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SN/T 3794-2014Determination of colourity of purified terephthalic acid for industrial use - Spectrophtometric method (English PDF)

工业用精对苯二甲酸色度的测定分光光度法

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Issued by

General Administration of Customs

Level / Type

National · Recommended

Issue date

January 13, 2014

Implementation date

August 1, 2014

Scope

SN/T 3794-2014 is the English-translated version of 工业用精对苯二甲酸色度的测定分光光度法.

SN/T 3794-2014 is the Chinese standard "Determination of colourity of purified terephthalic acid for industrial use - Spectrophtometric method". This standard specifies the spectrophotometric method for industrial use PTA chromaticity.

This standard applies to industrial purified terephthalic acid (5 g/100 mL N, N- dimethyl formamide solution) measured chromaticity. It was issued by General Administration of Customs. Issued on 2014-01-13, in force from 2014-08-01. It cites 2 other standards.

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Document preview — SN/T 3794-2014

National Standard of the People's Republic of China

ICS: 71.080
Classification: G15

Issued by: General Administration of Customs

[Preview only]
1 Scope
2 Normative references
2.1 Cereals and oils
2.2 Feed; feedstuffs
2.3 Packing
3 Terms and definitions
3.1 Consignment
3.2 Lot
3.3 Sampling
3.4 Reducing sample; preparation of test sample
3.5 Sample
4 Reagents and Materials
4.1 Sampling tools
5 Devices
5.1 Reagents
6 Sample Preparation
7 Test
8 Result Calculation
9 Test report

1 Foreword

SN/T 3794-2014 was issued by General Administration of Customs on 13 January 2014 and has been in force since 1 August 2014.

The SN/T prefix marks a recommended standard. It is not law in itself: it becomes binding when a contract names it, when a regulation or a mandatory standard refers to it, or when a producer declares conformity with it.

The document runs to 8 pages in English translation.

2 Scope Preview

This standard specifies the spectrophotometric method for industrial use PTA chromaticity. This standard applies to industrial purified terephthalic acid (5 g/100 mL N, N- dimethyl formamide solution) measured chromaticity.

SN/T 3794-2014 falls under ICS 71.080, in the field of chemical technology.

This catalogue holds 251 other SN/T standards in that field.

In this catalogue, SN/T standards carry edition years from 1991 to 2026.

3 Normative references

The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document.

GB/T 3143-1982 — Color determination method of liquid chemicals (Hazen unit - Platinum-cobalt scale)

GB/T 8170

4 About this standard

Issued by: General Administration of Customs

English translation: about 8 pages (approximate)

5 Related standards

Standards on related subjects:

GB/T 6041-2020 — General rules for mass spectrometric analysis

SH/T 1499.8-1997 — Pure adipic acid. Determination of content of oxidixable compounds. Titrimetric method

SH/T 1499.9-1997 — Pure adipic acid. Measurement of melt colour (in Pt - Co scale)

SN/T 5566-2023 — General Rules of Laser Micro Raman Spectroscopy Analysis Method

SN/T 5298-2021 — Imported crude glycerin inspection procedures

SN/T 3804-2014 — Determination of the tri-ethylene glycol, di-ethylene glycol and water in the tri-ethylene glycol for import and export

6 Classification and status

International classification (ICS): 71.080

Chinese Standard Classification (CCS): G 15

Prefix SN/T: recommended standard.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 8 pages — is available in the English PDF.

Referenced standards

Normative references

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