GB 23937-2009 Translated English of Chinese Standard. GB23937-2009: Sodium hydrosulfide for industrial usehttps://www.chinesestandard.net, 29 เม.ย. 2014 - 12 หน้า This Standard specifies the requirements, test methods, inspection rules, marking, labeling, packaging, transportation, storage and safety of sodium hydrosulfide for industrial use. This Standard is applicable to sodium hydrosulfide for industrial use, and the product is mainly used for beneficiation, pesticide, leather, dye production, organic synthesis and other industries. |
เนื้อหา
| 3 | |
Scope | 4 |
Molecular formula and relative molecular mass | 5 |
Inspection rules | 10 |
Marking and labeling | 11 |
Safety | 12 |
คำและวลีที่พบบ่อย
acid standard titration acid titration solution Acidity meter ADD water alizarin yellow GG arithmetic mean batch number blank test blue mixed indicator calculated according chemical analysis HG/T Chemical Industry chemical products Preparations conical flask consumed when titrating content is calculated documents so quoted ethanol solution exact concentration value filtrate formaldehyde fully soluble sample fume cupboard hydrochloric acid standard hydrochloric acid titration hydrochloric standard titration hydrosulfide for industrial Inorganic chemical products iron content liquid sample manufacturer name mass fraction mass of fully medium-speed filter paper meet requirements Molar mass value Molecular formula Packaging parallel determination results phenolphthalein indicating liquid porcelain crucible product name reagents Resultcalculation sample solution WEIGH schistose Sodium hydrosulfide content Sodium hydrosulfide NaHS sodium hydroxide sodium sulfide content sodium sulfide Na2S soluble sample solution solution to titrate solutions for chemical specified in GB/T Standard number standard titration solution test solution detected titration solution consumed unit volume value volumetric flask