GB/T 25781-2010 English PDFUS$189.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 25781-2010: 1-Naphthylamine Status: Valid
Basic dataStandard ID: GB/T 25781-2010 (GB/T25781-2010)Description (Translated English): 1-Naphthylamine Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: G56 Classification of International Standard: 71.100.01; 87.060.10 Word Count Estimation: 8,826 Date of Issue: 2010-12-23 Date of Implementation: 2011-10-01 Quoted Standard: GB 190; GB/T 191; GB/T 601; GB/T 603; GB/T 2385-2007; GB/T 6678-2003; GB/T 6682; GB/T 8170-2008; GB/T 9722; GB/T 12268-2005; GB 12463; GB 15603; GB 16483; GB 15258 Regulation (derived from): National Standard Approval Announcement 2010 No.10 (Total No.165) Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China Summary: This standard specifies the 1-naphthylamine requirements, sampling, test methods, inspection rules and signs, labels, packaging, transport, storage and security, safety data sheet. This standard for 1-naphthylamine product quality control. GB/T 25781-2010: 1-Naphthylamine---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.1-Naphthylamine ICS 71:100:01; 87:060:10 G56 National Standards of People's Republic of China 1-Naphthylamine Published on:2010-12-23 2011-10-01 Implementation General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China Released by the Standardization Administration of China forewordThis standard is proposed by China Petroleum and Chemical Industry Association: This standard is under the jurisdiction of the National Dyestuff Standardization Technical Committee (SAC/TC134): This standard was drafted by: Jiangsu Huada Chemical Group Co:, Ltd:, Changzhou Chungang Chemical Co:, Ltd:, Shenyang Chemical Research Institute Co:, Ltd: company: The main drafters of this standard: Xu Guanghui, Li Chunmei, Zhou Haojiang, Hu Yadong, Ma Yandong: 1-Naphthylamine1 ScopeThis standard specifies the requirements, sampling, test methods, inspection rules, and marking, labeling, packaging, transportation, storage and safety of 1-naphthylamine: Safety Data Sheet: This standard applies to the product quality control of 1-naphthylamine: Structural formula:2 Normative referencesThe clauses in the following documents become clauses of this standard through reference in this standard: For dated references, all subsequent The amendments (excluding errata content) or revisions do not apply to this standard, however, the parties to the agreement based on this standard are encouraged to study Is the latest version of these files available: For undated references, the latest edition applies to this standard: GB 190 Dangerous Goods Packaging Marks GB/T 191 Graphical Marks for Packaging, Storage and Transportation (GB/T 191-2008, ISO 780:1997, MOD) Preparation of GB/T 601 Standard Titration Solutions for Chemical Reagents Preparation of preparations and products used in GB/T 603 chemical reagent test methods (GB/T 603-2002, neqISO 6353-1: 1982) GB/T 2385-2007 General method for determination of crystallization point of dye intermediates GB/T 6678-2003 General rules for sampling of chemical products GB/T 6682 Analysis Laboratory Water Specifications and Test Methods (GB/T 6682-2008, ISO 3696:1987, MOD) GB/T 8170-2008 Numerical Rounding Rules and Representation and Judgment of Limit Values GB/T 9722 General Rules for Gas Chromatography of Chemical Reagents GB/T 12268-2005 Dangerous Goods List GB 12463 General Specifications for Transport Packaging of Dangerous Goods GB 15258 Regulations for the preparation of chemical safety labels GB 15603 General Rules for the Storage of Commonly Used Chemical Dangerous Goods GB 16483 Regulations for the preparation of chemical safety data sheets (GB 16483-2000, eqvISO 11014-1:1994)3 RequirementsThe quality of 1-naphthylamine should meet the requirements of Table 1:4 samplesSampling is taken in batches, and the production plant takes uniform products as a batch: The number of samples in each batch shall comply with the regulations in 7:6 of GB/T 6678-2003 Certainly: The packaging of the samples to be sampled must be intact, and foreign impurities should not fall into the product during sampling: When sampling, use a probe to take three steps including upper, middle and lower For some samples, the total amount of samples sampled shall not be less than 500g: After fully mixing the collected samples, divide them into two clean, dry and well-sealed containers: In a good light-proof container, stick a label on it: Note: product name, batch number, manufacturer name, sampling date, location: one for inspection, one saved for future reference:5 Test methodsWARNING - Persons using this standard should have practical experience in laboratory work: This standard does not address all safety issues: use It is the responsibility of the operator to take appropriate safety and health measures and to ensure compliance with the conditions stipulated by the relevant national regulations: 5:1 General provisions Unless otherwise specified, the reagents and water used in this standard, unless other requirements are specified, refer to analytical reagents and those specified in GB/T 6682: Specified tertiary water: The standard solutions, preparations and products required in the test, unless other regulations are specified, shall be in accordance with GB/T 601, GB/T 603 Provisions for preparation and calibration: The judgment of the test results shall be carried out according to the rounding value comparison method in 4:3:3 of GB/T 8170-2008: 5:2 Evaluation of appearance Visual assessment was performed under natural light: 5:3 Determination of crystallization point of dry product Take about 50g of sample and 10g of 0:5nm (5Å) molecular sieve in a 125mL wide-mouth bottle, close the stopper tightly, heat the sample to melt, and remove it: Water for 15min (shake the sample bottle several times during the melting process), and the rest shall be carried out according to the provisions of GB/T 2385-2007: 5:4 Determination of 1-naphthylamine content (total amino group value) 5:4:1 Reagents and solutions a) Hydrochloric acid solution: the volume ratio of hydrochloric acid to water is 1:1; b) Potassium bromide solution: 100g/L; c) Sodium nitrite standard titration solution: [c(NaNO2)=0:1mol/L], starch-potassium iodide test paper is used for end point determination; d) Starch-potassium iodide test paper: 5:4:2 Measurement steps Weigh about 0:5g (accurate to 0:0002g) of 1-naphthylamine sample into a 500mL beaker, add 100mL of 90℃ hot water, and stir under stirring: Slowly add 10 mL of hydrochloric acid solution, after the sample is completely dissolved, add 30 mL of hydrochloric acid solution, add water to a total volume of 300 mL, and cool to 0℃~5℃: Add 10 mL of potassium bromide solution, then insert the tip of the burette into the solution, and under constant stirring, drop standard sodium nitrite with sodium nitrite: The titration solution was titrated: During the titration process, the reaction temperature was kept at 0°C to 5°C: Titrate until the starch-potassium iodide test paper presents a slight blue circle, and keeps it unchanged for 5min as the end point: Under the same conditions, make a blank test: 5:4:3 Result calculation The content of 1-naphthylamine (total amino group value) is calculated in w1, the value is expressed in %, and calculated according to formula (1): Calculation results are expressed to two decimal places: 5:4:4 Tolerance The difference between the results of the two parallel determinations should not be greater than 0:3% (mass fraction), and the arithmetic mean is taken as the determination result: 5:5 Determination of 2-naphthylamine content (HPLC) 5:5:1 Method summary The content of 2-naphthylamine was calculated by reversed-phase liquid chromatography and external standard method: 5:5:2 Instruments a) Liquid chromatograph: infusion pump---flow range (0:1~5:0)mL/min, within this range its flow stability is ±1%; Detector---multi-wavelength UV spectroscopic detector or UV spectroscopic detector with equivalent performance; b) Chromatographic column: a stainless steel column with a length of 150 mm and an inner diameter of 4:6 mm, the stationary phase is ODSC18, and the particle size is 5 μm; c) Data processor: chromatography workstation or integrator; d) ultrasonic generator; e) Micro syringe: 25 μL; f) Microbalance: Sensitive amount is 0:01mg: 5:5:3 Reagents and solutions a) Methanol: chromatographically pure; b) Sodium dihydrogen phosphate aqueous solution: 0:6g/L sodium dihydrogen phosphate, adjust pH≈4 with phosphoric acid; c) The mass fraction of 2-naphthylamine standard product is ≥98:0%; d) Water: filtered through 0:45μm water membrane: 5:5:4 Chromatographic analysis conditions a) mobile phase: the volume ratio of methanol and sodium dihydrogen phosphate aqueous solution is 50:50; b) Wavelength: 235nm; c) Flow rate: 1:0mL/min; d) Injection volume: 5μL: The optimal separation conditions can be selected according to different instrument conditions: 5:5:5 Determination steps 5:5:5:1 Preparation of standard solution Weigh 30 mg of 2-naphthylamine standard sample (accurate to 0:01 mg) in a 50 mL volumetric flask, dissolve it with methanol and make up to volume, and place it in an ultrasonic wave The generator is fully dissolved, take out and shake well for use, it is standard solution A: Pipette 2mL of standard solution A into a 50mL volumetric flask, dissolve it with methanol and set the volume, place it in an ultrasonic generator to fully dissolve it, and take it out: Shake well for use as standard solution B: Draw standard solution B according to Table 2 and prepare a series of standard solutions with different concentrations: 5:5:5:2 Preparation of sample solution Weigh 0:15g of 1-naphthylamine sample (accurate to 0:0002g) in a 50mL volumetric flask, dissolve and dilute to the mark with methanol, mix evenly: 5:5:5:3 Determination After the instrument runs stably, use a micro-syringe to draw the appropriate standard solution and sample solution and inject them into the injection valve respectively: After the elution of each component is completed (see chromatogram 1), the results are processed: 5:5:6 Result calculation The content of 2-naphthylamine is calculated in mass fraction w2, the value is expressed in %, and calculated according to formula (2): w2= A1m2w A2m1 (2) where: A1---the peak area value of 2-naphthylamine in the sample solution; m2---the value of the mass of 2-naphthylamine in the standard solution, in grams (g); w---the value of 2-naphthylamine content in the standard solution, in mass fraction (%); A2---the peak area value of 2-naphthylamine in the standard solution; m1---the value of the sample mass, in grams (g): Calculation results are expressed to two decimal places: 5:5:7 Tolerance The difference between the two parallel determination results should not be greater than 0:03% (mass fraction), and the arithmetic mean is taken as the determination result: 5:5:8 Chromatogram The chromatogram is shown in Figure 1:6 Inspection Rules6:1 Inspection classification All items specified in Table 1 of Chapter 3 of this standard are factory inspection items: 6:2 Factory inspection 1-Naphthylamine should be inspected and qualified by the quality inspection department of the manufacturer, and can only leave the factory after the certificate of conformity is attached: The manufacturer shall ensure that all 1-Naphthylamine all meet the requirements of this standard: 6:3 Retest If one of the indicators in the inspection results does not meet the requirements of this standard, it should be re-sampled from twice the amount of packaging for inspection and re-examined: Even if only one index does not meet the requirements of this standard as a result of the inspection, the whole batch of products is unqualified: 7 Marking, Labeling, Packaging, Transport and Storage 7:1 Signs and labels Each package of 1-naphthylamine should be coated with firm and clear toxic signs and Relevant safety storage and transportation signs, and indicate: product name specification, registered trademark, product production license number and logo, net content, manufacturer name Name, factory address, standard number, batch number, production date: The batch number and production date can also be printed on the label, together with the certificate of product quality inspection: together with the outside of the plastic bag in the packaging bucket: And should comply with GB 15258 chemical safety label preparation regulations: 7:2 Packaging 1-Naphthylamine is packaged in woven bags or paper-plastic composite bags lined with black plastic bags, with a net weight of 25kg per bag, other packaging can be negotiated with the user Certainly: Product packaging should comply with GB 12463 and relevant regulations on packaging of hazardous chemicals: 7:3 Transport Storage and transportation should comply with the relevant provisions of GB/T 191, and should be handled with care during transportation to prevent sunlight, collision and rain: 7:4 Storage 1-Naphthylamine is toxic and can burn in the presence of open flames: It should be stored away from sources of ignition and fire, and placed in a cool and dry place: Product storage should be in accordance with GB 15603 and relevant regulations on the storage of hazardous chemicals:8 Safety and safety technical manual8:1 Safety According to GB 12268-2005, 1-naphthylamine belongs to class 6:1 toxic substances, dangerous goods number (UN: 2077; CN: 61830): flammable, subject to Thermal decomposition produces toxic gases: Mainly by the respiratory tract, gastrointestinal tract and skin into the human body and cause poisoning: Bladder swelling in people who have been exposed for a long time tumor: Rat caliber LD50: 779mg/kg: In case of accident, seek medical attention in time: When using and handling, you should wear labor protection equipment: be careful: 8:2 Safety Data Sheet According to the preparation of GB 16483 chemical safety technical instructions, 1-naphthylamine should provide detailed safety technical instructions when leaving the factory: safety technology The instruction manual should include the following: a) provide information on the hazard of the product; b) safe use method; c) Transportation and storage requirements; d) protective measures; e) Emergency treatment measures, etc: ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 25781-2010_English be delivered?Answer: Upon your order, we will start to translate GB/T 25781-2010_English as soon as possible, and keep you informed of the progress. 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