ASTM D2360-11 rus PDF

Full title and description

St ASTM D2360-11 rus — "Standard Test Method for Trace Impurities in Monocyclic Aromatic Hydrocarbons by Gas Chromatography" (Russian-language edition/translation of ASTM D2360-11). This document describes a gas-chromatographic procedure for determining trace nonaromatic and monocyclic aromatic hydrocarbon impurities in toluene and mixed xylenes and includes recommended instrumental parameters and detection limits for routine purity and quality control analyses.

Abstract

This standard specifies a gas chromatography method for the detection and quantification of typical impurities present in monocyclic aromatic hydrocarbons used as solvents or chemical intermediates (for example, toluene and mixed xylenes). It provides an instrumental configuration (column, detector, temperatures, carrier gas, split ratio, sample size and analysis time) and describes applicable concentration ranges and reporting/rounding conventions. Note: ASTM D2360-11 was withdrawn in 2016 and later replaced by ASTM D7504; this Russian translation/edition reproduces the 2011 test method.

General information

• Status: Withdrawn (withdrawn November 2016; replaced by ASTM D7504).
• Publication date: 2011 (designation: ASTM D2360-11; published January 6, 2011 in the ASTM record).
• Publisher: ASTM International (American Society for Testing and Materials).
• ICS / categories: 71.080.15 — Aromatic hydrocarbons; analytical chemistry / gas chromatography.
• Edition / version: ASTM D2360-11 (2011) — Russian language edition / translation available as a reproduced PDF.
• Number of pages: Approximately 6 pages (typical short test-method format).

Scope

This test method covers determination of total nonaromatic (aliphatic) hydrocarbons (C1–C10) and trace monocyclic aromatic hydrocarbons (C6–C9) in toluene and mixed xylenes by gas chromatography. It is intended for use in setting specifications and internal quality control where these aromatic products are produced or used. The method reports detection/quantitation ranges for aliphatics (about 0.001% to 2.500% by weight) and for individual monocyclic aromatics (about 0.001% to 1.000% by weight), and notes limitations such as potential inability to resolve small amounts of benzene from nonaromatics in mixed xylenes. Results are to be rounded according to Practice E29.

Key topics and requirements

• Applicable analytes: nonaromatic aliphatic hydrocarbons (C1–C10) and monocyclic aromatics (benzene through C9 aromatics) in toluene and mixed xylenes.
• Typical instrumental setup: flame ionization detector (FID); fused-silica capillary column with polyethylene glycol stationary phase; recommended column dimensions ~60 m × 0.32 mm ID, film thickness ≈ 0.25 µm.
• Suggested temperatures and program: injector ≈ 270 °C, detector ≈ 300 °C; oven program example beginning at 60 °C with ramp to 150 °C (rates and hold times provided).
• Operational parameters: helium carrier gas (typical flow ~1.0 mL/min), split injection (example 100:1), sample size ~1 µL, analysis time ~38 minutes (instrumental parameters in a typical Table 1).
• Performance and detection ranges: method sensitivity suitable for reporting impurities down to ~0.001% by weight for many components; useful for setting purity specifications but cannot guarantee absolute purity if unknown/unresolved components are present.
• Limitations and safety: the standard reminds users to consider safety and regulatory limits and to apply appropriate laboratory safety practices; some matrix interferences (e.g., benzene overlap) may affect certain determinations.

Typical use and users

Used by analytical laboratories in petrochemical and chemical manufacturing, QA/QC groups at producers and distributors of toluene and mixed xylenes, regulatory testing labs, and any organization that must verify the trace-impurity profile or report commodity-grade aromatic hydrocarbon purity for specification compliance. Instrument manufacturers and chromatography software vendors reference this method for method files and supported parameter sets.

Related standards

Key related and successor standards include ASTM D7504 (Trace Impurities in Monocyclic Aromatic Hydrocarbons by Gas Chromatography and Effective Carbon Number — replacement for D2360), and other aromatics-analysis methods such as D5917, D3797, D4492, and D6563 which address purity and composition of specific aromatic streams (o-xylene, p-xylene, benzene, C8 distribution, etc.). A related ASTM research report (RR:D16-1020) provides interlaboratory precision data for D2360 and D5917.

Keywords

ASTM D2360-11, monocyclic aromatics, toluene, mixed xylenes, trace impurities, gas chromatography (GC), flame ionization detector (FID), purity analysis, quality control, D7504 (replacement).

FAQ

Q: What is this standard?

A: ASTM D2360-11 is a test method that describes a gas-chromatographic procedure for determining trace nonaromatic and monocyclic aromatic hydrocarbon impurities in toluene and mixed xylenes; the item here is a Russian-language edition/translation of that 2011 method.

Q: What does it cover?

A: It covers detection and quantification of aliphatic impurities (C1–C10) and monocyclic aromatics (C6–C9) in toluene and mixed xylenes, including recommended GC parameters, detector type, sample injection practice, analysis time, and concentration ranges for reliable detection.

Q: Who typically uses it?

A: Petrochemical and solvent producers, contract analytical laboratories, QA/QC teams, and chromatography instrument/software providers use the method for specification testing and internal quality control.

Q: Is it current or superseded?

A: ASTM D2360-11 was withdrawn in November 2016 and superseded by ASTM D7504. Users are advised to consult D7504 for the current, preferred test method while D2360-11 may still be referenced for historical or comparative purposes.

Q: Is it part of a series?

A: It belongs to the suite of ASTM methods for analysis of aromatic hydrocarbons and is associated with other D16 Committee methods (for example D3797, D4492, D5917, D6563, and D7504) that address specific aromatic product analyses and C8 distribution determinations.

Q: What are the key keywords?

A: Toluene, mixed xylenes, trace impurities, gas chromatography, flame ionization detector, aromatic hydrocarbons, purity, ASTM D2360-11, D7504.