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SH/T 1499.8-1997 PDF in English


SH/T 1499.8-1997 (SH/T1499.8-1997, SHT 1499.8-1997, SHT1499.8-1997)
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SH/T 1499.8-1997: PDF in English (SHT 1499.8-1997)

SH/T 1499.8-1997 SH PETROCHEMICAL INDUSTRY STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 71.080.40 G 15 Pure adipic acid – Determination of content of oxidizable compounds – Titrimetric method ISSUED ON. JULY 12, 1997 IMPLEMENTED ON. DECEMBER 01, 1997 Issued by. China Petrochemical Corporation Table of contents Foreword ... 3  1 Scope ... 4  2 Normative reference ... 4  3 Method summary ... 4  4 Reagents and solutions ... 4  5 Instruments and equipment ... 5  6 Sampling ... 5  7 Analytical procedures ... 5  8 Expression of analytical results ... 5  9 Precision... 6  10 Report ... 6  Foreword This standard equivalently adopts the clause 4.11 Determination of the oxidizable compounds mass fraction by oxalic acid in TOCT 10558-80* (with the No.2 modification notification passed in September 1989, AND the No.3 modification notification passed in March 1992) “Adipic acid – Technical conditions”. This version provides the test method when revising SH/T 1499-92. This standard is drafted in accordance with the requirements of GB/T 1.1-1993 in terms of drafting principles. This standard was proposed by Liaoyang Petrochemical Company. This standard shall be under the jurisdiction of the National Chemical Standardization Technical Committee Petrochemical Technical Subcommittee. This standard is responsibly drafted by Shanghai Petrochemical Research Institute. The main drafters of this standard. Li Zhengwen, Ma Yaping. This standard was first published on July 12, 1997. Pure adipic acid – Determination of content of oxidizable compounds – Titrimetric method 1 Scope This standard specifies the potassium permanganate oxidation-reduction titration method for the determination of the content of the oxidizable compounds (by oxalic acid) in the pure adipic acid. This standard is applicable to the determination of the content of the oxidizable compounds (by oxalic acid) in the pure adipic acid 2 Normative reference The provisions in following documents become the provisions of this Standard through reference in this Standard. The versions indicated at the time of publication of this standard are valid. All standards are subjected to revision, AND parties who reach an agreement based on this Standard are encouraged to study if the latest versions of these documents are applicable. GB/T 601-88 Chemical reagent – Preparations of standard volumetric solutions GB/T 6678-86 General principles for sampling chemical products GB/T 6679-86 General rules for sampling of solid chemical products GB/T 6682-92 Water for laboratory use; Specifications 3 Method summary The solid sample is dissolved in a strong acid medium AND then titrated by the potassium permanganate standard titration solution at a temperature of 80 °C ~ 85 °C. 4 Reagents and solutions Unless otherwise noted, the reagents used are analytical pure, AND the water used shall comply with the level III water specifications of GB/T 6682. 4.1 Sulfuric acid solution (1.4). 4.2 Potassium permanganate standard titration solution [c(1/5KMnO4 = 0.1mol/L)]. PREPARE it in accordance with the requirements of GB/T 601. ......
 
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.