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  • Zirconium in Nitric Acid Applications (.pdf)
    Nitric acid is one of the most widely used acids in the Chemical Processing Industry. It is a key raw material in the production of ammonium nitrate for fertilizer, and is also utilized in a variety of manufacturing processes, including the production of industrial explosives, dyes ,plastics
  • Central Air Abatement System (CAAS) Scrubbing in Semiconductor Manufacturing (.pdf)
    A number of sources in the semiconductor manufacturing process produce diluted levels of acid gases, silanes, ammonia and some organics. The most common gases are hydrochloric acid (HCl), hydrofluoric acid (HF), hydrobromic acid (HBr), phosphoric acid (H3PO4), nitric acid (HNO3) and ammonia (NH3).
  • Influence of Plastic Deformation on The Integrity and Corrosion Resistance of Tantaline Surface Treatment (.pdf)
    Material Selection Resources Inc has been involved in selecting materials for valves and pumps in very harsh environments for its clients. Many of the applications require good corrosion resistance in acids such as nitric acid and hydrochloric at high concentrations and elevated temperatures.
  • Determining Whether a Ring is Carbon or Stainless Steel
    SAE 1060-1090 Carbon Steel and PH 15-7 MO Stainless react differently to nitric acid. A drop of nitric acid placed on carbon steel will cause the steel to become dark in color. When placed on stainless, the material will not change in color. Holding a portion of the ring against a grinding wheel
    , nitric, and hydrofluoric. In the case of hydrochloric acid, the process can. selectively separate chloro-anionic complexes such as Zn, Pb, and Cu, which are then eluted with. water. The acid recovery technology can also be closely coupled with ion exchange processes in. order to minimize
  • Online Gas Analysis in Ammonia Plants
    Ammonia is used in the production of a variety of products including fertilizer, nitric acid, nylon, pharmaceuticals, and refrigerant. Production of ammonia (NH3) is a two step process. The first step is to produce hydrogen(H2) by reacting natural gas or methane (CH4) with steam in a reformer
  • Mercury Chemical Stability
    The stability of mercury-containing solutions has been a topic of concern for all trace analysts performing Hg determinations. Our in-house stability studies have yielded the following conclusions. Hg is stable in glass (only borosilicate glass studied) in 5% nitric acid at room temperature at all
  • Cleanliness Assessment of Medical Devices
    was related to a combination of residual oil on the implant and the removal of a nitric acid passivation step during manufacturing. CPG helped the manufacturer validate the replacement manufacturing process for this product.

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