Anhydrous ammonia – used in manufacturing, refrigeration and agriculture – is a pungent, colorless and toxic gas or liquid that, when concentrated, is corrosive to human tissue upon contact, according to NIOSH.

Kansas City, MO — OSHA has launched a Regional Emphasis Program addressing hazards stemming from exposure to fertilizer-grade ammonium nitrate and agricultural anhydrous ammonia.

Working with ammonia requires caution. The flammable, colorless gas has the potential to explode if heated, warns the Canadian Center for Occupational Health and Safety. It’s also extremely toxic.

Washington — Two federal safety agencies are urging owners of certain “nurse” tanks used to transport anhydrous ammonia to check the tanks for potential “catastrophic failure.”

This detector measures ultra-high ammonia concentrations – from 10,000 to 1 million ppm (saturated) – and provides extreme accuracy, excellent repeatability and an operating life measured in decades.

This NH3 long-life ammonia sensor works optimally regardless of how much it has been exposed to ammonia. It’s ideal in environments where ammonia could be present 24/7 – including refrigeration facilities, fertilizer manufacturing and livestock farms.

Ongoing and evolving U.S. Environmental Protection Agency (EPA) and Department of Energy (DOE) regulations have created a complex landscape for supermarket owners.

PATTANI - Local residents were evacuated and schools closed after an ammonia leak at an ice plant sickened 18 people in Muang district of this southern border province on Wednesday.

As the world leaders converge in the UAE for the COP28 this week to chalk out strategies for climate mitigation, Adani Power announced it has taken up a green ammonia combustion pilot project at its Mundra plant.

As colossal container ships traverse oceans delivering cargo, their massive diesel engines emit significant air pollutants that contribute to climate change and pose health risks.

“Sustainability is a critical element for us and we see in this sustainability journey, a lot of opportunities will open up in new sectors,” said Vinayak Pai, MD & CEO, Tata Projects in an interview

Crown ethers simplify the set-up of classic reaction

The new heterometallic complex, aqua-1κO-bis­(μ2-2-imino­methyl-6-meth­oxy­phenolato-1κ2O1,O6:2κ2O1,N)bis­(thio­cyanato-1κN)calcium(II)copper(II), [CaCu(C8H8NO2)2(NCS)2(H2O)], has been synthesized using a one-pot reaction of copper powder, calcium oxide, o-vanillin and ammonium thio­cyanate in methanol under ambient conditions. The Schiff base ligand (C8H9NO2) is generated in situ from the condensation of o-vanillin and ammonia, which is released from the initial NH4SCN. The title compound consists of a discrete binuclear mol­ecule with a {Cu(μ-O)2Ca} core, in which the Cu⋯Ca distance is 3.4275 (6) Å. The coordination geometries of the four-coordinate copper atom in the [CuN2O2] chromophore and the seven-coordinate calcium atom in the [CaO5N2] chromophore can be described as distorted square planar and penta­gonal bipyramidal, respectively. In the crystal, O—H⋯S hydrogen bonds between the coordinating water mol­ecules and thio­cyanate groups form a supra­molecular chain with a zigzag-shaped calcium skeleton.

High levels of ammonia were observed at a Natura 2000 site nearly three kilometres upwind from an intensive poultry farm in a recent study. While downwind effects of ammonia emissions are to be expected, this study suggests that ammonia emissions could be a significant source of nitrogen pollution even upwind from the source.

Levels of particulate matter (PM) in the atmosphere are linked to ammonia emissions. However, reducing ammonia emissions only as far as targets set out by the Gothenburg Protocol will not necessarily ensure compliance with EU PM limits, according to a new study. Greater reductions in ammonia emissions would reduce the number of days when PM limit values are exceeded, the researchers found.

Ammonia released by nitrogen fertilisers in Spanish agriculture could be reduced by up to 82% with only a very minimal impact on crop yield, finds new research. This could be achieved by combining optimised management of manure with the use of non-urea synthetic fertilisers.

A method of removing at least a portion of a silicon oxide material is disclosed. The silicon oxide is removed by exposing a semiconductor structure comprising a substrate and the silicon oxide to an ammonium fluoride chemical treatment and a subsequent plasma treatment, both of which may be effected in the same vacuum chamber of a processing apparatus. The ammonium fluoride chemical treatment converts the silicon oxide to a solid reaction product in a self-limiting reaction, the solid reaction product then being volatilized by the plasma treatment. The plasma treatment includes a plasma having an ion bombardment energy of less than or equal to approximately 20 eV. An ammonium fluoride chemical treatment including an alkylated ammonia derivative and hydrogen fluoride is also disclosed.