haohan工业用季戊四醇测定10%OV-101/Chromosorb GAW DMCS填充柱2m*3mm

本标准于１９８７年５月首次发布，于１９９５年１２月修订。本标准代替ＧＢ／Ｔ７８１５—１９９５《工业用季戊四醇》。本标准规定了工业用季戊四醇的要求、试验方法、检验规则以及标志、包装、运输和贮存等。本标准适用于以甲醛和乙醛为原料，氢氧化钠或氢氧化钙为催化剂生产的工业用季戊四醇的生产、检验和销售。 本标准与ＧＢ／Ｔ７８１５—１９９５相比主要变化如下：
———“范围”由“本标准适用于除炸药用以外的工业季戊四醇”修改为“本标准适用于以甲醛和乙醛为原料，氢氧化钠或氢氧化钙为催化剂生产的工业用季戊四醇的生产、检验和销售”（见第１章）；
———增加“分类和命名”一章（见第３章）；
———技术要求中增加外观（见４．１）；
———将工业用季戊四醇产品分级优等品、一等品、合格品修改为按工业用季戊四醇的纯度分型（１９９５年版的第３章，本版的４．２）；
———增加终熔点项目（见４．２）；
———技术要求中单季戊四醇含量由优等品≥９３％、一等品≥８６％、合格品不控制修改为季戊四醇的含量９８级≥９８．０％、季戊四醇［以Ｃ（ＣＨ２ＯＨ）４ 计］的含量９５ 级≥９５．０％、９０ 级≥９０．０％、８６级≥８６．０％，羟基含量由优等品≥４７％、一等品≥４７％、合格品≥４６％ 修改为９８ 级
≥４８．５％、９５ 级≥４７．５％、９０ 级≥４７．０％、８６ 级≥４６．０％，干燥减量由优等品、一等品≤０．５％、合格品≤０．７％修改为９８级≤０．２０％、９５级、９０级、８６级≤０．５０％，灼烧残渣由优等品、一等品、合格品≤０．１ ％修改为９８级≤０．０５％、９５级、９０级和８６级≤０．１０％，邻苯二甲酸树脂着色度（Ｆｅ、Ｃｏ 、Ｃｕ标准比色液号）由优等品≤２、一等品≤４、合格品≤６修改为９８级≤１、９５级、９０级≤２、８６级≤４，终熔点９８级≥２５０℃，其他级不控制（１９９５ 年版的第３ 章，本版的４．２）；
———季戊四醇含量测定的试验方法增加了气相色谱法，并作为９８级的仲裁法（见５．３．２）；
———终熔点测定方法采用熔点仪法（见５．８）；
———增加了“检验规则”一章（见第６章）。


名称：填充柱
固定液：10%OV-101
载体：Chromosorb GAW DMCS，180um-250um
规格：2m*3mm
型号：10%OV-101/Chromosorb GAW DMCS
应用：GBT 7815-2008 工业用季戊四醇
 
This standard was first published in May 1987 and revised for the first time in December 1995. This standard replaces GB/T7815-1995 "Industrial Pentaerythritol". This standard specifies the requirements, test methods, inspection rules, marking, packaging, transportation and storage of pentaerythritol for industrial use. This standard applies to the production, inspection and sales of industrial pentaerythritol produced with formaldehyde and acetaldehyde as raw materials and sodium hydroxide or calcium hydroxide as catalyst. Compared with GB/T7815-1995, the main changes of this standard are as follows:
--- "Scope" is changed from "This standard applies to industrial pentaerythritol other than explosives" to "This standard applies to industrial pentaerythritol produced with formaldehyde and acetaldehyde as raw materials and sodium hydroxide or calcium hydroxide as catalyst. production, inspection and sale” (see Chapter 1);
--- Add a chapter "Classification and Nomenclature" (see Chapter 3);
--- Add appearance to technical requirements (see 4.1);
--- Modify the classification of industrial pentaerythritol products as superior products, first-class products, and qualified products to be classified according to the purity of industrial pentaerythritol (Chapter 3 of the 1995 edition, 4.2 of this edition);
--- increase the final melting point item (see 4.2);
——In the technical requirements, the content of monopentaerythritol is changed from high-quality products ≥ 93%, first-class products ≥ 86%, and qualified products are not controlled to be changed to pentaerythritol content of grade 98 ≥ 98.0%, pentaerythritol [calculated as C(CH2OH)4] The content of 95 grade ≥ 95.0%, 90 grade ≥ 90.0%, 86 grade ≥ 86.0%, and the hydroxyl content of the first-class product ≥ 47%, the first-class product ≥ 47%, and the qualified product ≥ 46% were revised to 98 class
≥48.5%, 95 grade ≥47.5%, 90 grade ≥47.0%, 86 grade ≥46.0%, drying weight loss from high-quality products, first-class products ≤0.5%, qualified products ≤0 .7% is revised to 98 grades ≤ 0.20%, 95 grades, 90 grades, 86 grades ≤ 0.50%, and the burning residue is revised from superior products, first grade products, qualified products ≤ 0.1% to grade 98 ≤ 0.05%, 95, 90 and 86 ≤ 0.10%, phthalic acid resin coloring degree (Fe, Co, Cu standard colorimetric solution number) is from the first-class product ≤ 2, the first-class product ≤ 4, Qualified product ≤ 6 is revised to 98 grade ≤ 1, 95 grade, 90 grade ≤ 2, 86 grade ≤ 4, final melting point 98 grade ≥ 250 ℃, other grades are not controlled (Chapter 3 of the 1995 edition, 4.2 of this edition );
--- The test method for the determination of pentaerythritol content adds gas chromatography, and it is used as a 98-level arbitration method (see 5.3.2);
--- The final melting point determination method adopts the melting point apparatus method (see 5.8);
--- Added "Inspection Rules" chapter (see Chapter 6).


Name: Packed Column
Fixative: 10%OV-101
Carrier: Chromosorb GAW DMCS, 180um-250um
Specifications: 2m*3mm
Model: 10%OV-101/Chromosorb GAW DMCS
Application: GBT 7815-2008 Industrial Pentaerythritol