PROSOCO HCT – Hydroxylating Conversion Treatment for Marble & Limestone (5 Gallon)

STONE STRENGTHENER & ACID-RESISTANT TREATMENT

PROSOCO HCT (Hydroxylating Conversion Treatment) is a two-component, waterborne system designed to strengthen and protect carbonate stone surfaces such as marble, limestone, dolomite, and travertine.

This advanced treatment forms a stable conversion layer within the stone, significantly improving resistance to acid rain, air pollution, and environmental weathering. It enhances durability while preserving the natural appearance and breathability of the substrate.

Ideal for restoration and preservation projects, HCT helps extend the life of vulnerable stone surfaces without forming a surface film.

FEATURES / BENEFITS

• Strengthens and protects carbonate stone surfaces
  
• Increases resistance to acid rain and environmental damage
  
• Reduces surface deterioration and dissolution
  
• Forms no surface film—maintains natural appearance
  
• UV-stable with no yellowing or gloss
  
• Maintains vapor permeability—stone can breathe
  
• Enhances long-term durability of marble and limestone

TECHNICAL DATA

• Form: Clear, colorless liquid; slight odor
  
• VOC Content: Not applicable
  
• pH: 4.0 (± 0.2)
  
• Coverage Rate: 50–80 sq. ft. per gallon
  
• Shelf Life: 1 year (unopened)
  
• Freeze Point: 32°F (0°C)
  
• Flash Point: Not applicable
  
• Weight per Gallon: 8.39 lbs

AVAILABLE SIZES

• 5 Gallon

RESOURCES

• Product Data Sheet
• Safety Data Sheet
• Safety Data Sheet (Spanish)
• SDS Canadian French