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Date of issue: October 2015
Version: 1.1

This is a UKTIS monograph for use by health care professionals. For case-specific advice please contact UKTIS on 0344 892 0909. To report an exposure please download and complete a pregnancy reporting form. Please encourage all women to complete an online reporting form.


Chloropicrin is used as a broad spectrum fumigant pesticide for pre-plant soil, structural, and enclosed space fumigation.  It is also combined with odourless pesticides to serve as a noisome indicator for potentially hazardous odourless fumes.  Under normal atmospheric conditions, chloropicrin is a volatile, colourless to faint yellow oily liquid, with an extremely irritating and penetrating smell that induces lacrimation.  Exposure is primarily through inhalation, but may also occur through ingestion and dermal or ocular contact.

There are currently no available human data which detail pregnancy outcomes following gestational exposure to chloropicrin and it is therefore not possible to provide an evidence-based assessment of fetal risk. 

Following chloropicrin exposure in a pregnant patient, maternal toxicity is likely to be a major determinant of risk to the fetus.  There are no guidelines regarding the treatment of chloropicrin poisoning during pregnancy.  Where required, treatment should be the same as for the non-pregnant patient.

Where exposure to chloropicrin has occurred, even in cases which did not result in maternal toxicity, enhanced fetal monitoring may be warranted as adverse outcomes have been observed in animal studies.  Discussion with UKTIS is recommended for all cases.

This document is regularly reviewed and updated. Only use full UKTIS monographs downloaded directly from to be sure you are using the most up-to-date version. The summaries of these monographs are openly available on

This is a summary of the full UKTIS monograph for health care professionals and should not be used in isolation. The full UKTIS monograph and access to any hyperlinked related documents is available to health care professionals at

If you have a patient with exposure to a drug or chemical and require assistance in making a patient-specific risk assessment, please telephone UKTIS on 0344 892 0909 to discuss the case with a teratology specialist.

If you would like to report a pregnancy to UKTIS please click here to download our pregnancy reporting form. Please encourage all women to complete an online reporting form.

Disclaimer: Every effort has been made to ensure that this monograph was accurate and up-to-date at the time of writing, however it cannot cover every eventuality and the information providers cannot be held responsible for any adverse outcomes of the measures recommended. The final decision regarding which treatment is used for an individual patient remains the clinical responsibility of the prescriber. This material may be freely reproduced for education and not for profit purposes within the UK National Health Service, however no linking to this website or reproduction by or for commercial organisations is permitted without the express written permission of this service. This document is regularly reviewed and updated. Only use UKTIS monographs downloaded directly from or to ensure you are using the most up-to-date version.