By Date


  • 9-October-2017

    English

    Test No. 433: Acute Inhalation Toxicity: Fixed Concentration Procedure

    This method provides information on health hazard likely to arise from short-term exposure to a test chemical by inhalation.It is a principle of the method that only moderately toxic concentrations are used so that ‘evident toxicity’, rather than death/moribundity is used as an endpoint, and concentrations that are expected to be lethal are avoided.Groups of animals of a single sex are exposed for a short period of time to the test chemical in a stepwise procedure using the appropriate fixed concentrations for vapours, dusts/mists (aerosols) or gases.  Further groups of animals may be tested at higher concentrations in the absence of signs of evident toxicity or mortality at lower concentrations. This procedure continues until the concentration causing evident toxicity or no more than one death/ moribund animal is identified, or when no effects are seen at the highest concentration or when deaths/ moribundity occur at the lowest concentration.  A total of five animals of one sex will normally be used for each concentration level investigated. The results of this study include: measurements (weighing at least weekly) and daily detailed observations, as well as gross necropsy. The method provides information on the hazardous properties and allows the substance to be classified for acute toxicity according to the Globally Harmonised System of classification and labelling of chemicals. 
  • 9-October-2017

    English

    Test No. 492: Reconstructed human Cornea-like Epithelium (RhCE) test method for identifying chemicals not requiring classification and labelling for eye irritation or serious eye damage

    This Test Guideline describes an in vitro procedure allowing the identification of chemicals (substances and mixtures) not requiring classification and labelling for eye irritation or serious eye damage in accordance with UN GHS. It makes use of reconstructed human cornea-like epithelium (RhCE) which closely mimics the histological, morphological, biochemical and physiological properties of the human corneal epithelium. The test evaluates the ability of a test chemical to induce cytotoxicity in a RhCE tissue construct, as measured by the MTT assay. Coloured chemicals can also be tested by used of an HPLC procedure. RhCE tissue viability following exposure to a test chemical is measured by enzymatic conversion of the vital dye MTT by the viable cells of the tissue into a blue MTT formazan salt that is quantitatively measured after extraction from tissues. The viability of the RhCE tissue is determined in comparison to tissues treated with the negative control substance (% viability), and is then used to predict the eye hazard potential of the test chemical. Chemicals not requiring classification and labelling according to UN GHS are identified as those that do not decrease tissue viability below a defined threshold (i.e., tissue viability > 60%, for UN GHS No Category).
  • 9-October-2017

    English

    Test No. 491: Short Time Exposure In Vitro Test Method for Identifying i) Chemicals Inducing Serious Eye Damage and ii) Chemicals Not Requiring Classification for Eye Irritation or Serious Eye Damage

    This Test Guideline describes a cytotoxicity-based in vitro assay that is performed on a confluent monolayer of Statens Seruminstitut Rabbit Cornea (SIRC) cells, cultured on a 96-well polycarbonate microplate. After five-minute exposure to a test chemical, the cytotoxicity is quantitatively measured as the relative viability of SIRC cells using the MTT assay. Decreased cell viability is used to predict potential adverse effects leading to ocular damage. Cell viability is assessed by the quantitative measurement, after extraction from the cells, of blue formazan salt produced by the living cells by enzymatic conversion of the vital dye MTT, also known as Thiazolyl Blue Tetrazolium Bromide. The obtained cell viability is compared to the solvent control (relative viability) and used to estimate the potential eye hazard of the test chemical. A test chemical is classified as UN GHS Category 1 when both the 5% and 0.05% concentrations result in a cell viability smaller than or equal to (≤) 70%. Conversely, a chemical is predicted as UN GHS No Category when both 5% and 0.05% concentrations result in a cell viability higher than (>) 70%.
  • 9-October-2017

    English

    Test No. 246: Bumblebee, Acute Contact Toxicity Test

    This test guideline is a laboratory test method, designed to assess the acute contact toxicity of pesticides and other chemicals to adult worker bumblebees.Adult worker bumblebees are exposed to the test chemical dissolved in an appropriate carrier, by direct application to the dorsal thorax (droplet). The test duration is at least 48 h. Mortality is recorded daily and compared with control values. Results are analysed in order to calculate the LD50 and NOED, if possible, at 24 h & 48 h and furthermore at 72 h & 96 h in case the study is prolonged.
  • 9-August-2017

    English

    Portal on Per and Poly Fluorinated Chemicals

    Per- and poly-fluorinated alkyl substances (PFASs) are substances that have many manufacturing and industrial applications because they impart useful properties (fire resistance and oil, stain, grease and water repellency). Some of the properties are associated with environmental and human health concerns. To support a global transition towards safer alternatives, this Portal facilitates the exchange of information.

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  • 31-July-2017

    English

    Perfluorooctane Sulfonate (PFOS) and related chemical products

    Hazard Assessment of Perfluorooctane Sulfonate (PFOS) and its Salts for human health and the environment, as a result of its investigation in the OECD Existing Chemicals Programme.

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  • 19-June-2017

    English

    Unique Identifier for Transgenic Plants

    The OECD developed the BioTrack Product Database which accommodates Unique Identifiers to each transgenic (or genetically engineered) plant that is approved for commercial use, including planting and food/feed use. These Unique Identifiers are intended to be used as "keys" to access information of each transgenic product in this database and to ensure the safety of modern biotechnology products

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  • 11-May-2017

    English

    Sustainable Chemistry

    The new OECD report on "Economic Features of Chemical Leasing" is a review of the literature on the economic features of the Chemical Leasing, focusing on the drivers and barriers and comparing its functioning to traditional contracts.

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  • 12-April-2017

    English

    Testing Programme of Manufactured Nanomaterials

    The safety of Manufactured Nanomaterials is an important concern impacting regulatory bodies throughout the world. Due to their size, Manufactured Nanomaterials may require additional testing beyond the standard suite of tests used for other chemicals, to ensure that the impact on human health and the environment is fully understood - download Manufactured Nanomaterials Dossiers or search for Tested Endpoints.

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  • 30-January-2017

    English

    Corporate governance for process safety: Guidance for senior leaders in high hazard industries

    This guidance document for senior leaders in high hazard industries on Corporate Governance for Process Safety is available in 11 languages (now including Czech). It aims to strike a balance between risk and benefit by drawing the attention of those at the top of industry to the need for high standards of corporate governance in relation to the management of high hazard industries.

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