GB/T 21886-20082,4-Dinitrophenol (English PDF)

1 Scope

This standard specifies requirements for 2,4-dinitrophenol, sampling, test methods, inspection rules, marking, labeling, packaging, transportation and storage in order to

And safety, safety data sheet.

This standard applies to product quality control 2,4-dinitrophenol, which is mainly used for the production of picric acid and intermediate coatings.

Structure.

Molecular formula. C6H4N2O5

Molecular weight. 184.11 (according to 2005 international relative atomic mass)

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent

Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research

Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.

GB 190 packaging and marking of dangerous goods

GB/T 191 Packaging - Pictorial signs (GB/T 191-2008, ISO 780.1997, MOD)

Representation GB/T 1250-1989 and method of determining the limit values

General method for determination of GB/T 2385-2006 dye intermediates crystallization point

Determination of GB/T 2386-2006 dyes and dye intermediates moisture

GB/T 6678-2003 General Principles for Sampling Chemical Products

GB/T 6682 analytical laboratory use specifications and test methods (GB/T 6682-2008, ISO 3696. 1987, MOD)

GB/T 9722 General chemical reagent gas chromatography

GB 12268-2005 of dangerous goods

3 Requirements

2,4-dinitrophenol quality should meet the requirements in Table 1.

Table 1 2,4-dinitrophenol quality requirements

Item Index

1. Appearance yellow to dark yellow powder or granules

2.2,4- dinitrophenol purity /% >= 97.0

3. Low boiling content /% <= 0.5

4.2,6- dinitrophenol content /% <= 2.5

5. Dry goods crystallization point/°C >= 108.0

6. Heating loss mass fraction /% >= 10.0 ~ 16.0

7. Aqueous solution pH of 4.0 to 5.0

GB/T 21892-2015 | GB/T 15336-2013 | GB/T 25787-2010 | GB/T 21896-2019 | GB/T 21895-2015 | […]