GB/T 7815-2008 English PDF

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GB/T 7815-2008: Pentaerythritol for industrial use
Status: Valid

GB/T 7815: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 7815-2008	279	Add to Cart	3 days	Pentaerythritol for industrial use	Valid
GB/T 7815-1995	319	Add to Cart	3 days	Pentaerythritol for industrial use	Obsolete
GB 7815-1987	239	Add to Cart	2 days	Pentaerythritol for industrial use	Obsolete

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Basic data

Standard ID: GB/T 7815-2008 (GB/T7815-2008)
Description (Translated English): Pentaerythritol for industrial use
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G17
Classification of International Standard: 71.080.60
Word Count Estimation: 12,186
Date of Issue: 2008-05-14
Date of Implementation: 2008-10-01
Older Standard (superseded by this standard): GB/T 7815-1995
Regulation (derived from): National Standard Approval Announcement 2008 No.8 (Total No.121)
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the requirements for industrial use pentaerythritol, test methods, inspection rules and signs, packaging, transport and storage. This standard applies to formaldehyde and acetaldehyde, sodium hydroxide or calcium hydroxide as a catalyst for industrial production of pentaerythritol production, inspection and sales.

GB/T 7815-2008: Pentaerythritol for industrial use

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Pentaerythritol for industrial use ICS 71.080.60 G17 National Standards of People's Republic of China Replacing GB/T 7815-1995 Industrial Pentaerythritol Posted 2008-05-14 2008-10-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard replaces GB/T 7815-1995 "industrial pentaerythritol." This standard and GB/T 7815-1995 compared to the main changes are as follows. --- "Range" from the "This standard applies to explosives other than the addition of pentaerythritol industry" to "This standard applies to formaldehyde and acetaldehyde As raw material, sodium hydroxide or calcium hydroxide as the catalyst for the production of industrial pentaerythritol production, testing and marketing of " (See Chapter 1); --- Increase "category and named" chapter (see Chapter 3); --- Technical requirements increase the appearance (see 4.1); --- Industrial pentaerythritol product classification superior products, first-class products, qualified for the modification of industrial purity by typing pentaerythritol (1995 Edition Chapter 3, edition 4.2); --- To increase the melting point of the final project (see 4.2); --- Technical requirements by the content of mono-pentaerythritol superior product ≥93%, first-class product ≥86%, qualified product does not control the modification of pentaerythritol Content 98 ≥98.0%, pentaerythritol [in C (CH2OH) 4 meter] content 95 ≥95.0%, 90 Ji ≥90.0%, 86 ≥86.0%, hydroxyl content of ≥47% by the high-class product, first-class product ≥47%, ≥46% qualified products modified to 98 ≥48.5%, 95 Ji ≥47.5%, 90 Ji ≥47.0%, 86 Ji ≥46.0%, loss on drying by the high-class product, first-class goods ≤0.5%, qualified products ≤0.7% revised to 98 ≤0.20%, 95 grade 90, 86 ≤0.50%, Residue on ignition by a superior Products, first-class products, qualified ≤0.1% revised to 98 ≤0.05%, 95 grade 90 and 86 ≤0.10%, phthalic Resin coloring degree (Fe, Co, Cu standard color solution number) by the superior product ≤2, first-class goods ≤4, qualified product ≤6 revised to 98 ≤1, 95, 90 ≤2,86 level ≤4, eventually melting point 98 ≥250 ℃, no other level control (1995 Edition Chapter 3, Excerpts 4.2); Standard Test Method for Determination --- pentaerythritol increased by gas chromatography, and as 98 of the Arbitration Act (see 5.3.2); --- A final melting point measurement method using Melting Point method (see 5.8); --- Increased "inspection rules" section (see Chapter 6). Appendix A of this standard is an informative annex. The standard proposed by China Petroleum and Chemical Industry Association. This standard by the National Standardization Technical Committee branch of organic chemistry (SAC/TC63/SC2) centralized. This standard is drafted by. Hubei Yihua Group Limited Liability Company. Participated in the drafting of this standard. Puyang City, Peng Xin Chemical Co., Ltd., Jiangsu Liyang Ruiyang Chemical Co. The main drafters of this standard. Jiang Yuanhua, FORESTRY AND HE Tao, Bianping Guan, Zhang Xiang, such as Dong Yan, Liu Qidong. This standard was first released in May 1987, in December 1995 the first amendment. Industrial Pentaerythritol

1 Scope

This standard specifies the use of pentaerythritol industry requirements, test methods, inspection rules and signs, packaging, transportation and storage. This standard applies to formaldehyde and acetaldehyde as raw materials, sodium hydroxide or calcium hydroxide as the catalyst for the production of industrial pentaerythritol production, Testing and marketing. Molecular formula. C (CH2OH) 4 Molecular weight. 136.14 (according to 2005 international relative atomic mass)

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 191-2008 Packaging - Pictorial signs (ISO 780.1997MOD) Preparation of GB/T 601-2002 Chemical Reagent standard titration solution GB/T 603-2002 Chemical Reagent Test Methods Preparations with (ISO 6353-1. 1982, NEQ) GB/T 617-2006 Chemical Reagent melting range of common measurement method (ISO 6353-1. 1982, NEQ) Representation GB/T 1250 limit values \u200b\u200band the method of determining GB/T 6678-2003 General Principles for Sampling Chemical Products GB/T 6679-2003 General rules for sampling solid chemical products GB/T 6682-1992 analytical laboratory use specifications and test methods (ISO 3696. 1987, NEQ) GB/T 7531-1987 Determination of organic chemical products ash (ISO 6353-1. 1982, NEQ)

3 Classification and nomenclature

Press the industrial pentaerythritol purity of 98%, 95%, 90%, 86% divided into four types, designated as 98, 95, 90, 86.

4 Requirements

4.1 Appearance. white crystals. 4.2 Industrial pentaerythritol shall comply with the technical requirements in Table 1 below. Table 1 Technical Requirements project index Pentaerythritol mass fraction /% ≥ 98.0 - - - Pentaerythritol (in C (CH2OH) 4 meter) a mass fraction /% ≥ - 95.0 90.0 86.0 The mass fraction of hydroxyl groups /% ≥ 48.5 47.5 47.0 46.0 Drying loss mass fraction /% ≤ 0.20 0.50 Burning residue mass fraction /% ≤ 0.05 0.10 Phthalate resin coloring degree/(Fe, Co, Cu standard color solution) ≤ No. 124 Final melting point/℃ ≥ 250 - - - The content of a cyclic formals of pentaerythritol and pentaerythritol are translated into C (CH2OH) 4 included. ......

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