Formaldehyde (CH2O) Articles

  • What is the difference between a REL and a PEL?

    There is often confusion between exposure limits put out by different agencies even within the same administration. For example, here the National Institute for Occupational Safety and Health (NIOSH) establishes Recommended Exposure Limits (RELs) whereas the Occupational Safety and Health Administration (OSHA) issues Permissible Exposure Limits (PELs). Realizing the difference between the two is ...


    By ChemDAQ, Inc.

  • Carcinogens are Cancer Causing Chemicals

    What’s at Stake? A carcinogen is any substance that can cause cancer. They are chronic toxins that cause damage after repeated or long-term exposure. For some people, the workplace can be a source of exposure to some carcinogens, such as asbestos, benzene, or formaldehyde. What’s the Danger? Benzene is a colorless, flammable liquid with a sweet ...


    By SafetySmart

  • Identification of bacteria assimilating formaldehyde in a biological activated carbon filter by means of DNA stable isotope probing and next-generation sequencing

    Ozonation followed by a biological activated carbon (BAC) filter is a common process of advanced water purification. Ozone can generate formaldehyde (FA) as a harmful by-product, while the subsequent BAC filter is efficient at removing FA. FA adsorption is limited on activated carbon because of its hydrophilic property and low molecular weight. Thus, biological degradation by biofilms ...


    By IWA Publishing

  • Preparation and characterization of nanoporous resin for heavy metal removal from aqueous solution

    New nanoporous resin (NPR), based on organic xerogel compounds, was prepared at 150 °C by sol–gel method from pyrogallol and formaldehyde mixtures in water using perchloric acid as catalyst. NPR was characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction and nitrogen porosimetry. The metal uptake characteristics were explored using ...


    By IWA Publishing

  • Formation of aldehyde during ozonation of taste and odour compounds in water

    This study was conducted to investigate ketoaldehydes as another form of taste and odour (T&O) compound generated during the ozonation of commonly known T&O compounds, such as 2-methylisoborneol (MIB) and 2,4,6-trichloroanisole (TCA), which are typical T&O compounds. The ketoaldehydes generated during the ozonation process of T&O were studied. Results revealed that ...


    By IWA Publishing

  • Dangers of Formaldehyde used as adhesive in manufacture of wood-based panel products.

    Formaldehyde is a chemical widely used to manufacture building materials and various household products.  Wood based panels can emit small amounts of formaldehyde to the air and each panel type has a product standard governing the testing and certification of that product for formaldehyde emissions. Anyone involved in the manufacture of these products could be exposed to formaldehyde in ...


    By PPM Technology

  • High concentrations of Aldehydes can be found in the hospital environment

    Both Formaldehyde and Glutaraldehyde are found in the hospital environment at higher concentrations than those to which the general population is exposed. Their possible adverse health effects are therefore very important to those working in certain parts of hospitals and to patients whose health status may be compromised. Both compounds are irritants and can cause sensitisation. Glutaraldehyde ...


    By PPM Technology

  • Monroe scrubber solves pollution and odor problems from a glass resin reactor at a synthetic fiber manufacturing plant

    Monroe scrubber solves pollution and odor problems from a glass resin reactor at a synthetic fiber manufacturing plant Challenge The plant was emitting about 6.0 lbs/hr of toxic fumes from their resin reactor at a temperature of 200oF. The emitted gases to be cleaned were from hazardous, gaseous pollutants such as phenol and formaldehyde, as well as dust particulate. The ...

  • Detect and Monitor Formaldehyde with PPM Technology`s Formaldemeter

    In order to ensure employees and the public are not exposed to dangerous levels of Formaldehyde in the air, it is advised to detect and monitor levels with a suitable detection instrument. PPM Technology has significant experience in the design and development of instruments for accurate detection and measurement of Formaldehyde concentrations in the air. Our Formaldemeter ...


    By PPM Technology

  • Embalmers risk dangerous exposure to Formaldehyde

    Embalmers can be at risk of dangerous exposure to Formaldehyde. ...


    By PPM Technology

  • Prop 65 Puts Acetaldehyde under the Spotlight

    Garden Grove, CA, May 5th, 2011 In 1986, California voters approved an initiative to address increasing concerns about exposure to toxic chemicals. That initiative, the Safe Drinking Water and Toxic Enforcement Act of 1986, is better known by its original name of Proposition 65.  Proposition 65 requires businesses to notify Californians about significant amounts of chemicals in the ...


    By EMSL Analytical, Inc.

  • Biosorption of nickel by Pseudomonas cepacia 120S and Bacillus subtilis 117S

    Biosorption of nickel by two bacterial species: Bacillus subtilis 117S and Pseudomonas cepacia 120S was studied. The maximum uptake of nickel was achieved at 234.4 μg Ni2 +  ml−1 by P. cepacia 120S (living and dead biomass) and at 117.2 and 351.6 μg Ni2 +  ml−1 by living and dead biomass of B. subtilis 117S. The increase in biomass concentration ...


    By IWA Publishing

  • Preconcentration of Cu (II) from seawater using a novel and stable phenol–formaldehyde resin

    Preconcentration of Cu (II) from seawater using a novel phenol–formaldehyde (P–F) resin was investigated. 1,2-dihydroxybenzene-4-azo-3-hydroxybenzene-formaldehyde resin (DAHBF) was prepared by condensing 1,2-dihydroxybenzene-4-azo-3-hydroxybenzene with formaldehyde (1:2 mole ratio) in the presence of oxalic acid as catalyst. Polychelates were obtained when the DAHBF was treated with the aqueous ...


    By IWA Publishing

  • Formaldehyde – a dangerous chemical

    It’s amazing all the places that formaldehyde is found.  It’s best known uses are in insulating material and particleboard.  The most publicized use has been in manufactured homes and mobile homes.  FEMA has been overwhelmed with actions related to exposure to formaldehyde in temporary housing for Hurricane Katrina survivors, and other disasters. There are both short ...


    By Atlantic Environmental, Inc.

  • Determination of formaldehyde content in toys using UV/Vis Spectrometry

    As product safety regulations for industry are becoming stricter, more testing at lower levels is required for toxic elements or hazardous organic chemicals such as formaldehyde in children’s toys/clothing. Formaldehyde resins are used in fabrics to bind pigments to the cloth, as a fire retardant and to provide stiffness. In cotton and cottonblend fabrics they are used to enhance wrinkle ...


    By PerkinElmer, Inc.

  • Toxic formaldehyde very common in homes

    EMSL Analytical provides formaldehyde testing solutions for industry and the public. Formaldehyde can be found in most homes across the country. The chemical is commonly used to manufacture numerous building materials and household items. The most significant source of formaldehyde in most homes is from pressed wood products made with formaldehyde containing adhesives. According to the EPA, “High ...


  • DNA-protein crosslinks induced by formaldehyde and its repair process

    KCL-SDS assay was used to explore DNA-Protein Crosslinks (DPC) effect induced by formaldehyde (FA) and the repair. Gaseous FA could cause DPC at concentrations as 1.0 mg m−3 and 3.0 mg m−3 (p ...


    By Inderscience Publishers

  • German Environmental Survey IV: environmental tobacco smoke exposure of German children

    As the current extent of Environmental Tobacco Smoke (ETS) exposure of children in Germany is unknown, it was investigated in the German Environmental Survey (GerES IV) for Children from 2003 to 2006 using questionnaires and analyses of cotinine in urine and benzene and formaldehyde in indoor air. About half of the 3- to 14-year-old children in Germany live in households with at least one smoker. ...


    By Inderscience Publishers

  • Case study: Formaldehyde production

    Overiew A major chemical manufacturer required a pollution control system with minimal operational cost to destroy the Hazardous Air Pollutant (HAP) by-products of a formaldehyde production process. A key issue was system reliability; the plant operates 24 hours a day and only shuts down once per year for plant-wide preventive maintenance. ...

  • Adi-hybrid pilot study for treating acrylic acid and formaldehyde wastewater

     ABSTRACT This paper summarizes the results of an anaerobic pilot study conducted on-site at the Eastman Chemical Company plant located in Sokolov, Czech Republic. One 800 L ADI-Hybrid pilot reactor was operated for 15 months from February 19, 2003 to May 23, 2004, treating selected petrochemical wastewater generated from the two Acrylic Monomers Plants (acrylic acid plants) on site. ...

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