Formulation Card
FC-7.1-E
Economical Softener
economicalSource: Chapter 7 §7.2.1
Ingredients
| Component | INCI / Chemical Name | % w/w | Function |
|---|---|---|---|
| Esterquat active (90% aq.) | Di(palmiticcarboxyethyl)hydroxyethyl methyl ammonium methylsulfate | 6.70 | Cationic softening active |
| Deionized water | Aqua | 91.55 | Solvent / dispersion medium |
| Fragrances | Fragrance (proprietary blend) | 0.30 | Sensory appeal |
| Colorant (CI 42051) | Acid Blue 3 | 0.0005 | Visual identity |
| Preservative | 1,2-Benzisothiazolin-3-one (20% aq.) | 0.02 | Microbial stability |
| Calcium chloride solution (25%) | Calcium chloride | 0.03 | Viscosity trim |
| pH adjuster (lactic acid 88%) | Lactic acid | q.s. to pH 2.8–3.2 | Esterquat stability |
| Total | 100.00 |
Addition Order & Process
Manufacturing procedure: Charge deionized water into a vessel fitted with an axial-flow turbine impeller. Begin moderate-shear agitation (vortex formation). Slowly add the esterquat active to the vortex over 5–7 minutes. Continue mixing for 30 minutes at ambient temperature (20–25 °C) for uniform liposome formation . Add calcium chloride dropwise if viscosity exceeds 200 cP. Add fragrance (10 minutes mixing), preservative, and colorant. Adjust pH to 2.8–3.2 with lactic acid .
Expected Parameters
Key parameters: Active matter 6.0% ± 0.3% (ISO 2871, n=3); viscosity 80–150 cP (Brookfield LVT, 25 °C); pH 2.8–3.2 .
Formulation Notes
The economical softener represents the minimum viable formulation, delivering basic softening performance at the lowest raw material cost. The esterquat active is maintained at the lower functional limit, with the product relying entirely on the intrinsic viscosity of the liposomal dispersion for body.