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SN/T 3232-2012Inspection method of 2, 4-dichloro fluorobenzene for import and export (English PDF)

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Issued by

General Administration of Customs

Level / Type

National · Recommended

Issue date

October 23, 2012

Implementation date

May 1, 2013

Scope

SN/T 3232-2012 (Inspection method of 2, 4-dichloro fluorobenzene for import and export) is available as an English-translated PDF.

SN/T 3232-2012 - This standard specifies the determination of the import and export of 2,4-dichloro-fluorophenyl, moisture, density, refractive index and sampling, sample preparation methods.

This standard applies to the import and export of 2,4-dichloro-fluorophenyl test.

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Document preview — SN/T 3232-2012

National Standard of the People's Republic of China

Issued by: General Administration of Customs

Foreword
1 Scope
2 Normative references
3 Sampling and sample preparation
4 Determination
4.1 Determination of Moisture
4.2 Densitometry
4.3 Refractive index determination
4.4 Determination of the content of 2,4-dichloro-fluorophenyl

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules.

This standard is proposed and managed by the National Certification and Accreditation Administration Committee.

This standard was drafted. People's Republic of China Liaoning Province Exit Inspection and Quarantine.

1 Scope

This standard specifies the determination of the import and export of 2,4-dichloro-fluorophenyl, moisture, density, refractive index and sampling, sample preparation methods.

This standard applies to the import and export of 2,4-dichloro-fluorophenyl test.

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 260 Petroleum products - Determination of water content GB/T 4472 chemical product density, relative density measurement General GB/T 6488 chemicals refractive index determination method GB/T 6680 General rules for sampling liquid chemical products

3 Sampling and sample preparation

Performed according to GB/T 6680 regulations.

4 Determination

4.1 Determination of Moisture

Performed according to GB/T 260 requirements.

4.2 Densitometry

Performed according to GB/T 4472 regulations.

4.3 Refractive index determination

Performed according to GB/T 6488 regulations.

4.4 Determination of the content of 2,4-dichloro-fluorophenyl

4.4.1 Method summary

After the sample is diluted with a solvent to carbon disulfide by capillary column with a gas chromatograph equipped with a flame ionization detector, mining with external standard.

4.4.2 Reagents and materials

4.4.2.1 Carbon disulfide (HPLC grade).

4.4.2.2 2,4- dichloro-fluorophenyl standards. purity 99.5%.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 4 pages — is available in the English PDF.

Referenced standards

Normative references

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