For cocamidopropyl betaine, a dry-residue result should not automatically be labelled active surfactant. Retain the specific active-matter definition and the separately reported salt content when comparing grades.
Read the product data field by field
The BASF Dehyton PK 45 product data sheet reports composition-related fields separately. It describes that product, not an ENVO CAPB grade. Ask the offered supplier to explain what a quoted concentration means and which method supports it.
In a deliberately simplified hypothetical material, dry residue is 40% and separately established salt is 6% of the supplied mass. Subtracting gives 34% remaining dry matter. That number is not automatically a validated CAPB active assay, because the identity of the remaining components and the methods still matter.
| Field | Conclusion to avoid |
|---|---|
| Dry residue | Calling every dry component CAPB |
| Salt | Assuming it accounts for every non-active component |
| Defined active matter | Assuming it establishes every formulation property |
Make the commercial comparison explicit
If price is compared per kilogram of actives, use an agreed and comparable active assay. If the contract is for a particular composition, compare the whole specification. Do not use one supplier’s dry residue and another’s active matter in the same denominator.
This is a composition question, separate from the existing investigation of salt-curve behaviour. Send ENVO the current CAPB grade, the concentration definition and required component data. A representative application trial is still needed before a composition match becomes a qualified formulation substitution.
Related decisions
- CAPB residual amidoamine: ask for a defined test rather than a “mild” claim
- CAPB in IBCs: reconcile net mass, volume and the concentration basis
Review Cocamidopropyl betaine product identity and purchasing requirements. For the decision above, send ENVO your application, acceptance criteria, quantity and destination. Confirm the offered grade and available documents before ordering.
Technical references support the stated material or test method. Confirm the offered grade and current acceptance criteria for your application. Quality and document guidance
Share your application, target properties and test conditions to discuss the next step.
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