What question did this study set out to answer?

This research aims to explore the safe handling and study of phosgene, a toxic gas, at a neutron source.

April 24, 2026ACS Chemical Health & Safety0 citationsOpen Access

The Practicalities of Studying Phosgene at a Neutron Source: Safety, Collaboration, and Lessons Learned

SRSven RingelbandPhilipps University of Marburg FTFrank TamborninoPhilipps University of Marburg EBEthan BakerRutherford Appleton Laboratory

Key Points

This research aims to explore the safe handling and study of phosgene, a toxic gas, at a neutron source.
Produced approximately 10 g of phosgene under controlled conditions.
Utilized neutron powder diffraction and neutron vibrational spectroscopy for measurement.
Discussed operational safety and collaboration at ISIS Neutron and Muon Source.
Successfully produced and measured solid-state phosgene safely.
Identified key factors enabling the handling of hazardous materials.
Gathered insights for improving future safety protocols.

Abstract

Phosgene (carbonyl dichloride, COCl2) has a well-deserved reputation as an extremely toxic gas. However, it is widely used in industry, principally for the production of isocyanates, key intermediates in polyurethane manufacture. Comparatively little is known about the solid state of phosgene. This article describes the processes that went into enabling ca. 10 g of phosgene to be safely produced, measured by neutron powder diffraction and neutron vibrational spectroscopy, and appropriately disposed of. The factors that allowed these operations to be carried out at the ISIS Neutron and Muon Source are discussed, and the lessons learned for future work with hazardous materials are described.

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