Standards

SH/T 1492-2020 Active

SH/T 1492-2020 Industrial 1-Butene Purity and Hydrocarbon Impurity Determination by Gas Chromatography

This standard is applicable to the determination of industrial 1-butene samples with a purity of not less than 99.00% (by mass fraction) and a content of hydrocarbon impurities such as propane, propylene, isobutane, n-butane, acetylene, cis-2-butene, isobutene, and trans-2-butene not less than 0.001% (by mass fraction). The content of propylene oxide, propargyne, and 1,3-butadiene should not exceed 2 mL/m3 and 10 mL/m3, respectively, or 0.001% (by mass fraction). Since this standard cannot determine all possible impurities such as oxygen-containing compounds, isobutene dimers, and water, it is necessary to apply other test methods to comprehensively characterize 1-butene samples.

Publish Date: 2020-12-19

SH/T 1483-2020 Active

SH/T 1483-2020 Determination of trace oxidized compounds in industrial carbon-four olefins by gas chromatography: SH/T 1483-2020

This standard is applicable to the determination of trace amounts of dimethyl ether, methyl tert-butyl ether, methanol, and tert-butanol and other oxygen-containing compounds in industrial C4 hydrocarbons, with a minimum detection concentration of 0.0001% (by mass).

Publish Date: 2020-12-19

SH/T 1482-2020 Active

SH/T 1482-2020 Industrial Isobutylene Purity and Hydrocarbon Impurity Determination by Gas Chromatography

This standard is applicable to the determination of industrial isobutylene with a purity greater than 98.00% (by mass fraction) and a content of hydrocarbon impurities such as propane, propylene, isobutane, n-butane, cis-2-butene, 1-butene, trans-2-butene, propargyne, 1,3-butadiene, n-pentane, and isopentane not less than 0.0010% (by mass fraction). Since this standard cannot determine all possible impurities such as oxide compounds, isobutylene dimers, and water, it is necessary to apply other test methods to comprehensively characterize isobutylene samples.

Publish Date: 2020-12-19

SH/T 1142-2020 Active

SH/T 1142-2020 Industrial pyrolysis C4 liquid sampling method

This standard applies to the sampling of cracked C4 and other liquid C4 hydrocarbons used in industry. This standard includes recommendations for the location of sampling points in pipelines or storage tanks. Users are responsible for ensuring that the location of the sampling points enables the collection of representative samples.

Publish Date: 2020-12-19

SH/T 1832-2020 Active

SH/T 1832-2020 Determination of Microstructure of Isoprene Rubber by Nuclear Magnetic Resonance Hydrogen Spectrum Method

This standard is applicable to the determination of the content of cis-1,4 structure, trans-1,4 structure, and 3,4 structure in isoprene rubber (IR).

Publish Date: 2020-12-19

SH/T 1831-2020 Active

SH/T 1831-2020 Determination of Free Acrylonitrile Content in Acrylonitrile-Butadiene Rubber by Headspace Gas Chromatography

This standard applies to acrylonitrile-butadiene rubber, with a minimum detection limit for free acrylonitrile content of 1.8mg/kg.

Publish Date: 2020-12-19

SH/T 1830-2020 Active

SH/T 1830-2020

This standard applies to acrylonitrile-butadiene rubber. The minimum detection limit for the content of nonylphenol in a single component is 14 mg/kg.

Publish Date: 2020-12-19

SH/T 1829-2020 Active

SH/T 1829-2020 Determination of trace element content in plastic polyethylene and polypropylene resins by inductively coupled plasma emission spectroscopy

This standard applies to powdered and granular polyethylene and polypropylene resins, as well as their copolymers and blends. It uses inductively coupled plasma emission spectrometry to determine the content of trace elements such as magnesium, aluminum, calcium, zinc, chromium, and titanium in these materials.

Publish Date: 2020-12-19

SH/T 1828-2020 Active

SH/T 1828-2020 Plastic spunbond nonwoven fabric with polypropylene resin

This standard applies to additive-containing granular propylene homopolymers obtained by polymerizing propylene under the action of a catalyst, which are used in the production of nonwoven fabrics (non-woven fabrics) by spunbonding and the combined process of spunbonding and meltblowing.

Publish Date: 2020-12-19

SH/T 1814-2020 Active

SH/T 1814-2020

This standard applies to ethylene-propylene rubber with a vanadium content ranging from 0.5 μg/g to 40 μg/g, produced using Ziegler-Natta catalysts (aluminum-vanadium catalysts).

Publish Date: 2020-12-19

SH/T 1763-2020 Active

SH/T 1763-2020 The determination of residual unsaturation in hydrogenated nitrile rubber (HNBR) using iodine value method

This standard is applicable to the determination of the residual unsaturation (i.e., iodine value) of hydrogenated nitrile rubber (HNBR) using Wijs reagent.

Publish Date: 2020-12-19

SH/T 1549-2020 Active

SH/T 1549-2020 Guidelines for using online analyzers for the determination of moisture in industrial light olefins

This standard provides guidelines for the working principle, general characteristics, analysis procedures, and result reporting of online analyzers used to determine trace amounts of water in light olefin gases

Publish Date: 2020-12-19