GB/T 691-2012Chemical reagent - Aniline (English PDF)

1 Scope

This standard specifies the chemical reagents aniline traits, specifications, testing, packaging and inspection rules and signs.

This standard applies to chemical agents aniline test.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated edition applies to this article

Member. For undated references, the latest edition (including any amendments) applies to this document.

GB/T 606 Moisture chemical reagents common method Karl Fischer method

GB/T 618 Chemicals determination of crystallizing point - General method

Laboratory use specifications and test methods GB/T 6682 Analysis

GB/T 9722-2006 General chemical reagent gas chromatography

GB/T 9741-2008 chemical reagents common determination of residue on ignition method

GB 15258 rules for preparation of chemical safety labels

GB 15346 chemical reagent packaging and marking

HG/T3921 Chemicals sampling and acceptance rules

3 Characters

This reagent is colorless or light yellow transparent oily liquid with special smell, exposed in air or exposed to light become darker in color. Soluble in ethanol,

Slightly soluble in water, a density of about 1.02g/mL.

4 Specification

Aniline as shown in Table 1.

Table 1 specifications of aniline

Name AR chemically pure

Content (C6H5NH2), w /% >=99.5 >=99.0

Crystallization point/°C -6.0 ~ -6.5 -5.0 ~ -6.5

Residue on ignition (Sulfate), w /% <=0.002 <=0.005

Nitrobenzene, w /% <=0.003 -

Water (H2O), w /% <=0.2 - […]