Sodium Cumene Sulfonate Dosage & Formulation Guide
Getting the hydrotrope dose right is the difference between a clear, stable product and a cloudy, separating one. This guide gives practical starting doses by application, addition-order tips and a simple 40%↔90% conversion.
Quick answer: As a rule of thumb, dose Sodium Cumene Sulfonate at 1–8% of product weight (as-supplied 40% grade), with ~3% a common starting point at 20% surfactant active matter. Add it into the water phase before building viscosity, then fine-tune to hit clarity and cold-stability targets. To convert, ~1 kg of SCS 90 replaces ~2.25 kg of SCS 40 on an active basis.
Typical starting doses by application
| Application | Typical SCS dose (as-supplied 40%) | Note |
|---|---|---|
| Liquid laundry / dishwash | 2–6% | Start ~3%; raise for higher active/electrolyte |
| All-purpose / alkaline cleaner | 3–8% | Higher builder load needs more coupling |
| Shampoo / body wash | 1–4% | For clarity + viscosity control |
| Agrochemical SL/EC | 2–6% | Optimise for tank-dilution stability |
| Concentrates / powders | Use SCS 90% | Avoid shipping/holding water |
Formulation & addition-order tips
- Add SCS into the water phase early, before thickening — it reduces gelling as surfactants are added
- Increase dose stepwise until the product stays clear at your lowest expected storage temperature (cloud-point target)
- For powders, dry-blend SCS 90% uniformly; for concentrates, dissolve fully before adding electrolytes
- If a formula is over-thick, SCS can reduce viscosity for accurate filling
- Always confirm with a small lab trial for clarity, viscosity, cold and freeze-thaw stability
Converting between 40% liquid and 90% powder
Match the active, not the as-supplied weight. Since 40% is 0.40 active and 90% is 0.90 active, multiply your SCS 40 weight by 0.40/0.90 (≈ 0.44) to get the SCS 90 weight, and add back the water you removed. Example: replacing 4.5 kg SCS 40 (1.8 kg active) needs ~2.0 kg SCS 90.
Frequently Asked Questions
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Send your grade (40% liquid or 90% powder), quantity, packaging, destination port and incoterm. Vasudev Chemo Pharma — an ISO 9001:2015 certified manufacturer in Gujarat, India — replies within 24 hours with price, lead time, COA/SDS and a free evaluation sample.