Formulation Card
FC-9.1-P
Premium bathroom cleaner
premiumSource: Chapter 9 §9.1.3
Ingredients
| Ingredient | % w/w | Function |
|---|---|---|
| APG (50% active, C8–C14) | 3.0–5.0 | Nonionic surfactant, mildness |
| SLES (28%) | 2.0–3.0 | Co-surfactant, foam |
| Glycolic acid (70%) | 4.0–6.0 | Acid source, descaling |
| Polyquaternium-22 (40%) | 0.5–1.0 | Protective polymer, shine |
| BAC (50% solution) | 0.2 | Disinfectant (0.1% active) |
| Benzotriazole (BTA) | 0.05–0.1 | Corrosion inhibitor |
| Perfume capsules (encapsulated) | 0.3–0.5 | Long-lasting fragrance |
| Deionized water | to 100 | Carrier |
| Colorant | 0.001–0.005 | Aesthetic |
Addition Order & Process
Procedure: Charge water and glycolic acid; mix until homogeneous. Add APG and SLES sequentially with moderate agitation. Prepare BTA as a predissolved solution (1% in warm water) and add. Add polyquaternium-22 separately, allowing 15 min hydration time. Add BAC prediluted. Introduce perfume capsules last with low-shear mixing (200 rpm) to preserve capsule integrity. Adjust final pH with dilute NaOH.
Formulation Notes
Target parameters: pH 2.5–3.5; viscosity 100–300 cP; gloss improvement measurable by 60° glossmeter on ceramic tile.
APG provides nonionic surfactancy stable across pH 2.5–12 with excellent ecological profile and compatibility with anionic systems . Glycolic acid () penetrates limescale microstructures efficiently due to its small molecular size (76.05 g/mol) . Polyquaternium-22 deposits a water-soluble conditioning film that enhances visual gloss and reduces subsequent soil adhesion through a cationic surface charge modification . This formulation is suitable for all water-resistant bathroom surfaces except natural stone; at pH 2.5–3.5, prolonged contact can etch calcium carbonate-based stones.