New! Sign up for our free email newsletter.
Reference Terms
from Wikipedia, the free encyclopedia

Haloalkane

A haloalkane, also known as an alkyl halide, is a type of organic compound in which one or more hydrogen atoms in an alkane have been replaced by halogen atoms—such as fluorine, chlorine, bromine, or iodine. These compounds are typically classified based on the number of carbon atoms bonded to the carbon bearing the halogen, resulting in primary, secondary, or tertiary haloalkanes.

Haloalkanes are used in a variety of applications, including as solvents, refrigerants, propellants, and intermediates in chemical synthesis. They are reactive due to the polarized carbon-halogen bond, making them important in substitution and elimination reactions in organic chemistry.

Some haloalkanes, particularly chlorofluorocarbons (CFCs), have raised environmental concerns due to their role in ozone layer depletion. Despite this, haloalkanes remain important industrial chemicals and are widely studied for their reactivity and applications.

Related Stories
 


Earth & Climate News

September 13, 2026

The Indian and Pacific oceans have been climatically linked for centuries, but scientists say that connection is now breaking down in an exceptional way. Ancient climate records suggest volcanoes disrupted the relationship in the past, while today ...
Ancient rocks from Western Australia suggest water was reaching deep inside Earth more than three billion years ago, long before modern plate tectonics may have fully developed. Researchers propose that water-rich pieces of crust periodically sank ...
Britain’s wasps have become mysteriously scarce this summer, and scientists suspect an unusual combination of temperature swings, heatwaves, and food shortages may be responsible. Even the wasps that remain appear unusually small, potentially ...
The Mediterranean may seem far removed from the world’s major tsunami zones, but history and modern modeling show that destructive waves can strike the French Riviera with surprisingly little warning. Some tsunamis could reach shore in under 10 ...
East Antarctica gained an astonishing 695 billion tons of ice between 2021 and 2023, temporarily slowing Antarctica’s long-term decline. Researchers found that warming thousands of miles away in ...
Indonesia’s dangerous peat fires are surging early in the 2026 fire season as a strengthening El Niño and severe drought dry out wetlands that can burn underground for months. These slow smoldering fires are especially destructive because they ...
Puerto Rico’s normally rainy season has instead brought a severe and fast-growing drought. By August 25, three-quarters of the territory was in at least moderate drought, with extreme drought covering 44 percent and some areas receiving less than ...
A giant iceberg measuring more than 76 square kilometers broke from Greenland’s Petermann Glacier in August 2026, marking the Arctic’s largest glacier calving event since 2020. The berg later slammed into Joe Island but survived without breaking ...
Morning glories may be getting caught in an evolutionary tug-of-war between surviving climate change and attracting increasingly scarce pollinators. Over just nine years, researchers found that the plants’ rate of adaptation plunged by 96%, even ...
Elephant Butte Reservoir, New Mexico’s largest reservoir, plunged to just 1.4 percent capacity in July 2026 after years of extreme drought and record early snowmelt. The dramatic decline exposed long-submerged debris and underscored the growing ...
Rare storms covered huge stretches of Chile’s Atacama Desert in snow and dumped extraordinary amounts of rain on one of the driest regions on Earth. The extreme weather shut down observatories, triggered damaging floods and mudflows, and unfolded ...
Hundreds of previously overlooked seismic events have been detected beneath Antarctica, including 245 near the marine edge of the Thwaites Glacier. Many appear to be glacial earthquakes caused when huge icebergs break off, capsize, and collide with ...

Latest Headlines

updated 12:56 pm ET