How to find the right Chemical Solvents AI guide
Written by an AI model from its trained knowledge.
What the AI looks for in Chemical Solvents
- Grade for technique
- Use LC-MS grade for mass spec, HPLC grade for UV detection, spectrophotometric grade for UV-Vis and anhydrous grade for moisture-sensitive synthesis. Each grade controls a different contaminant: ions, UV absorbers, residue or water.
- UV cutoff and residue
- Check the stated UV cutoff and residue after evaporation for chromatography. These drive baseline noise and ghost peaks.
- Stabilizers
- Check the stabilizer: chloroform with ethanol or amylene, THF with or without BHT. BHT absorbs in the UV and ethanol changes reactivity.
- Peroxide formers
- Date ether and THF on opening and test for peroxides per your safety program. Peroxides become explosive on concentration.
- Water content
- Anhydrous solvents should state Karl Fischer water and come in septum-sealed bottles. Moisture kills organometallic and coupling reactions.
Brands that matter
- Honeywell Burdick & Jackson: High-purity HPLC and GC solvents.
- Fisher Chemical: Optima LC/MS and HPLC solvents.
- Sigma-Aldrich (MilliporeSigma): Anhydrous solvents in Sure/Seal bottles.
- J.T. Baker (Avantor): Reagent and HPLC solvents.
- Pharmco (Greenfield Global): Bulk solvents across grades.
What to avoid
- Technical or hardware-store solvents for chromatography
- Unstabilized THF or ether stored long after opening
- LC-MS work with plain HPLC-grade solvent