desiccant. Molecules with the highest polarity are preferentially adsorbed. In the absence of irreversible fowling, they may be regenerated by heating to a temperature between 177-316C. Applications: Drying and purification of organic liquids and gases; adsorption of heavy metals such as fluorides, phosphates, arsenic acids, and humic acids; purification of processing liquids, industrial water, and waste water by removing highly polar compounds such as: TBC, alcohols, ethers, etc.; removal of acids formed from the degradation of transformer oils, lubricating oils, and refrigerants; removal of residual halides and water during the manufacture of chlorinated and/or fluorinated hydrocarbons, yielding a non-corrosive product.
eMolecules 112926-00-8 | Silica gel 40-60Angstoms | Oakwood Chemical | MFCD00011232 | 60.083 | O2Si | 99.000 | O=[Si]=O | 2.5kg | 716243456
Silica gel 40-60Angstoms | Oakwood Chemical | 112926-00-8 | MFCD00011232 | 60.083 | O2Si | 99.000 | O=[Si]=O | 2.5kg | 716243456
Uline Silica Gel Desiccants - Gram Size 1, 5 Gallon Pail
Silica Gel Desiccants - Gram Size 1, 5 Gallon Pail
eMolecules Oakwood Chemical Silicagel 60A 40-63 micron 5kg 761508148 LC4005 0 000 7631-86-9 MFCD00011232 60 083 O2Si
Oakwood Chemical Silicagel 60A 40-63 micron 5kg 761508148 LC4005 0 000 7631-86-9 MFCD00011232 60 083 O2Si
Medchemexpress LLC Industrial liquors, corn steep liquor | 66071-94-1 | MFCD00130866 | 45.0% | 500 G
Corn steep liquor is an industrial by-product used as a nutrient supplement in liquid culture media for microorganisms and fungi. Supplied as a dried powder, it delivers proteins and minerals that support mycelial growth and secondary metabolite production, and is suitable for fermentation and cultivation workflows.
- Nutrient-rich additive for microbial and fungal cultures.
- Supports increased mycelial growth and secondary metabolite production.
- Contains 45.0% total protein (on a dry basis).
- Low moisture content (7.4% loss on drying) for stability.
- Slightly acidic when prepared (pH 4.14 at 5% in water).
- Solid, yellow to brown powder for easy handling and dosing.
Electron Microscopy Sciences Desiccant Cartridge, Small
These desiccant cartridges can be used in desiccator cabinets or non-vacuum desiccators, analytical balance cases, and precision laboratory instruments. The clear polystyrene dish allows for instant visual inspection of the silica gel color which changes from blue to pale pink as it absorbs moisture.
A highly porous membrane covers the dish of the desiccant providing good moisture absorption. The desiccant can be regenerated by heating cartridges in an oven at 50 degree C (122 degree F) overnight or in a 150 degree C (302 degree F) oven for one hour. The silica gel is inert and non-toxic. Each cartridge is individually sealed in aluminum foil. Dispose of the cartridges after repeated use.
Pfaltz & Bauer Drierite @ 8 Mesh With Indicat| 1 lb| 7778-18-9
Drierite @ 8 Mesh With Indicat| 1 lb| 7778-18-9
Electron Microscopy Sciences Desiccant Canister
Ideal for dry control of desiccator cabinets. Moisture is absorbed through the perforations in the aluminum case, which contains silica gel. This 2 x 4" canister maintains a safe level of humidity in 3cu.ft (0.8 cu. meter) area. When the monitor window turns pink, the silica gel is saturated. It can be regenerated in a 300 degree F (150 degree C) oven in about 3 hours. The monitor window will be blue in color when recharged.
eMolecules 2739866-40-9 | Neladalkib | Medchem Express | 452.92 | C23H22ClFN6O | 98 | CCn1nc(Cl)c2Cc3cn(C)nc3-c3ccc(F)cc3[C@@H](C)Oc3cc(cnc3N)-c12 | 100mg | 841055066
Ambeed | 2-Bromoisonicotinic acid | 10g | 552575714 | A139877 | 66572-56-3 | MFCD01646069 | 202.007 | C6H4BrNO2
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