Formulation Card
FC-12.5-M
Pre-Wash Stain Treatment
Ingredients
| Ingredient | Function | % w/w |
|---|---|---|
| C₁₂–C₁₄ alcohol ethoxylate (AE9) | Primary surfactant | 12.0–18.0 |
| C₁₂–C₁₄ alkyl sulfate (Na salt) | Cleaning boost | 3.0–6.0 |
| Dipropylene glycol n-butyl ether (DPnB) | Co-solvent, grease penetration | 8.0–12.0 |
| Propylene glycol | Co-solvent, humectant | 5.0–8.0 |
| Protease enzyme liquid (≥500 000 U/g) | Protein stain hydrolysis | 1.5–3.0 |
| Xanthan gum | Rheology modifier | 0.8–1.5 |
| Hydroxyethyl cellulose (30 000–50 000 mPa·s) | Co-thickener | 0.3–0.6 |
| Sodium citrate | Buffer, chelator | 1.0–2.0 |
| Preservative (MIT/CMIT, 3:1) | Microbial preservation | 0.05–0.10 |
| Deionized water | Diluent | qs to 100.0 |
| Final specifications: viscosity = 3 000–8 000 mPa·s; pH = 6.5–7.5 |
Expected Parameters
The high surfactant content (15–24% total) combined with glycol ether solvents provides strong penetration of hydrophobic stains. DPnB (HLB ~10) displaces oily soils from fibers upon mechanical rubbing. The gel matrix uses xanthan gum for shear-thinning rheology and hydroxyethyl cellulose for surface film formation, preventing wicking beyond the stained area . Target viscosity of 3 000–8 000 mPa·s ensures the product clings to vertical fabric surfaces for the recommended 5–10 minute dwell time. The near-neutral pH (6.5–7.5) maximizes protease activity. Not suitable for wool, silk, or other protein fibers where protease may attack the fabric.
Formulation Notes
Pre-wash treatments are applied directly to fresh stains before the main wash and must remain localized without running, demanding a gel or high-viscosity vehicle.
Formulation Card FC-12.5-M: Pre-Wash Stain Treatment Gel