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SH/T 1745-2025Determination of Purity and Impurities of Industrial Cumene - Gas chromatography (English PDF)

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Issued by

Ministry of Industry and Information Technology

Level / Type

National · Recommended

Issue date

April 10, 2025

Implementation date

November 1, 2025

Scope

SH/T 1745-2025 (Determination of Purity and Impurities of Industrial Cumene - Gas chromatography) is available as an English-translated PDF.

SH/T 1745-2025 — This standard specifies a method for determining the purity and impurity content of industrial cumene using gas chromatography. This standard is applicable to the determination of the purity and impurities of industrial cumene with a purity of not less than 99% (mass fraction).

Impurities mainly include non-aromatic hydrocarbons, benzene, toluene, ethylbenzene, n-propylbenzene, tert-butylbenzene, ��-methylstyrene, sec-butylbenzene, diisopropylbenzene, and phenol, etc.

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Document preview — SH/T 1745-2025

National Standard of the People's Republic of China

ICS: 71.080.15
Classification: G 17
Replacing: SH/T 1745-2004

Issued by: Ministry of Industry and Information Technology

What this standard covers1
Document data2

What this standard covers

This standard specifies a method for determining the purity and impurity content of industrial cumene using gas chromatography. This standard is applicable to the determination of the purity and impurities of industrial cumene with a purity of not less than 99% (mass fraction). Impurities mainly include non-aromatic hydrocarbons, benzene, toluene, ethylbenzene, n-propylbenzene, tert-butylbenzene, ��-methylstyrene, sec-butylbenzene, diisopropylbenzene, and phenol, etc. The detection limit for phenol impurities is 0.0002% (mass fraction), and the detection limit for other impurities is 0.0005% (mass fraction).

Document data

International classification (ICS): 71.080.15.

Chinese classification (CCS): G17.

Supersedes the earlier edition SH/T 1745-2004.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — all pages — is available in the English PDF.

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