GB/T 3209-2009 PDF English (GB/T 3209-1982: Older version)
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Name of Chinese Standard | Status |
| GB/T 3209-2009 | English | 110 |
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Method for determination the amount of distillation residual of benzene-type product
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| GB/T 3209-1982 | English | 199 |
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Method for determining the amount of distillation residual of benzene--Type products
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PDF Preview: GB/T 3209-2009
GB/T 3209-2009: PDF in English (GBT 3209-2009) GB/T 3209-2009
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 71.080.15
G 17
Replacing GB/T 3209-1982
Method for determination the amount of distillation
residual of benzene-type product
ISSUED ON: JULY 15, 2009
IMPLEMENTED ON: APRIL 01, 2010
Issued by: General Administration of Quality Supervision, Inspection and
Quarantine of PRC;
Standardization Administration of PRC.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative references ... 4
3 Principle ... 4
4 Reagents and materials ... 5
5 Instruments and equipment... 5
6 Sampling ... 6
7 Test procedure ... 6
8 Result calculation ... 7
9 Precision ... 8
Method for determination the amount of distillation
residual of benzene-type product
1 Scope
This standard specifies the test principles for determining the amount of
distillation residual of benzene-type product, specimen collection, reagents,
instruments, test procedures, result calculations, precision.
This standard applies to the determination of the amount of distillation residual
of coking benzene, coking toluene, coking xylene. Petroleum benzene products
may also make reference to this standard.
2 Normative references
The provisions in following documents become the provisions of this Standard
through reference in this Standard. For the dated references, the subsequent
amendments (excluding corrections) or revisions do not apply to this Standard;
however, parties who reach an agreement based on this Standard are
encouraged to study if the latest versions of these documents are applicable.
For undated references, the latest edition of the referenced document applies.
GB/T 686 Chemical reagent - Acetone
GB/T 1999 Sampling of coking oil products
GB/T 3146 Benzene hydrocarbon products - Determination of distillation
range
3 Principle
Put the specimen into a distillation flask, which is equipped with a condenser.
Evaporate 3/4 of the volume. Pour the residual liquid into an aluminum dish,
which has reached constant weight. Heat and evaporate to dryness in an air
stream. Measure the weight gain of the aluminum dish, which is the amount of
distillation residual of the specimen.
4 Reagents and materials
Unless otherwise specified in the analysis, use only approved analytical
reagents and distilled water or water of equivalent purity.
4.1 Acetone: GB/T 686 analytical grade.
4.2 Air: No dust particles and oil mist.
5 Instruments and equipment
5.1 Aluminum dish: Flat bottom, outer diameter 80 mm ~ 100 mm, height 25
mm ~ 30 mm, weight about 2 g.
5.2 Electric heating constant temperature drying oven: It can maintain the
temperature 105 °C ± 3 °C.
5.3 Analytical balance: Sensitivity 0.0001 g.
5.4 Distillation instrument: Comply with the requirements of GB/T 3146.
5.5 Measuring cylinder: 100 mL graduated cylinder.
5.6 Sealed evaporator: It is composed of an evaporation hood and an
evaporating base. The hood and the bottom are connected by screws; there is
no air leakage after tightening. The evaporation hood is made of organic glass
or other transparent materials. There are air inlet pipe and an air outlet pipe, on
the opposite locations at the upper part of the evaporation hood. The
evaporation base is made of red copper plate. There are holes on the periphery
of the base, which is connected to the evaporation hood AND sealed by bolts.
The shape and size of the evaporator are as shown in Figure 1.
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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