lithium hexafluorophosphate (CAS 21324-40-3) sourcing notes

When a sourcing manager asks us whether our lithium hexafluorophosphate (CAS 21324-40-3) spec is acceptable, we don't just say yes or no. We look at your Battery & New-Energy Materials conditions first, then back into the indicators to verify. This page follows that same method.

What it actually does here

Bottom line first, then the why:

In Battery & New-Energy Materials, what matters with lithium hexafluorophosphate (CAS 21324-40-3) is whether it stays stable and reliable inside the operating window. Take an electrolyte lithium salt: dissolved in a blended carbonate solvent it dissociates into lithium ions that carry charge between electrodes, and ionic conductivity plus current-collector compatibility depend heavily on the salt itself. The ability to passivate aluminium, cost and safety trade-offs often matter more than a single purity figure. Related solvents and materials:

• Lithium carbonate (CAS 554-13-2)：a comparable grade often evaluated alongside。
• bistrifluoromethanesulfonimide lithium salt (CAS 2043073-41-0)：a comparable grade often evaluated alongside。
• Rubidium carbonate (CAS 584-09-8)：a comparable grade often evaluated alongside。
• Rubidium chloride (CAS 7791-11-9)：a comparable grade often evaluated alongside。
• Cesium carbonate (CAS 534-17-8)：a comparable grade often evaluated alongside。
• Rubidium iodide (CAS 7790-29-6)：a comparable grade often evaluated alongside。
• Cesium chloride (CAS 7647-17-8)：a comparable grade often evaluated alongside。
• Cesium Sulfate (CAS 10294-54-9)：a comparable grade often evaluated alongside。

Thinking through the choice

If I had to pick one, it'd be: Batch-to-batch consistency beats price: water, free acid, metal impurities and insolubles directly affect cycle life and safety.

State the use case (power / storage / low-temperature), target temperature range and matched cathode chemistry so the supplier advises a realistic grade, not just a 'standard' one.

Packaging is typically moisture-proof and sealed, sometimes under inert atmosphere; transport follows the applicable chemical-logistics compliance rules.

Beyond the supplier COA, retain samples of critical lots and run third-party checks so incoming inspection becomes routine.

Its typical specs: name lithium hexafluorophosphate, CAS 21324-40-3, formula F6LiP, MW 151.98 g/mol, standard purity per batch COA, packaging confirmed per order, storage keep sealed in a cool, dry place. Final values follow the batch COA and order confirmation.

Where most cases go wrong

Watching purity but ignoring water and free acid: both accelerate decomposition and corrode electrodes, a leading cause of failure.

Assuming a 'universal formulation': real electrolyte ratios are tuned per cathode and safety margin — there is no single fixed recipe.

Loose storage and handling: moisture- and oxygen-sensitive materials degrade on exposure, hurting whole-batch consistency before you notice.

A few things people ask

What role does lithium hexafluorophosphate play in the system?

As a key material in Battery & New-Energy Materials it carries charge transport or interface stability; its contribution depends on the overall formulation and process window, not one isolated figure.

What should I check when sourcing lithium hexafluorophosphate?

Beyond routine purity, watch the lot-to-lot limits on water / free acid / metal impurities / insolubles, plus moisture-proof packaging and compliant transport.

What about storage and transport?

Moisture- and oxygen-sensitive grades need sealed, dry, preferably inert handling; transport follows applicable chemical-logistics rules, and on receipt verify the batch COA, with third-party retest where critical.

Further reading

• bistrifluoromethanesulfonimide lithium salt (CAS 2043073-41-0)
• Rubidium carbonate (CAS 584-09-8)
• Rubidium chloride (CAS 7791-11-9)
• Cesium carbonate (CAS 534-17-8)
• Rubidium iodide (CAS 7790-29-6)
• Cesium chloride (CAS 7647-17-8)

See site search for lithium hexafluorophosphate or browse the Organic Chemicals directory.

Procurement contact

Jinan Shenghe Chemical Co., Ltd. supplies chemical raw materials and fine chemicals; a COA ships with every batch, with MSDS and technical data sheets available on request. In your enquiry include product name, CAS, target purity and packaging, and we will provide documents and a quote to the relevant standard.

Contact: info@591daili.com | +86-18553102138

Note: This page is for industrial raw-material technical discussion only. Products are supplied for industrial and research use, not for consumer or medical use. Drinking-water, food, cosmetic or pharmaceutical applications must meet applicable regulations and customer standards; specifications, compliance documents and transport requirements follow the batch COA and order confirmation.