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  • Polysorbate 60 (Tween 60) CAS 9005-67-8

Polysorbate 60 (Tween 60) CAS 9005-67-8

Polysorbate 60 , also called Tween 60 or polyoxyethylene sorbitan monostearate , is a nonionic surfactant identified by CAS No. 9005-67-8 . It is a composition distribution rather than a silicone-polyether defoamer or one pure molecule. The material is evaluated mainly as an emulsifier, dispersing aid and solubilizing component. Sorbitan Monostearate (Span 60) is the related non-ethoxylated stearate option for more lipophilic emulsifier selection. Buyers should qualify the offered grade through its composition, analytical specification, application trial, COA, TDS and SDS.

  • CAS: 9005-67-8
  • Synonyms: Polysorbate 60, Tween 60, Polyoxyethylene Sorbitan Monostearate, PEG-20 Sorbitan Stearate, POE(20) Sorbitan Monostearate
  • Einecs: 500-020-4
  • Molecular Formula: Variable polyoxyethylene sorbitan stearate composition
  • Grade: Confirm the commercial grade code, composition or active matter, key analytical values, physical form and intended-use documents against the current TDS and COA.
  • Package: State required quantity, physical form and destination; confirm the current bag or container, liner, net weight, temperature handling and transport requirements before quotation.
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Product Description

Identity and physicochemical profile

ItemTechnical guidance
Product identityPolysorbate 60 (Tween 60); polyoxyethylene sorbitan stearate
CAS / EC9005-67-8 / 500-020-4
CompositionReaction-product distribution; the CAS number does not define one exact ethoxylate chain length or one molecular formula
Typical physical formCreamy, waxy or semi-solid material depending on composition, temperature and the supplied specification
Key quality controlsAcid value, saponification value, hydroxyl value, water, appearance, color and supplier-defined emulsification performance
Identity boundaryDo not describe this CAS number as a silicone-polyether defoamer; antifoam performance would require a separately identified formulated product and supporting data

Applications and grade selection

Polysorbate 60 is commonly evaluated as a hydrophilic nonionic emulsifier, co-emulsifier, wetting aid or solubilizing component in formulated products. Its suitability depends on the oil phase, co-emulsifiers, electrolyte, pH, temperature, process and the documentation attached to the exact grade.

  • For substitution, compare composition-related values and physical form before running emulsion stability, viscosity and temperature-cycle testing.
  • Do not confuse Polysorbate 60 with Span 60: Span 60 is the non-ethoxylated, more oil-affine sorbitan stearate identified by CAS 1338-41-6.
  • Food, pharmaceutical or personal-care use requires a specifically documented grade and market-specific compliance review; an industrial listing alone is not evidence of suitability.

Storage and handling

Keep the original package closed in a dry, ventilated area within the temperature range stated by the supplier. If the product becomes waxy or more viscous, follow the exact-grade TDS for conditioning, mixing and sampling; do not apply a generic freeze-recovery instruction.

Safety, documentation and procurement

Use the current SDS for personal protection, incompatibilities, transport, spill response and disposal. A sourcing request should state the intended application, reference grade or COA, analytical limits, trial quantity, annual demand, package, destination and any regulated-use documentation required.

For related sorbitan and polysorbate emulsifier pages, compare Polysorbate 80 (Tween 80) and Sorbitan Monostearate (Span 60).

FAQ - Technical & Supply Chain

  • Q:

    Which Polysorbate 60 grade should I request?

    A: State whether the application is food, pharmaceutical, personal care or industrial. The offered grade should match the relevant specification, including acid, hydroxyl and saponification values, water, fatty-acid composition and any required compendial or market documentation.
  • Q:

    Can Polysorbate 60 replace Span 60 in an emulsion?

    A: Not directly. Polysorbate 60 is the more hydrophilic ethoxylated surfactant, while Span 60 is oil-affine sorbitan stearate. They may be paired to tune an emulsifier system, but the ratio and process require formulation trials.
  • Q:

    Why is Polysorbate 60 sometimes a paste and sometimes a waxy solid?

    A: Physical form changes with grade composition, temperature and thermal history. Before sampling or charging, follow the supplied conditioning and mixing instructions so the material is homogeneous; do not reject a lot on appearance alone.
  • Q:

    How should a replacement Polysorbate 60 be approved?

    A: First compare specifications, test methods and a recent COA. Then run the intended formula at production-relevant conditions and assess emulsification, viscosity, appearance, odor and stability through the required temperature and storage cycle.
  • Q:

    What information helps us quote Polysorbate 60 correctly?

    A: Send the use sector, reference grade or COA, required analytical limits, package size, trial quantity, annual demand and destination. Include any USP, NF, food or cosmetic documentation requirement before a sample is selected.

Ordering & Documentation

Key information for document requests, quotations, and supply planning.

Documents

COA, TDS, SDS/MSDS and packing details are available on request.

Quotation

Send the CAS number, grade, quantity, packing preference and destination.

Sample & Supply

Support is available for samples, trial orders, bulk and repeat supply.

Storage & Shipping

Product-specific conditions are confirmed before order.

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