GB/T 12688.1-2011
Test method of styrene for industrial use—Part 1:Determination of purity and hydrocarbon impurities—Gas chromatography (English Version)

Standard No.: GB/T 12688.1-2011
Language: Chinese, Available in English version
Release Date: 2011
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Status: Be replaced 2020-05
Replace By: GB/T 12688.1-2019
Latest: GB/T 12688.1-2019
Replace: GB/T 12688.1-1998

Scope: This part specifies the determination of the purity and hydrocarbon impurities of styrene for industrial use by gas chromatography. This section applies to the determination of styrene with a purity (mass fraction) of not less than 99% and a hydrocarbon impurity concentration (mass fraction) range of (0.001 to 1.000)%. Typical hydrocarbon impurities include: ethylbenzene, p-xylene, m-xylene, o-xylene, cumene, n-propylbenzene, m-methylethylbenzene, p-methylethylbenzene, α-methylstyrene, phenylacetylene, m-methylbenzene Base styrene, p-methyl styrene. Although this method can also be applied to styrene samples with lower purity, it may be difficult to identify all impurities and select a suitable internal standard. This section is not intended to explain the safety issues related to its use, the user is responsible for taking appropriate safety and health measures, and to ensure compliance with relevant national regulations. CAUTION: Styrene is flammable. Exothermic polymerization will occur in contact with peroxides, mineral acids and aluminum trichloride, etc. High concentrations of liquid styrene and its vapors are irritating to the eyes and respiratory system.

GB/T 12688.1-2011 Referenced Document

GB/T 3723 Sampling of chemical products for industrial use--Safety in sampling
GB/T 6680 General rules for sampling liquid chemical products
GB/T 8170 Rules of rounding off for numerical values & expression and judgement of limiting values

2019 GB/T 12688.1-2019 Test method of styrene for industrial use—Part 1：Determination of purity and hydrocarbon impurities—Gas chromatography
2011 GB/T 12688.1-2011 Test method of styrene for industrial use—Part 1:Determination of purity and hydrocarbon impurities—Gas chromatography
1998 GB/T 12688.1-1998 Styrene for industrial use--Determination of purity--Capillary gas chromatography