8 Advantages of Tyloxapol (CAS 25301-02-4)

Tyloxapol is a nonionic polymeric surfactant that combines solubilizing, emulsifying, wetting and cleaning in one water-miscible liquid. It works at very low concentrations and is backed by decades of citable science—which is why it keeps showing up in eye drops, contact lens care solutions and lipid research.

The eight advantages of Tyloxapol：

1. Works at very low dosage. A critical micelle concentration of 0.018 mM means micelles form early—which is valuable when excipient load, tonicity and viscosity must stay tightly controlled in eye drops.

2. Wide thermal window. Together, a cloud point of 94.3°C and a closed-cup flash point of 113°C leave comfortable headroom for warm compounding and handling.

3. Nonionic and comparatively mild. Because it has no charged head group, it carries less risk of protein denaturation and is more compatible with sensitive ocular and mucosal formulations than ionic surfactants.

4. One excipient, four jobs. It works as a solubilizer, emulsifier, wetting agent and cleaner/lubricant in one, which can shorten the excipient list you need to qualify.[3]

5. Easy to dose. Because it is a water-miscible liquid polymer, it needs no pre-melting or solvent pre-wetting and can be added directly by weight.

6. Well-documented science. Its identity is recorded in PubChem and ChEBI, and its lipoprotein-lipase mechanism has a long peer-reviewed record—both useful for regulatory write-ups and method justification.

7. Cross-format versatility. The same CAS number serves ophthalmic liquids, otic liquids, lens care products, niosome research and in vivo lipid models, so one qualified supplier can cover several projects.

8. More supply options. Industry reporting describes domestic production and FDA DMF filing for Tyloxapol, which gives buyers dual-sourcing, lead-time and cost levers beyond a single historical source.

Quick FAQ

1.Why is Tyloxapol effective at very low inclusion levels?

Its critical micelle concentration is 0.018 mM, so micelles—the structures that solubilize hydrophobic molecules—form at very low concentrations. Formulators can get a clear, stable aqueous system without pushing excipient load, tonicity or viscosity out of range.

2.What does being nonionic mean for ophthalmic formulations?

Tyloxapol carries no charged head group, which makes it comparatively mild toward proteins and biological membranes and less prone to the irritation or incompatibility issues associated with ionic surfactants. Finished-product ophthalmic safety still has to be validated for each formulation.

3.What should I check before buying Tyloxapol CAS 25301-02-4?

Verify the CAS number and grade on a lot-specific COA, review the current SDS, confirm the pharmacopeial standard your market requires, and ask whether DMF or other registration support files are available. Also confirm packaging, shelf life and change-control notification terms.