GB/T 210.2-2004 PDF EnglishUS$90.00 · In stock · Download in 9 seconds
GB/T 210.2-2004: Specification and determination methods of sodium carbonate for industrial use -- Part 2: Specification and determination methods Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Obsolete
Similar standardsGB/T 210.2-2004: Specification and determination methods of sodium carbonate for industrial use -- Part 2: Specification and determination methods---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT210.2-2004 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 71.060.40 G 11 Replacing GB 210-1992 Specification and determination methods of sodium carbonate for industrial use - Part 2.Specification and determination methods Issued on. MARCH 15, 2004 Implemented on. OCTOBER 1, 2004 Issued by. General Administration of Quality Supervision, Inspection and Quarantine of the People’s Republic of China; Standardization Administration of the People’s Republic of China. Table of ContentsForeword... 3 1 Scope... 5 2 Normative references... 5 3 Test methods... 6 Appendix A (Informative) Technical differences between this Part and BS 6070.1981 and the corresponding causes... 23 Appendix B (Informative) Contrast of the section numbers of this Part and BS 6070.1981... 25ForewordThis national standard Specification and determination methods of sodium carbonate for industrial use is divided into two parts. — Part 1.Sodium carbonate for industrial use; — Part 2.Specification and determination methods. This Part is Part 2 of the Specification and determination methods of sodium carbonate for industrial use. This Part modifies and adopts the British Standard BS 6070.1981 Methods of test for sodium carbonate for industrial use (EN); and it is redrafted according to the British Standard BS 6070.1981 Methods of test for sodium carbonate for industrial use. Taking China’s national situation into consideration, this Part makes some modifications when using the British Standard. The relevant technical differences have been compiled into the text, and have been indicated via the vertical single lines drawn in the margin positions of their involved clauses. The list of these technical and structural differences and corresponding reasons have been given in Appendixes A and B for reference. This Part replaces the national standard GB 210-1992 Sodium carbonate for industrial use along with GB 210.1. Compared with GB 210-1992, the technical changes of this Part are as follows. — LIST the method for determining water insoluble substances by using a Gooch crucible covered with asbestos paper in parallel. USE the method for determining water insoluble substances by using a Gooch crucible covered with acid-washed asbestos for arbitration. The Appendixes A and B of this Part are informative appendixes. This Part was proposed by the original State Bureau of Petroleum and Chemical Industries. This Part shall be under the jurisdiction of the Subcommittee of Inorganic Chemical Industry of the National Technical Committee for Standardization of Chemistry (SAC/TC 63/SC1). Drafting organizations of this Part. Tianjin Chemical Research & Design Institute, Tianjin Soda Plant (now known as Tianjin Bohua Yongli Chemical Industry Co., Ltd), Dahua Group Co., Ltd, Hangzhou Longshan Chemical Co., Ltd, Soda Ash Plant of Shandong Haihua Group Co., Ltd, Sonid Branch of Inner Mongolia Mengxilian Co., Ltd, Hubei Shuanghuan Chemical Industry Group Co., Ltd, Sichuan Zigong Honghe Chemical Industry Co., Ltd, Qingdao Soda Ash Industrial Co., Ltd, Tangshan Sanyou Group Co., Ltd, and Xinjiang Hami Shuanghe Soda Ash Industrial Co., Ltd. Main drafters of this Part. Yao Jinjuan, Liu Youruo, Wu Hongfa, Jiang Mi, Wang Wenqiong, Sun Shuxiang, Ma Wenyuan, Bao Nianhan, Yao Zuying, Li Chaoguo, Sun Changjiang and Zha Anli. This Part was first-time released in 1963, and was respectively revised in 1980, 1989 and 1992. Specification and determination methods of sodium carbonate for industrial use - Part 2.Specification and determination methods1 ScopeThis Standard specifies the specification and determination methods of sodium carbonate for industrial use. This Standard is applicable to the sodium carbonate for industrial use produced by using industrial salt or trona as raw material through Solvay process, Hou’s process for soda manufacture or other methods. This product is mainly used in the following industries. chemical industry, glass, metallurgy, papermaking, printing and dyeing, synthetic detergents, petrochemical industry, etc. Molecular formula. Na2CO3 Relative molecular mass. 105.99 (according to the international relative atomic mass in 1999)2 Normative referencesThe provisions in the following documents become the provisions of this Standard through reference in this Standard. For dated references, the subsequent amendments (excluding corrections) or revisions do not apply to this Standard. However, parties who reach an agreement based on this Standard are encouraged to study if the latest editions of these documents are applicable. For undated references, the latest editions apply to this Standard. GB/T 3049-1986 Chemical products for industrial use - General method for determination of iron content - o-Phenanthroline spectrophotometric method (neq ISO 6685.1982) GB/T 3050-2000 Inorganic chemical products for industrial use - General method for determination of chloride content - Potentiometric method GB/T 3051-2000 Inorganic chemical products for industrial use - General method for determination of chloride content - Mercurimetric method GB/T 6682-1992 Water for analytical laboratory use - Specification and test methods (neq ISO 3696.1987)3 Test methods3.1 Safety tips Some of the reagents used in this test method are toxic or corrosive. Be cautious during operations! If splashing on the skin, FLUSH immediately. In severe cases, TREAT immediately. 3.2 General provisions In the absence of other requirements specified, the reagents and water used in this Standard refer to analytical reagents and Level III water specified in GB/T 6682-1992 3.3 Determination of total alkali content 3.3.1 Method summary USE bromocresol green-methyl red mixture as indicator. USE standard hydrochloric acid volumetric solution for the titration of total alkali content. 3.3.2 Reagents 3.3.3 Analysis procedures 3.4 Determination of chloride content 3.4.1 Mercurimetric method 3.4.1.1 Method summary Same as the method in the Chapter 2 of GB/T 3051-2000. 3.4.1.2 Reagents 3.4.1.3 Instrument 3.4.1.3.1 Burette. The division value is 0.02mL or 0.05mL. 3.4.1.4 Analysis procedures 3.4.2.3 Instruments 3.4.2.3.1 Potentiometer. The accuracy shall not be lower than 10 mV/cell. The range shall be (-500 ~ +500) mV. 3.4.2.3.2 Reference electrode. double liquid junction saturated calomel electrode, filled with saturated potassium chloride solution. During titration, the saturated potassium nitrate solution filled in the outer casing shall be connected with the calomel electrode. 3.4.2.3.3 Measuring electrode. silver electrode or silver electrode with silver sulfide coating (For the preparation method, SEE the Appendix A of GB/T 3050- 2000). 3.4.2.3.4 Burette. The division value is 0.02mL or 0.05mL. 3.4.2.4 Analysis procedures WEIGH appropriate quantity of test samples (2g of Type I, 1g of Type II). ACCURATE to 0.01g. PLACE the test samples in a 100mL beaker. ADD 40mL of water for dissolution. MAKE the following operations according to the provisions in the Section (3.4.2.2.2). START from “PUT in electromagnetic stirrers” to “NOTE down a potential value E again after the endpoint”. However, do NOT add 4.00mL of standard silver nitrate volumetric solution at a time first. In the meantime, CONDUCT the blank test. 3.4.2.5 Result calculation The chloride content shall be counted as the mass fraction of sodium chloride (NaCl) w2.The numerical values shall be expressed as %. CALCULATE according to the Equation (5). 3.5 Determination of iron content 3.5.1 Method summary Same as the method in the Chapter 2 of GB/T 3049-1986. 3.5.2 Reagents Same as the reagents in the Chapter 3 of GB/T 3049-1986. 3.5.3 Instruments 3.5.3.1 Spectrophotometer. It has an absorption cell with the thickness of 3cm. 3.5.4 Analysis procedures 3.5.4.1 Drawing of the working curve According to the provisions in the Section 5.3 of GB/T 3049-1986, SELECT the absorption cell with the thickness of 3cm and the corresponding consumption of standard iron solution. DRAW the working curve. 3.5.4.2 Determination of test samples WEIGH 10g of test samples. ACCURATE to 0.01g. PLACE them in a beaker. ADD small amount of water for wetting. Dropwise ADD 35mL of hydrochloric acid solution (1+1). BOIL for (3~5) min. After cooling (FILTRATE if necessary), TRANSFER the solution into a 250mL volumetric flask. ADD water to the scale. SHAKE evenly. 3.6 Determination of sulfate content 3.6.1 Barium sulfate gravimetric method & arbitration method 3.6.1.1 Method summary DISSOLVE the test sample. SEPARATE the insoluble substances. PRECIPITATE the sulfate as barium sulfate in dilute hydrochloric acid medium. SEPARATE the obtained precipitations. BURN at (800 ± 25) °C. WEIGH afterwards. 3.6.1.2 Reagents 3.6.1.2.1 Ammonia; 3.6.1.2.2 Hydrochloric acid solution. 1+1; 3.6.1.2.3 Barium chloride solution. 100 g/L; 3.6.1.2.4 Silver nitrate solution. 5 g/L; USE small amount of water to dissolve 0.5g of silver nitrate. ADD 20ml of nitric acid solution (1+1). USE water to dilute to 100mL. SHAKE evenly. 3.6.1.2.5 Methyl orange indicator solution. 1 g/L. 3.6.1.4 Result calculation The sulfate content shall be counted as the mass fraction of sulfate radical (SO4) w4.The numerical values shall be expressed as %. CALCULATE according to the Equation (7). 3.6.2 Barium sulfate turbidimetry 3.6.2.1 Method summary In slightly acidic medium, USE barium chloride to precipitate sulfate ions. COMPARE with standard barium sulfate turbidimetric liquid. 3.6.2.2 Reagents 3.6.2.2.1 Barium chloride solution. 250 g/L; 3.6.2.2.2 Standard sulfate solution. 1mL of standard sulfate solution contains 0.1mg of sulfate radical (SO4); After preparing according to HG/T 3696.2, accurately DILUTE 10 times. 3.6.2.2.3 Phenolphthalein indicator solution. 10 g/L. 3.6.2.3 Analysis procedures WEIGH (1.00 ± 0.01) g of test samples. PLACE them in a 250mL beaker. ADD 20mL of water and 1 drop of phenolphthalein indicator solution. Dropwise ADD hydrochloric acid solution (3.6.1.2.2), until the phenolphthalein changes color. ADD excessive 2mL. BOIL for 2min. After cooling (FILTRATE if necessary), TRANSFER the solution into a 50mL colorimetric tube. 3.7 Determination of water insoluble substances 3.7.1 Method summary DISSOLVE the specimens in the water at (50 ± 5) °C. FILTRATE, WASH, DRY and WEIGH the insoluble substances. 3.7.2 Reagents and materials 3.7.2.1 Phenolphthalein indicator solution. 10 g/L. 3.7.2.2 Acid-washed asbestos. TAKE appropriate amount of acid-washed asbestos. SOAK it in hydrochloric acid solution (1+3). BOIL for 20min. USE a Buchner funnel for filtration. WASH the acid-washed asbestos until it becomes neutral. USE 100g/L anhydrous sodium carbonate solution for soaking. BOIL for 20min. USE a Buchner funnel for filtration. WASH the acid-washed asbestos until it becomes neutral (USE phenolphthalein indicator solution for testing). USE water to prepare into paste for standby application. 3.7.2.3 Asbestos filter paper. 3.7.3 Instruments 3.7.3.1 Gooch crucible. The volume is 30mL. 3.7.4 Crucible preparation 3.7.6 Result calculation The mass fraction of water insoluble substances shall be counted as w5.The numerical values shall be expressed as %. CALCULATE according to the Equation (9). 3.8 Determination of loss on ignition 3.8.1 Method summary HEAT the specimens at (250~270) °C to constant weight. During heating, LOSE free water and sodium bicarbonate, and thus DISCOMPOSE into water and carbon dioxide. CALCULATE the loss on ignition. 3.8.2 Instruments 3.8.2.1 Φ30mm × 25mm weighing bottle or porcelain crucible with the volume of 30mL or so. 3.8.3 Analysis procedures WEIGH about 2g of test samples. ACCURATE to 0.000 2g. PLACE them in a weighing bottle or porcelain crucible in constant weight at (250~270) °C. TRANSFER into a drying oven or high temperature furnace. HEAT at (250~270) °C to constant weight. 3.9 Determination of bulk density 3.9.1 Method summary A certain quantity of specimens enter into a cylindrical specimen tank with a known volume through a conical funnel. DETERMINE the mass of the specimens needed for filling up the specimen tank. 3.9.2 Instruments 3.9.3 Analysis procedures INSTALL the measuring device of bulk density according to Figure 1.WEIGH the mass of the specimen tank. ACCURATE to 1g. CLOSE the bottom of the funnel, so as to naturally fill the funnel with test samples. USE a ruler to scrape the higher part. KEEP the specimen tank with known mass well. OPEN the bottom of the funnel so that the specimens automatically flow into the specimen tank. USE a ruler to scrape the higher part (Do NOT move the specimen tank before levelling). WEIGH the masses of the specimens and the specimen tank. ACCURATE to 1g. 3.9.4 Result calculation The bulk density shall be counted as the mass of the unit volume ρ. The numerical values shall be expressed as gram per milliliter (g/mL). CALCULATE according to the Equation (12) below. 3.10 Determination of granularity 3.10.1 Instruments 3.10.2 Analysis procedures WEIGH about 50g of test samples. ACCURATE to 0.1g. PLACE them in the test sieve equipped with sieve bottom. COVER the sieve lid. Manually SHAKE the sieve in a horizontal direction for 2min. VIBRATE 80 times per minute. Or USE a sieve shaker to sieve for 5min. WEIGH the mass of the residues on sieve. ACCURATE to 0.1g. 3.10.3 Result calculation The mass fraction of the residues on sieve shall be counted as w6.The numerical values shall be expressed as %. CALCULATE according to the Equation (13). ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of English version of GB/T 210.2-2004 be delivered?Answer: The full copy PDF of English version of GB/T 210.2-2004 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice.Question 2: Can I share the purchased PDF of GB/T 210.2-2004_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 210.2-2004_English will be deemed to be sold to your employer/organization who actually paid for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. www.ChineseStandard.us -- GB/T 210.2-2004 -- Click this link and select your country/currency to pay, the exact amount in your currency will be printed on the invoice. Full PDF will also be downloaded/emailed in 9 seconds.How to buy and download a true PDF of English version of GB/T 210.2-2004?A step-by-step guide to download PDF of GB/T 210.2-2004_EnglishStep 1: Visit website https://www.ChineseStandard.net (Pay in USD), or https://www.ChineseStandard.us (Pay in any currencies such as Euro, KRW, JPY, AUD).Step 2: Search keyword "GB/T 210.2-2004". Step 3: Click "Add to Cart". If multiple PDFs are required, repeat steps 2 and 3 to add up to 12 PDFs to cart. Step 4: Select payment option (Via payment agents Stripe or PayPal). Step 5: Customize Tax Invoice -- Fill up your email etc. Step 6: Click "Checkout". Step 7: Make payment by credit card, PayPal, Google Pay etc. After the payment is completed and in 9 seconds, you will receive 2 emails attached with the purchased PDFs and PDF-invoice, respectively. Step 8: Optional -- Go to download PDF. Step 9: Optional -- Click Open/Download PDF to download PDFs and invoice. See screenshots for above steps: Steps 1~3 Steps 4~6 Step 7 Step 8 Step 9 |
