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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
  • Fluoride Analysis in Acid Baths
    The following procedure is provided as a general method for determining fluoride levels in chromic, nitric, hypochloric, perchloric, and other strong acids. The major requirement for sample preparation is sodium acetate or sodium citrate be added to free the fluoride ion and adjust both pH
  • 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).
  • Industrial Processing - Pickling Tanks For Stainless Steel
    Nitric acid is used to pickle stainless steel products to remove impurities and form a new surface layer on the material. To demonstrate compliance with environmental regulations, emissions of nitric oxide and nitrogen dioxide (collectively referred to as NOx) may be required to be monitored
  • 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
  • ACID SEPARATION FOR IMPURITY CONTROL AND ACID RECYCLE USING SHORT BED ION EXCHANGE
    , 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
  • 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

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