GB/T 32159-2015Coking pure pyridine (English PDF)
焦化纯吡啶
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
October 9, 2015
Implementation date
December 1, 2015
Scope
GB/T 32159-2015 is the English-translated version of 焦化纯吡啶.
GB/T 32159-2015 specifies the technical requirements, the test methods, the inspection rules, the marking, packaging, transport and storage, the quality certificate and the safety precautions for coking pure pyridine.
Clause 1 states that it applies to the product with a pyridine content of not less than 99.0% obtained by distillation from the crude light pyridine prepared from coal tar, residual ammonia and ammonium sulfate liquor.
Clause 2 cites GB/T 1999 on sampling methods for coking oil products, GB/T 2281 on their density test method, GB/T 2288 on the determination of their moisture content, GB/T 3143 on the colour of liquid chemicals in Hazen units as a platinum-cobalt colour number, GB/T 8170, and GB/T 24199 on the gas chromatographic determination of the pyridine content of pure pyridine.
Clause 3, Technical requirements, puts the whole specification in Table 1: appearance not more than 30 platinum-cobalt units, pyridine content by mass fraction not less than 99.0%, density at 20 °C between 0.980 and 0.984 g/cm3, and moisture by mass fraction not more than 0.2%.
Clause 4, Test method, assigns each of those four characteristics to a cited standard: the appearance to GB/T 3143, the pyridine content to GB/T 24199, the density to GB/T 2281 and the moisture to the Karl Fischer method of GB/T 2288.
The draft on the source page ends with 4.4, so the inspection rules, the packaging, transport and storage provisions, the quality certificate and the safety precautions announced in clause 1 are not shown.
The page gives ICS 71.080.99 and Chinese classification G16, estimates the text at 4,477 words, and records that the standard was proposed by the China Iron and Steel Association and administered by the National Coal Chemical Industry Standardization Technical Committee (SAC/TC469). It was issued on 9 October 2015 and has applied since 1 December 2015.
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Document preview — GB/T 32159-2015
National Standard of the People's Republic of China
- ICS
- 71.080.99
- Classification
- G 16
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Technical requirements
- 4 Test Method
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 given rules. The standard proposed by China Iron and Steel Association.
1 Scope
This standard specifies the technical requirements of coking pure pyridine, test methods, inspection rules, marking, packaging, transportation, storage, and quality certificate Safety Precautions.
This standard applies to the coal tar residual ammonia, ammonium sulfate pyridine light crude preparation of liquor, obtained by distillation pyridine content of not less than 99.0% of the product.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 1999 coking oil products sampling methods
GB/T 2281 coking oil products density test method
GB/T 2288 coking products Determination of moisture content
GB/T 3143 Determination of color liquid chemicals (Hazen unit - platinum - cobalt color number)
GB/T 8170 repair value expressed about the rules and limit values and judgment
GB/T 24199 pure pyridine pyridine content in gas chromatographic method
3 Technical requirements
Technical requirements coking pure pyridine comply with Table 1.
Table 1 - Item / Index
Appearance (platinum - cobalt units) not more than 30
Pyridine content (mass fraction)/not less than 99.0%
Density (20 °C)/(g/cm3) 0.980 ~ 0.984
Moisture (mass fraction)/not more than 0.2%
4 Test Method
4.1 Determination of appearance according to GB/T 3143 regulations.
4.2 Determination of the content of pyridine according to GB/T 24199 regulations.
4.3 Determination of Density according to GB/T 2281 regulations.
4.4 Determination of moisture content by GB/T 2288 in the Karl Fischer method regulations.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
Normative references
- GB/T 1999Sampling of coking oil products
- GB/T 2281Determination of density of coking oil products
- GB/T 2288Coking products - Determination of moisture content
- GB/T 8170Rules of rounding off for numerical values & expression and judgement of limiting values
- GB/T 24199Refined pyridine - Determination of pyridine content - Gas chromatographic method
GB/T 3143
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