GB/T 3710-2009 English PDF

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GB/T 3710-2009: Method of determination for crystallizing point of technical phenol and phenic acid
Status: Valid

GB/T 3710: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 3710-2009	139	Add to Cart	3 days	Method of determination for crystallizing point of technical phenol and phenic acid	Valid
GB/T 3710-2005	239	Add to Cart	2 days	Method of determination for crystallizing point of technical phenol and phenic acid	Obsolete
GB/T 3710-1983	199	Add to Cart	2 days	Method of determination for crystallizing point of technical phenol and phenic acid	Obsolete

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Basic data

Standard ID: GB/T 3710-2009 (GB/T3710-2009)
Description (Translated English): Method of determination for crystallizing point of technical phenol and phenic acid
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G17
Classification of International Standard: 71.080.90
Word Count Estimation: 6,676
Date of Issue: 2009-07-08
Date of Implementation: 2010-04-01
Older Standard (superseded by this standard): GB/T 3710-2005
Quoted Standard: GB/T 1999; YB/T 2305
Regulation (derived from): PRC National Standard Approval Announcement 2009 No.9 (Total No.149)
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 industrial phenol, principle phenol crystallization point measurement, reagents, instrument, specimens taken, test procedure, calculated results and accuracy. This standard applies to high-temperature coal tar crude phenol, obtained by fractionation of industrial phenol, determination of phenol crystallization point.

GB/T 3710-2009: Method of determination for crystallizing point of technical phenol and phenic acid

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Method of determination for crystallizing point of technical phenol and phenic acid ICS 71.080.90 G17 National Standards of People's Republic of China Replacing GB/T 3710-2005 Industrial, phenol crystallization point measuring method Posted 2009-07-08 2010-04-01 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 3710-2005 "industry, phenol crystallization point measuring method." This standard compared with GB/T 3710-2005 The main changes are as follows. --- "Normative references" in, "GB/T 1999 coking products light oil sampling method" was changed to "GB/T 1999 coking oil Products sampling method "; --- "5.3 Precision thermometer" in the temperature range from the "10 ℃ ~ 50 ℃" to "0 ℃ ~ 50 ℃"; --- "Thermometer 5.4" to "5.4 Exposed thermometer correction"; --- "5.5 Thermometer. Temperature range 0 ℃ ~ 100 ℃, sub-scale 1 ℃" after the increase "(YB/T 2305 in COK26C)". The standard proposed by China Iron and Steel Association. This standard is under the jurisdiction of the National Steel Standardization Technical Committee. This standard was drafted. Baosteel Group Shanghai Meishan Co., Ltd. Nanjing Chemical Industry Branch, Wuhan University of Science and Technology, Metallurgical Industry Information Standards Institute. The main drafters of this standard. Lu Hui, Cheng Yaping, Zhao Minlun, HE Xuan Ming and Qin Jin, Zhang Shaochun, Sun Wei. This standard replaces the standards previously issued as follows. --- GB 3710-1983, GB/T 3710-2005. Industrial, phenol crystallization point measuring method

1 Scope

This standard specifies the principles of technical phenol and crystallization point measurement, reagents, instruments, sample taking, test procedures, the results of calculation and precision Accuracy. This standard applies to high-temperature coal tar crude phenol, measured by the fractionation of the obtained technical phenol and crystallization point.

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 according to study Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 1999 coking oil products sampling methods YB/T 2305 coking products testing Thermometers Principle 3 Industrial phenol, phenol cooling when the temperature is gradually decreased to a certain temperature began to have crystals, and since the release of the heat of crystallization, the temperature Recovered slightly, reaching the highest point, and stable for a moment, then continued to decline, the highest point of the temperature measurement is the crystallization point.

4 Reagents

Zeolite. 4A, powdered, granular ≤125μm (≥120 mesh mesh). Before using the high-temperature furnace burning 2h at 450 ℃ ~ 500 ℃, the Stored in the non-desiccant dryers.

5 Instruments

5.1 crystallization point tester. Figure 1. 5.1.1 pipe. diameter 22mm ± 1mm, length 155mm ± 2mm. 5.1.2 outer tube. diameter 40mm ± 2mm, length 145mm ± 2mm. 5.1.3 Stirrer. by the diameter of 1mm ~ 2mm stainless steel wire around the outer diameter of 18mm spiral of three turns, and leads to a handle. 5.2 bath. 1000mL beaker high type. 5.3 Precision Thermometer. Temperature range 0 ℃ ~ 50 ℃, sub-scale of 0.1 ℃ (YB/T in 2305 COK2C). 5.4 Exposed correction Thermometer. Temperature range 0 ℃ ~ 50 ℃, sub-scale 1 ℃ (YB/T in 2305 COK23C). 5.5 Thermometer. Temperature range 0 ℃ ~ 100 ℃, sub-scale 1 ℃ (YB/T in 2305 COK26C). 5.6 Magnifier. 5 times.

6 samples taken

Samples were taken according to GB/T 1999 regulations. ......

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