Bis(2-ethylhexyl) phthalate (DEHP)
Summary
What it is
Common uses
Public Perception
Anxiety level
Cultural claims
Source sentiment
History
Timeline
Origin
Science
Key findings
Studies
Safety status
Nuance
Alternatives
Swaps
Avoidance tips
References

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Bis(2-ethylhexyl) phthalate (DEHP)

ingredientPlasticizers

Total Sources: 40

Verified Claims: 44

Scientific Sources: 18

Also known as: DEHP

Summary

Bis(2-ethylhexyl) phthalate (DEHP) is a phthalate ester primarily used as a plasticizer to enhance the flexibility, durability, and transparency of plastics, especially polyvinyl chloride (PVC) [1], [28]. However, concerns regarding its potential health risks have led to restrictions in its use in many products [3], [28].

What it is

DEHP is a synthetic chemical belonging to the phthalate family, known for its plasticizing properties [14], [28]. It is a colorless liquid at room temperature [15].

Common uses

  • Plasticizer in PVC products such as cables, flooring, and roofing [4]

  • Medical devices like blood bags and tubing [4]

  • Food packaging [6]

  • Cosmetics and personal care products [6]

Public Perception

Anxiety level

High. There is significant anxiety due to the ubiquitous nature of DEHP, its potential health effects, and the difficulty in avoiding exposure [19], [21], [27].

Cultural claims

  • Exposure to phthalates is nearly universal in the United States [19], [22].

  • Some medical practitioners warn patients, especially pregnant women, about the risks of phthalates [19].

Source sentiment

News sources express concern over the health risks associated with DEHP, particularly for pregnant women and children, while also noting the chemical's widespread presence in everyday products [19], [21], [27].

History

Timeline

1950

DEHP patented and first used as vacuum pump oil [29].

1981

IARC Working Group evaluates DEHP [12].

1987

IARC re-evaluates DEHP [12].

2000

IARC re-evaluates DEHP [12].

2012

FDA issues guidance to limit the use of certain phthalates, including DEHP, in CDER-regulated products [14].

2016

European Commission allows companies to use recycled plastics containing DEHP, sparking controversy [20].

2017

Consumer Product Safety Commission bans the use of eight phthalates in toys and children's products [39].

2019

EFSA updates risk assessment of DEHP for use in food contact materials [2].

2021

EU Regulation No. 2021/2045 extends the scope of DEHP uses prohibited by REACH Annex XIV [30].

2023

European Commission postpones the ban on DEHP in medical devices to July 1, 2030 [30].

2024

EPA releases draft technical support documents for the risk evaluation for DEHP [15].

Origin

DEHP was initially patented for use as vacuum pump oil [29].

First appeared: 1950

Science

Key findings

  • DEHP exposure is linked to reproductive and developmental toxicity in laboratory animals [2], [3], [63].

  • DEHP may act as an endocrine disruptor, interfering with hormone function [6], [19], [20].

  • Prenatal exposure to phthalates, including DEHP, is associated with pregnancy complications and neurodevelopmental disorders [6], [21].

  • DEHP has been found to leach from medical supplies, leading to potential patient exposure [4].

  • Long-term exposure to DEHP may disrupt neural homeostasis and affect emotional and cognitive functions [10].

Studies

Leaching of Phthalates from Medical Supplies and Their Implications for Exposure

DEHP was the major phthalate found in 99% of analyzed medical product samples, with the highest amount leached from respiratory support devices. The highest DEHP exposure dose was determined from the use of cannula for neonates [4].

A systematic review on the adverse health effects of di-2-ethylhexyl phthalate

Exposure to DEHP mainly targeted the reproductive, neurodevelopment, and respiratory systems in experimental studies. Human studies reported carcinogenic effects [5].

Effect of prenatal phthalate exposure on fetal development

Prenatal exposure to phthalates is associated with pregnancy complications and fetal neurodevelopmental disorders. DEHP and its metabolites are the main compounds associated with these issues [6].

Long-term exposure changes the environmentally relevant bis(2-ethylhexyl) phthalate to be a neuro-hazardous substance disrupting neural homeostasis in emotional and cognitive functions

Long-term DEHP ingestion induced depressive behaviors and reduced learning and memory function in mice, along with increased biomarkers related to chronic stress [10].

Update of the risk assessment of di‐butylphthalate (DBP), butyl‐benzyl‐phthalate (BBP), bis(2‐ethylhexyl)phthalate (DEHP), di‐isononylphthalate (DINP) and di‐isodecylphthalate (DIDP) for use in food contact materials

Based on a plausible common mechanism (i.e. reduction in fetal testosterone) underlying the reproductive effects of DEHP, DBP and BBP, the Panel considered it appropriate to establish a group‐TDI for these phthalates, taking DEHP as index compound as a basis for introducing relative potency factors [2].

Safety status

Limited. DEHP is classified as a possible human carcinogen and reproductive/developmental toxicant, leading to restricted use in many applications [16], [28], [30].

Nuance

While some studies suggest potential harm, establishing definitive cause-and-effect relationships in humans is challenging due to widespread exposure and the presence of multiple chemicals [14], [22].

Alternatives

DINP (Diisononyl Phthalate) and DIDP (Diisodecyl Phthalate)

These high molecular weight phthalates are sometimes used as alternatives to DEHP, though they also have potential health concerns [2], [6].

Non-phthalate plasticizers

Alternatives like citrate esters, adipates, and bio-based plasticizers can replace phthalates in various applications, offering potentially safer options [28], [30].

Avoidance tips

  • Choose fresh, minimally processed foods to reduce exposure from packaging [34].

  • Avoid heating food in plastic containers, especially in the microwave [19], [34].

  • Opt for glass or stainless steel food storage containers [34].

  • Select personal care products labeled as "phthalate-free" [21], [33].

  • Limit consumption of fast foods, which may have higher phthalate levels [34].

  • Be cautious of products made from PVC, especially flexible items like vinyl flooring and shower curtains [4], [33].

References

1.

https://www.epa.gov/system/files/documents/2025-06/28.-draft-revised-cumulative-risk-analysis-.-public-release-.-hero-.-may-2025.pdf