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Measuring and Characterizing Tris(2-chloro-1-methylethyl) Phosphate Emission from Open Cell Spray Polyurethane Foam
Mengyan Gong1, Dustin Poppendieck1
1Indoor Air Quality and Ventilation Group, National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, MD 20899-8633, USA.
Indoor Air : Proceedings of the ... International Conference on Indoor Air Quality and Climate. International Conference on Indoor Air Quality and Climate
|July 1, 2021
Summary
This study measures Tris(2-chloro-1-methylethyl) Phosphate (TCPP) emissions from spray polyurethane foam (SPF) insulation to assess indoor air quality. Researchers developed a method to quantify TCPP gas phase concentration and partition coefficient, examining temperature effects.
Area of Science:
- Environmental Chemistry
- Building Science
- Occupational Health
Background:
- Tris(2-chloro-1-methylethyl) Phosphate (TCPP) is a common additive in spray polyurethane foam (SPF) insulation.
- Understanding TCPP emission from SPF is crucial for assessing indoor exposure risks.
- Current data on TCPP partitioning and emission dynamics from SPF materials is limited.
Purpose of the Study:
- To develop a method for determining the gas phase concentration of TCPP in equilibrium with open-cell SPF (y₀).
- To quantify the partition coefficient (K) of TCPP between air and SPF.
- To investigate the influence of temperature on TCPP equilibrium concentration and partition coefficient.
Main Methods:
- Utilized a closed micro-chamber without airflow to test TCPP emission from two types of open-cell SPF.
- Measured steady-state gas phase TCPP concentration (Cequ) within the chamber.
- Determined initial TCPP concentration in SPF (Cm0) via solvent extraction.
Main Results:
- Method development for quantifying TCPP equilibrium concentration (y₀) is complete.
- Measurements of TCPP emission, Cequ, and Cm0 are ongoing.
- Preliminary data on TCPP partitioning and temperature dependence will be presented.
Conclusions:
- The study is establishing a framework for quantifying TCPP emissions from SPF.
- Accurate determination of TCPP partitioning and emission factors is essential for indoor air quality assessments.
- Further results will provide critical data for building material safety and public health.
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