FC-5.8-P
Industrial Laundry Powder
Ingredients
| Material | % w/w | Function |
|---|---|---|
| LAS (80%) | 18.0 | Primary surfactant |
| Sodium metasilicate (pentahydrate) | 12.0 | High alkalinity |
| Soda ash (light) | 20.0 | Builder, alkalinity |
| STPP (where permitted) | 15.0 | Sequestrant, dispersant |
| Sodium sulfate | 12.0 | Filler |
| CMC | 0.8 | Anti-redeposition |
| NaBr | 0.3 | Hypochlorite stabilizer |
| CBS-X | 0.15 | Whiteness |
| Silicone antifoam (20%) | 0.35 | Foam control |
| Perfume (institutional) | 0.2 | Masking odour |
| Sodium chloride | 5.0 | Texture control |
| Sodium bicarbonate | 3.0 | pH buffer |
| Moisture | 3.0 | Residual |
| Soda ash (balance) | 10.2 | Alkalinity adjustment |
| Total | 100.0 |
Formulation Notes
[Attributes table]
Raw Materials
Active matter: 25.4% ± 0.8%. pH 1%: 12.0–12.8. Process (Dry Mix): Blend all solids in ribbon blender (8 min at 20 rpm). Spray perfume last. Pack in 25 kg sacks with PE liner.
Safety Notes: pH > 12.0 causes serious eye damage and skin burns (CLP Category 1). PPE: chemical goggles, nitrile gloves, apron. Verify STPP permitted locally.Expected Problems & Solutions: Fabric damage at 90 °C: add 0.5% sodium borate or limit to 60 °C. Aluminium corrosion: metasilicate attacks Al — verify machine metallurgy.
QC Tests: Active matter (24.6–26.2%); pH 1% (12.0–12.8); alkalinity as Na₂O (≥ 18%); bulk density (650–850 g/L); foam (≤ 40 mm).
Cost Notes: ~USD 0.85–1.10/kg. STPP at 15% = ~20% of cost; where banned, substitute zeolite (18%) + polycarboxylate (2%) + MGDA (1%) at ~15% premium.