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  4. BTEX

Benzene, Toluene, Ethylbenzene and Xylene (BTEX) 

What is BTEX?

BTEX is a term used to describe a group of chemicals including benzene, toluene, ethylbenzene and xylenes. These chemicals are sweet smelling liquids which rapidly volatize in the air. They can be found naturally in crude oil and in the vicinity of natural gas and oil deposits. Historically, they have been used in the manufacture of a wide variety of products.
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BTEX releases to the environment

BTEX chemicals are released to the environment through a variety of man-made sources including: via emissions from motor vehicles and aircraft exhaust, during the production of chemical intermediates and consumer products, and from releases, leaks, and spills from petroleum facilities, pipelines and underground storage tanks.
BTEX chemicals released to the environment can: volatilize into the air, partially dissolve to surface or ground water, or can be bound to soils and sediments. Oil and Gas related activities can contribute to these environmental releases.

Human Health Effects

Occupational exposure to BTEX chemicals can result in adverse health effects such as: skin and respiratory irritation, central nervous system depression, and may cause cancer. The type and severity of the health effect will depend on numerous factors such as: the chemical, the concentration, and the length of exposure. Whenever possible, exposure to BTEX chemicals should be minimized.

Regulatory Concerns for BTEX Compounds

As a result of their nature to elicit adverse human health effects, most governments have established guidelines for exposure to BTEX chemicals to protect public health and the environment. Safe concentrations in air and drinking water have been established. For example, the US EPA has established permissible levels for chemical contaminants in drinking water. The Australian Environmental Protection (Air) Policy specifies guideline values for BTEX chemicals in air.

Due to the growing concern of BTEX releases to the environment and their adverse health effects, many Oil and Gas companies are looking to replace BTEX ingredients in their formulations. CRODA offers a range of products that are BTEX free.

US EPA’s Drinking Water Program can be found here

Australia’s National Environment (Air Toxic) Measure here

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Oil & Gas

As we produce more oil we encounter new and challenging conditions creating a greater requirement for advanced chemical solutions. Globally, our products help our customers obtain more efficient operations, increased flow assurance, process cost benefits and improved environmental profiling.

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