This standard specifies the technical requirements, test methods and packaging, marking, transportation and storage requirements for petroleum toluene. This standard applies to petroleum toluene obtained by light refining and separation of reformed oil obtained from the catalytic reforming process or light tar obtained from the ethylene cracking process. GB 3406-1990 Petroleum toluene GB3406-1990 standard download and decompression password: www.bzxz.net

National Standard of the People's Republic of China
Petroleum toluene
Petroleum toluene
GB3406--90
Replaces GB3406--82
Intermediate products of this standard adopt international standards with reference ISO5272-1979 "Toluene for Industrial Use - Specifications". 1 Subject content and scope of application
This standard specifies the technical requirements, test methods and packaging, marking, transportation and storage requirements for petroleum toluene. This standard applies to petroleum toluene obtained by refining and separating the reformed oil obtained from the catalytic reforming process or the light tar obtained from the ethylene cracking process.
Petroleum toluene products are used as chemical raw materials and solvents in nitrification and synthesis processes. 2 Reference standards
GB511 Determination of mechanical impurities in petroleum products and additives (gravimetric method) GB1816
GB2012
GB2013
GB3143
GB3144||tt| | GB3209 | | tt | Method (Hazen unit - Gas chromatographic determination of hydrocarbon impurities in toluene - Determination of evaporation residues of benzene products - Sampling method for petroleum and liquid petroleum products (manual method) ZBE30005
ZBE31002
Packaging of petroleum products , storage, transportation and delivery acceptance rules platinum-cobalt color number)
Qualitative test method for mercaptans in aromatic hydrocarbons and light petroleum products (Ph.D. test method) SY2505 Determination of trace sulfur in light petroleum products (nickel reduction method ) SY2506 Determination of total sulfur content in light petroleum products (electricity method) 3 Technical requirements and test methods
3.1 Petroleum toluene products are divided into superior products and first-class products according to quality. 3.2 The quality indicators and test methods of petroleum toluene are shown in the table below. Item
Item
Appearance
Color (Hazen unit-
Density (20℃), kg/m
Platinum-cobalt color number)|| tt||Not deeper than
Superior product approved by the State Bureau of Technical Supervision on December 30, 1990
Quality index
First-class product
Transparent liquid, no insoluble water and mechanical impurities 20
865~868
Test method
Visual inspection”
GB3143
GB2013
Implemented on 1991-10-01| |tt||Hydrocarbon impurity content:
item
benzene content, % (m/m))bzxz.net
C8 aromatic hydrocarbon content, % (m/m)
Non-aromatic hydrocarbon content, % (m/m)
Acid washing colorimetry
Total sulfur content, mg/kg
Evaporation residue, mg/100mL
Doctoral test
Neutral test
| |tt||GB
3406—90
Continuation table
Quality index
Superior grade product
0.05
0. 05| | tt | g standard solution of potassium dichromate
2
5
pass
neutral
Note: 1) Visual inspection at 20±3℃. When there is a dispute about mechanical impurities, the GB511 method shall be used for measurement, and it shall be zero. 2) The SY2505 method shall be used for measurement. In case of dispute, the SY2506 method shall prevail. Packaging, marking, transportation, storage
Packaging, marking, storage Transportation and delivery acceptance shall be carried out in accordance with ZBE30005. Sampling shall be carried out in accordance with GB4756, and 2L shall be taken as inspection and retention samples. Additional notes:
This standard is approved by China Petrochemical Corporation. Proposed by the company. This standard is under the technical jurisdiction of the Petrochemical Research Institute. The main drafter of this standard is Xu Rongling.
The superior products in this standard refer to the British Standard BS805-1977. "Toluene Specifications" are formulated. Test methods
GB3144
GB2012
SY25062)
GB3209
ZBE31002
GB1816
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