D/2 Biological solution

Description

A quaternary ammonium solution with added surfactants designed to clean stones and other outdoor surfaces. D/2 Biological Solution website states the it is effective for removing harmful biological and air pollutant staining from many building materials including masonry, marble, granite, limestone, brownstone, travertine, terra cotta, concrete, stucco, wood, canvas and vinyl & aluminum siding. The website recommends a contact time of only 10 to 15 minutes followed by scrubbing with a soft nylon or natural bristle brush will loosen most biological and air pollutant staining followed by through rinsing.

Synonyms and Related Terms

D2

Applications

Remove biological and air pollutant staining from stone, wood, canvas and vinyl & aluminum siding

Risks

Working Properties

Forms and Sizes

Physical and Chemical Properties

Transparent, low viscosity liquid
Soluble in water
Color: Almost colorless
pH: 9.5
Specific Gravity: 1.01g/cc
Vapor Pressure: 25 mm Hg @ 20°C

Resources and Citations

D/2 Biological Solutions: Website
AIC Distribution list discussion thread: Cleaning Gravestones with D/2 Biological Solution Accessed May 2025