HEDP Cleaning Solutions: Aluminum Brightening and Tanker Scale Removal
In industrial cleaning applications, selecting the right chemical solutions can significantly enhance efficiency while reducing environmental impact. We present three optimized formulations based on HEDP (Hydroxyethylidene Diphosphonic Acid) for aluminum alloy brightening and tanker truck calcium scale removal.
Solution 1: Glycolic Acid + HEDP
Best for: Aluminum surface cleaning & brightening
Key Benefits:
Superior oxide removal: Glycolic acid effectively chelates and removes oxidation layers
Metal protection: Hydroxyethylidene Diphosphonic Acid inhibits corrosion during cleaning processes
Eco-friendly: Safer alternative to nitric/hydrofluoric acid blends
Recommended Formula:
5-10% Glycolic Acid + 1-3% HEDP + surfactants (optional)
Optimal temperature: 40-60°C
Case Study:
An aluminum processor achieved 30% faster cleaning with superior surface finish and zero corrosion.
Solution 2: HEDP + Phosphoric Acid
Best for: Tanker truck CaCO₃ scale removal
Key Benefits:
High descaling power: Phosphoric acid dissolves scale while Hydroxyethylidene Diphosphonic Acid prevents redeposition
Equipment protection: Reduced metal corrosion versus phosphoric acid alone
Cost-effective: Lower acid consumption and waste treatment costs
Recommended Formula:
10-15% Phosphoric Acid + 2-5% Hydroxyethylidene Diphosphonic Acid
Ambient to 40°C for soak or circulation cleaning
Case Study:
A chemical logistics company achieved >95% scale removal with no tank pitting.
Solution 3: Pure HEDP Solution
Best for: Delicate metals or eco-sensitive applications
Key Benefits:
Mild acidity (pH≈2): Safe for copper, aluminum, and sensitive components
Dual function: Scale dispersion + corrosion inhibition
REACH compliant: Meets stringent environmental regulations
Recommended Formula:
3-8% Hydroxyethylidene Diphosphonic Acid+ DI water
Suitable for spray or ultrasonic cleaning
Case Study:
An electronics manufacturer successfully cleaned aluminum heat sinks without surface damage.
Solution Selector Guide
| Application | Recommended Formula |
| Aluminum brightening | Glycolic Acid + HEDP |
| Heavy calcium scale | HEDP + Phosphoric Acid |
| Sensitive metals/eco-requirements | Pure HEDP |
Contact our technical sales team for formulation support or samples.
