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Biosurfactant is a metabolite produced by microorganisms under certain conditions, which not only has the general properties of surfactants such as solubilization, emulsification, wetting, foaming, dispersion, and surface tension reduction, but also has the characteristics of low toxicity or non-toxicity, easy biodegradation, and environmental friendliness [1]. At present, it has been partially used to replace chemically synthesized surfactants in the fields of petroleum exploitation, medicine, food, cosmetics, and environmental protection [2-4].Sophora glycolipid is a widely studied biosurfactant, and its basic structure is saturated or unsaturated fatty acids with carbon chains of different lengths connected to the sophora sugar bond, which are generally divided into lactone type and free acid type [5].
The factors limiting the widespread application of locust glycolipid biosurfactants are high. At present, the research work on sophora glycolipids mainly focuses on the selection of low-cost production raw materials and the improvement of yield [6-8].Studies have shown that Candida bombicola can use a variety of water-soluble and non-water-soluble substrates as carbon sources to secrete locust glycolipid biosurfactants in extracellular, including glucose, whey protein, etc., and soybean oil, sunflower oil, olive oil, etc. [9].
Recent studies have shown that both water-soluble and non-water-soluble.
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No, you don't. Hope it helps!
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Hello, all those that are not included in the list of existing chemical substances must be declared.
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2) Responsible for the whole process of new chemical substance registration process and the formulation of declaration plan;
3) Select and arrange laboratories, formulate test plans, review test plans and test reports;
4) Responsible for establishing and maintaining good working contacts with relevant registration institutions, laboratories and industries;
5) Responsible for drafting the publicity draft of the new substance registration department and updating the content in a timely manner;
6) Responsible for internal training and coordination, assist other registration departments of the company, put forward reasonable suggestions for formulating and arranging test plans, and help select and contact laboratories;
7) Complete other tasks assigned by the company's leaders.
2. Job requirements:
1) Bachelor degree or above in toxicology, medicine, chemical engineering, safety, environment and other related majors;
2) More than 2 years working experience in environmental protection or chemicals, new chemical substances, etc.;
3) Have good English listening, speaking, reading and writing skills, be able to read English independently, translate materials, and be proficient in various office software;
4) Familiar with the relevant laws and regulations for the registration of new chemical substances and the relevant procedures for the preparation of registration materials;
5) Should have sufficient expertise in the relevant professional field such as chemicals or laboratory procedures;
6) Strong word processing skills, excellent communication skills and teamwork skills;
7) Experience in new chemical substance registration is preferred.
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2) Responsible for the whole process of new chemical substance registration process and the formulation of declaration plan;
3) Select and arrange laboratories, formulate test plans, review test plans and test reports;
4) Responsible for establishing and maintaining good working contacts with relevant registration institutions, laboratories and industries;
5) Responsible for drafting the publicity draft of the new substance registration department and updating the content in a timely manner;
6) Responsible for internal training and coordination, assist other registration departments of the company, put forward reasonable suggestions for formulating and arranging test plans, and help select and contact laboratories;
7) Complete other tasks assigned by the company's leaders.
2. Job requirements:
1) Bachelor degree or above in toxicology, medicine, chemical engineering, safety, environment and other related majors;
2) More than 2 years working experience in environmental protection or chemicals, new chemical substances, etc.;
3) Have good English listening, speaking, reading and writing skills, be able to read English independently, translate materials, and be proficient in various office software;
4) Familiar with the relevant laws and regulations for the registration of new chemical substances and the relevant procedures for the preparation of registration materials;
5) Should have sufficient expertise in the relevant professional field such as chemicals or laboratory procedures;
6) Strong word processing skills, excellent communication skills and teamwork skills;
7) Experience in new chemical substance registration is preferred.
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Hello new chemical substances are to be tested, hazard assessment.
HJT 153-2004 Guidelines for Chemical Testing. pdf》
GBT 24777-2009 Safety Requirements for Laboratories Testing Chemicals and Their Hazard Testing. pdf》
GB-T 21848-2008 Chemicals for industrial use **Determination of hazards. pdf》
GB-T 22233-2008 Standard terminology related to the potential hazards of chemicals. pdf》
GBT 22225-2008 General Principles for Risk Assessment of Chemicals. pdf》
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Hello, the declaration of new chemical substances is based on the requirements of the No. 7 Order of the Ministry of Environmental Protection in October 2010 "Measures for the Environmental Management of New Chemical Substances", and all chemical substances that are not in the "List of Existing Chemical Substances in China" IECSC are new chemical substances and are included in the declaration. At present, IECSC only includes more than 45,000 substances, while the US TSCA includes more than 81,000 substances, and the European Union EINECs includes more than 100,000 substances. You can do an online search for your company's substances at the Ministry of Environmental Protection's CRC**, but the safest way is to entrust the chemical registration center to conduct a manual search to determine which chemical substances are new before making a declaration.
The declaration is divided into three categories, conventional declaration, simple declaration, and scientific research filing declaration. If you encounter any problems in the declaration process, you can add me msn, and we will communicate together, our company has successfully declared and has experience in this area.
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There are rhamnolipids, locust glycolipids, trehalose lipids, etc.
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At present, there are many types, and ** is decreasing.
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Biosurfactants are products produced by microbial fermentation, and the main raw materials are naturally degradable (such as vegetable oil), and then purified by physical extraction process.
Chemical surfactants are made by chemical synthesis.
In addition to the difference in raw materials and production processes, chemical surfactants can produce the desired structure according to needs, and the purity will be very high. Biosurfactants, on the other hand, are generally mixed structures and can only be produced in large categories. Each has its own strengths in performance, and there are varieties with good surface properties.
In terms of environmental protection, biosurfactants are much better, with low ecotoxicity and 100% degradability. **Advantages on chemical surfactants. There are relatively few biosurfactants in the category selection, and at present, there are only locust glycolipids and rhamnolipids in industrial products, while there are more chemical surfactants.
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The declaration of new chemical substances is a requirement of the Ministry of Environmental Protection of China's Order No. 7 - "Environmental Management Measures for New Chemical Substances", which was officially implemented in October 2010. Before a new chemical substance is produced or imported, it must be declared and a registration certificate must be obtained.
Declared substances: substances not included in the IECSC List of Existing Chemical Substances in China;
Types of declarations: routine declaration, simple declaration, and scientific research filing declaration.
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Materials Required:
1.A copy of the application form for exemption from the declaration of new chemical substances;
2.A copy of the certificate of exemption from declaration;
3.Exemption from the electronic filing of the application form and supporting documents.
Procedures:1For material acceptance, the Chemical Registration Center of the State Environmental Protection Administration shall accept the exemption materials provided by the applicant in accordance with Order No. 17 of the State Environmental Protection Administration, and conduct a preliminary examination
2.Material summary, the State Environmental Protection Administration Chemical Registration Center will be the preliminary review of the materials after the summary, submitted to the State Environmental Protection Administration;
3.The State Environmental Protection Administration shall review the application materials in accordance with the relevant regulations, and notify the results of the exemption from the declaration procedures after approval and approval
4.If the opinion is approved, the State Environmental Protection Administration will notify the registration center of the final review opinion, and the registration center will notify the applicant.
Processing time: 30 working days.
Charging standard: according to Article 28 of Order No. 17 of the General Administration (Note: Article 28 of Order No. 17 stipulates that the fees for the declaration and registration of new chemical substances shall be implemented in accordance with the relevant national regulations, and there is no relevant national regulations and no fees for the time being).
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According to the Measures for the Environmental Management of New Chemical Substances, if a substance is not listed in the IECSC list, it is considered a new chemical substance in China and needs to be declared to the Ministry of Environmental Protection.