Text file of the sodium bisulfate standard ZB/TG12002-87
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Dear experts: Does anyone have the text document for sodium bicarbonate ZB/TG12002-87? Could it be shared? Is it ZBG12002 87? This post was last edited by lifanwang on 2009-3-17 at 11:46.]
Please confirm that this standard number exists; searches online have yielded no relevant results. Product name: Sodium bicarbonate 98%. Product specification: 25KG per package. Product category: Inorganic chemicals/other inorganic chemical raw materials. Place of origin: Tianjin. Price: 2.5 yuan/KG. Note: Properties of sodium bicarbonate 98%: white granular crystals, specific gravity of 2.103 (13.5/40); melting point of 58.50°C. When heated, it loses its crystalline water to form an anhydrous form, and further heating causes it to decompose into sodium bisulfate. It dissolves in water, resulting in an acidic reaction. Purpose: It can be used as a pH adjuster to replace sulfuric acid. Unlike sulfuric acid, it is not dangerous during transportation and use, making it easy to handle. It can be used to manufacture ceramics, marble, detergents for bathrooms, as well as pre-treatment agents for pickling and electroplating and painting. It can be used in bleaching auxiliaries, leather, pulp, and dyeing auxiliaries. Packaging specification: 25 Kg, in plastic bags. Molecular formula: NaHSO4 Molecular weight: 120.05 This product meets the requirements of standard ZBG12002-87. Specification items: Main content, calculated as NaHSO4: % ≥98.0 Iron (Fe): % ≤0.10 Water-insoluble substances: % ≤0.10 Disclaimer: The information presented here is provided by the enterprise itself; the authenticity, accuracy, and legality of such information are the responsibility of the issuing enterprise. China Chemical Network assumes no responsibility for this information. In principle, we recommend that you choose the advanced member or VIP member option on China Chemical Network. Contact information: Company name: Guangzhou Tuoyi Trading Co., Ltd.; Phone number: 020-22829920; Contact person: Chen Xiangkun. This post was last edited by lifanwang on 2009-3-17 at 11:44
Boss: What I need is the testing method. This standard is indeed used online, but I can’t find it!
1. % on a NaHSO4 basis ≥98.0: This can be determined by acid-base titration – weigh 2–3 grams of the sample, dissolve it in water, and then titrate it directly with a base.
2. % iron (Fe) ≤0.10: This can be measured using the o-phenanthroline spectrophotometry method (this method can be found through searches within the facility).
3. % water-insoluble substances ≤0.10: The sample is dissolved in water, filtered, dried, and the weight is used to calculate the value
2. % iron (Fe) ≤0.10: This can be measured using the o-phenanthroline spectrophotometry method (this method can be found through searches within the facility).
3. % water-insoluble substances ≤0.10: The sample is dissolved in water, filtered, dried, and the weight is used to calculate the value
Could you upload the text file of ZB/TG12002-87?