Single Component Polyurethane Sealant

A Common Product profile (CP) is a type of data record originally developed as part of a collaboration called the Quartz Project. The profiles are not specific to any manufacturer, but list the substances that are most commonly present in a product type. The CPs include a general description of the product type, a list of the most common substances serving each function in the product, and the health hazards associated with these substances. See the CP methodology here for more information.

This CP presents research done by Healthy Building Network alone following the completion of the Quartz effort.

Representative Manufacturers



Single component polyurethane sealants are primarily made of a polyurethane prepolymer, filler, plasticizer and solvent. Additional additives including moisture scavengers, catalysts and adhesion promotors are commonly included in these formulations. The sealants covered in this CP are moisture-cured, so the prepolymers crosslink after application in the presence of moisture. These smooth, non-sag, low modulus elastomeric sealants can be used in interior or exterior joint sealing applications such as expansion and control joints, siding gaps, gaps around perimeters of doors and windows, and other wall penetrations. They are typically paintable and meet ASTM C920 Type S, Grade NS with a minimum joint movement capability of +/-25%.

This information reflects our best understanding of product composition in 2016.


CA EPA - Prop 65 - Carcinogen from Ethylbenzene

CA EPA - Prop 65 - Developmental toxicity from DIISODECYL PHTHALATE (DIDP) (alternate CASRN is 68515-49-1)

EU - GHS (H-Statements) - H360FD - May damage fertility. May damage the unborn child from Dibutyltin dilaurate

EC - CEPA DSL - Persistent from Ethylbenzene

ChemSec - SIN List - Endocrine Disruption from Butylated hydroxytoluene

EU - GHS (H-Statements) - H341 - Suspected of causing genetic defects from Dibutyltin dilaurate

MAK - Sensitizing Substance Sa - Danger of airway sensitization from 2,6-TOLUENE DIISOCYANATE (2,6 TDI)

EU - GHS (H-Statements) - H330 - Fatal if inhaled from 2,6-TOLUENE DIISOCYANATE (2,6 TDI)

MAK - Sensitizing Substance Sh - Danger of skin sensitization from CHROMIUM (III) COMPOUNDS

EU - GHS (H-Statements) - H372 - Causes damage to organs through prolonged or repeated exposure from Dibutyltin dilaurate

GHS - Japan - Hazardous to the aquatic environment (acute) - Category 1 [H400] from Butylated hydroxytoluene

GHS - New Zealand - 9.3A - Very ecotoxic to terrestrial vertebrates from Dibutyltin dilaurate

EU - GHS (H-Statements) - H225 - Highly flammable liquid and vapour from Ethylbenzene

See the Pharos record HERE for more details and the sources used to create this Common Product profile.

Last updated: April 02, 2019