Eco-toxicology Assessment Of New Chemicals And Analysis Of Libang Paint

Since the 20th century, with the rapid development of the industrial revolution the social development, when people benefit from the development they are also facing and suffering from environmental pollution and ecological damage hazards. Toxic and harmful chemicals have become an important global environmental problem, which has aroused world's attention in the industry especially its ecological impact and human health. Therefore, the toxic chemicals of ecological toxicology assessment, especially for new chemical substances ecotoxicological assessment and monitoring have become a hot topic in the academic circles at home and abroad.To prevent environmental pollution, protect human health and the ecological environment, on September 12, 2003 the "new chemical substances of environmental management approach" by the State Environmental Protection Administration of China promulgated and on October 15, 2003 started the implementation of the new chemical Material production or import declaration before the registration system. In order to implement the "new chemical substances of environmental management approach", and regulate the new chemical hazard assessment, on April 13, 2004the State Environmental Protection Administration and was approved on June 1, 2004 since the implementation of the "new chemical substances hazard assessment, which indicates that the field of chemicals management has entered a new era. But compared to developed countries, there is a lot of work to improve and perfect for the new chemicals management.Based on studying, mastering and collecting the relevant information on new chemicals at home and abroad, the State Environmental Protection Administration promulgated the "new chemical substances of environmental management approach", and April 13, 2004 "issued by the new chemical hazard assessment Guide ", the discussion focused on new chemical toxicology assessment of ecological significance. At the same time take Libang paint on the market as a new chemical substances, to further understand and grasp the "new chemical substances of environmental management approach" content and "new chemical risk assessment guidelines" related to the assessment process and the process of standardizing operation.The main chemical components of Li Bang paint are: titanium dioxide, styrene, butyl acrylate and methyl acrylate, methyl methacrylate and so on. Above all the major chemical constituents of the physical and chemical properties and toxicological information on the basis of "new chemical risk assessment guidelines" to draw the following conclusions:1. Although TiO₂ in the new chemical substances has the most proportion except water, but in accordance with the new chemical hazard assessment guidelines for the assessment results for the non-toxic.2. Styrene: In accordance with the new chemical hazard assessment guidelines are "virtually non-toxic." Enquiry provocative: a severe stimulation. A gas pollution category. In the first level of reserves to add in the trial. Styrene flammable so it should be paid attention.3. Butyl acrylate: In accordance with the new chemical hazard assessment guidelines, are "virtually non-toxic." Enquiry irritation: mildly stimulating. Reproductive toxicity: poisoning rats inhaled the lowest concentration (TCL0): 135mg / L (6 hours) (6 to 15 days of pregnancy), the mortality rate increased after implantation. In the first level of reserves to add in the trial. In addition flammable butyl acrylate, the case of fire, heat or contact with oxidants, burning caused the explosion risk. It should be paid attention.4. methyl methacrylate:, in accordance with the new chemical substances assessment guidelines are "virtually non-toxic." Enquiry for the weak stimulus. In the first level of unnecessary additional tests of biological reserves. It has an impact on the musculoskeletal system.5. Methacrylate: in accordance with the new chemical hazard assessment guidelines are "virtually non-toxic." Sub-acute and chronic toxicity: a nose eye irritation, weight loss, blood and urine tests normal, normal anatomy of offal. Mutagenicity: None. DNA damage: None. Hazardous characteristics: event of fire, burning high heat caused the explosion. may occur polymerization, a large number of heat, rupture and cause the explosion of containers. Therefore, environmental exposures should also be pre-assessment6. Mutagenic and reproductive toxicity: Although the guidelines of the eco-toxicology assessment of the current standards but also did not assess these major components of the human health risk assessment should be improved and perfected in the future management of the new chemical substances. In the new chemical hazard assessment guidelines for toxicology assessment of reproductive toxicity and future generations of reproductive toxicity test" to assess the results of this study not only in the non-Li Bang paint the results of these methods; caused toxicity assessment requirements by mammalian cells in vitro Abnormal chromosome-test structure, it is difficult to check the relevant data. Therefore, assessment of toxicology and ecotoxicology assessment of the standards should be further detailed in order to facilitate the management of the new chemical substances.